Good job! I assume you have monitored the min and the max voltages and amps on the old Nimh cells. What were they? Min and Max voltages and max amps? Thanks
12.9 under load. 14.4 once load stopped 18.3 max under regen but settled to 16.8 once regen had stopped. Max amps seems to be 100 at the very extreme and 50 common. The highs and lows of the new setup aren't as drastic and after every test it always goes back to the original 16.5 (3.3 x 5). In fact the voltage show during the video 231 is exactly 3.3 x 70. I find it very odd to be so exact of the initial install voltages.
@@elektrikli4479 highs and lows of previous block old chemistry for the reply. I have other projects that are demanding my time but will install my own amp meter to verify the amp surges
@@elektrikli4479 Each pair, which is how the OEM HV Battery ECU reads them. All feedback wires are down one side of the pack, tapping every second module, so reads in pairs. The nominal voltage of a static (single, isolated module) is 7.2VDC, in reality it's 6x1.2 VDC unitized into one module, thing 6 D Cell's in series. 28 modules in pairs shows up as 14 modules when viewed thru Techstream or other OBD software. The OEM setup has no balance function/capability. It seems any deviation from OEM to Lion chem for example requires a balance function. I've been involved professionally with Toyota Hybrids for near 15 years now, own three personally and very interested in alternatives to the OEM packs, having already purchased one new for $2450 AUD. The two older cars we have don't really warrant that outlay having a lot of kms. Some add on systems simply supply a voltage to the OEM pack for increased efficiency and of course less taxing on the OEM pack long term with varying success.
This is brilliant! And ballsie... ;) For no good reason I worried that the Prius controls wouldn't play nice w/o considerably more modification. This is awesome! Thanks!
This is really cool. Dr.Prius has been working on a replacement LifePo4 battery for the Prius for years now. I am finally able to see this concept in action. Thanks. Looking forward to part 3.
The monitoring on the disconnect is just a "jumper" / "bridge" as far as i know.. It´s part of the safety interlock system. The main relay wouldn´t activate if the microswitch is detected as open.. If you look at the removed disconnect plug, the small interlocking leaver has contacts which essentially bridge these wires, once the interlocking leaver is pressed down.. As soon as you pull the leaver up, they are "open" and the controller would know, that the disconnect plug is not locked.. I guess this is to prevent someone from pulling the disconnect plug while the main relay is closed.. As this could potentially generate big arcs, if you disconnect your pack while ~125 amps are flowing through the plug.
Would be willing to give us some more details on the results? Like when does the engine kick on vs just battery? What is your regular mileage like vs a new NiMH? and other details like that.
Sorry I'm 5 projects behind. So it was really bad with the old battery but in all fairness it lasted a long time. Played around with it at 2:00 a.m. when no one else would be on the road and got a few miles out of it before approaching my house and then it seems like it kicked in without me forcing it with the pedal. I have no idea what regular mileage is for a Toyota with a new nimh. I went from 32 back up to 40-42. Meanwhile I have a carport too build, 5 ACS to install in the Attic, a semi to repair, and the underbelly of my insulated box truck to do but as winter approaches that one will probably get kicked to the curb for now. I've purchased a new tools that I can't even share on CZcams without killing my sleep and I am currently going to school and running two businesses... Fun lol
This is a really cool video explaining lots of details. However, I'm trying to get my head around how all the numbers fit into the big picture - from what I can see in the video, you used 32650 Lifepo4 Batteries, which are typically 6Ah and 1C/3C continues charge/discharge (the best examples I've seen were rated to 5C discharge), so 2P70S would give us 12A charge and 36A discharge. I know that you can actually push them to 6C charge / 30C discharge, but when it happens, the batteries heat up a lot and the capacity degrades dramatically. Logging the current from the original toyota battery, I saw peaks as high as 160ish amps (lexus rx400h, the same thing actually as the Prius' battery, just the configuration is 8s, when the Prius' cell is 6s) during braking. I'm curious how the battery capacity is doing after 10k miles, 20k miles?
I didn't have any issues with the deceleration but feel like it tried to use dual electric gas on long trips which should have been gas only after batteries were charged. I had people come to my house for the first time in my life and offer me money for that specific vehicle which I sold and bought a much larger vehicle. I had been driving it from central Florida to south Florida several times a week
Hello! very cool video you have about the battery! I also have a Prius 20 and have always been interested in alternative batteries. How much can they ride in EV mode? I'm looking forward to the new video!
Crazy life. I went to school during the pandemic, got out and my business double so had to jump on that. I bought a truck for OTR trucking and don't have time to use it. We shut down for 3 months was a bit scary. I have a crazy amount of backlogged work that needs to be done... My slave driver... excuse me I meant my wife makes sure I have no free time too but she's going to go visit family for a month so I'm hoping to get back to posting. I took one vehicle from 16mpg to 28mpg recently, and made my refrigerated truck solar powered since then and no videos sigh. I have more learning to do on another side business but it's going to cut into my sleep schedule
@@eby6114 Holy crap! Our wives must be sisters. lol Got my hip replaced 2 weeks ago, so she hid my walker & pain meds 4 days later. Two days after that she stole my cane. And just why dod "Wife Number Last" treat me so harshly? We raise specialty livestock and she had to deliver ONE of the hell trips that I usually do, so no desire to ever do another. That and she & her sister decided they wanted a pool, and that I was going to build it. All I can say is, don't ever try to retire! Just accept your fate and work like a dog till you die. They're all sisters, and I'm certain it's in their DNA - the killing husbands thing... lol
@@perniciousprogressive8333 That's just insane. Yeah I'm still trying to learn a second business so I can try to keep my wife from opening a restaurant,grocery store or a beverage shop like Thai tea or something all of which mean you no longer have any type of life. I'd honestly put a bed in a restaurant or grocery store knowing full well the hours it would take to get it going. which I'd have to manage and she hates paying to have things done so that leaves yours truly. Sounds like we need to sit down and have a beer together lol we could probably tell stories for a a good long while.
Hi, this batteries are rated 3C , 6000mAh and 2 paralel they will give you ~40A discharge is this enought ? I'm planing to do this conversion soon. but I was thinking to use 5s1p do you think 20-30A would be enought for discharge ? Aslo would be nice to have 3d printed housing for them, when I'll do the conversion will try to designe something.
Now that you had some time testing, was your separate BMS additional wiring not needed? Just curious. Thank you so much for your videos. And the time you taken to do.
I never did use the BMS and the initial variant was .1 volt per block and ended up with just a .2 volt difference but that would level out back to .1 when the car was at a stop and engine not running
Nice work . Thanks, the cells you use are posible more expensive now a days, but a matter of getting a good deal. You had a good price back when you did it. Thank you
For context, my Dr. Prius/Project Lithium Gen2 battery was over $2,400 w/ shipping, so even w/ your cell selection being more costly now, still a bargain by comparison. Well done, and thank you very much for taking the time to record and explain your build! Huge motivator! :)
Btw, do you know what the max high voltage the Toyota bms will accept? Couldn’t you run 15-16 groups, to increase voltage and reduce the need for 2P? Also, bus bars would probably reduce the heat.
You'll have to do a bit of research and make sure the Ford doesnt have it own BMS and monitoring system. They can be on the same computer. I did hook up my BMs as the voltages stayed within.2 volts per cell and started out at .1 per cell. That's pretty close
Thinking about pulling the trigger on this but actually use the plastic holding brackets. Have you had any issues with yours so far? Have you ever seen it reaches 60mpg or more? Very informative video by the way. Cheers!
Zero issues but it seems that on the highway all the electric is moderated by the battery instead of bypassing and going to the wheels. I've never seen 60 mpg except in the keys where the speed is restricted
@@eby6114 Thank you for your response. I've too noticed ICE kicks on on the highway if the battery drains below 40% to 30% ish. Does it mean that with the 3P configuration, it would stay on Electric Only Mode a lot longer on highway and in most cases? I'm also thinking about adding electric mode only wiring kit and an additional battery pack (plug in) with its own BMS in the future. Thanks for sharing!
@@CasualnRandom I had a relay not disengage on the highway one time. It disconnected the hybrid battery and cause the i.c.e. to race so I started thinking that the electric goes through the batteries before helping at the drive wheels. This is a safer way to do things but causes undo stress on the batteries by running all those amps through them. This observation I've made during long interstate driving situations. It would seem that the motor produces some power for the drive wheels direct and some for the hybrid electric wheels but goes thru the battery first. One more thing. In the United States we are missing electric only mode but in other countries they have a button they can push to used only the hybrid battery. The computer is the same however and there's two pins one need to engage to enable this mode.
My wife had bought a new Prius C in 2013, but we were a bit deceived by the small capacity of the NMH battery. After 5 years we were finding it a bit slow for our needs and shifted back to a CH-R which has a small 1.2L engine with a small turbo. Toyota could have done a better job with the HV battery!
Hi, thanks for sharing your video and experiences. I want to know if you have a separate bms for each module ? Or a balancer ? As you have 5s batteries. What keeps these batteries balanced ? And if one of five failed what would happen ?
I bought and wired 2 large balancers. I didn't install them but had them for backup there was never more than a .1 volt variants according to the Toyota BMS. This is according to group. Each section is isolated so a group could be removed and individually replaced. The chemical makeup is lithium iron phosphate so no worries for fires just an annoyance if anything has to be replaced
@@eby6114 I have purchased yesterday a prius Gen 2 with a degraded battery, and planning to do the same set-up as you did, I already have brand new 33140 lifepo4 batteries rated at 15 amp capacity with 5c discharge, I will probably go with 1p 5s setup. I was thinking of buying individual balancers for each of the 5s. I should end up with a battery that is around 3.3kw capacity. The car I purchased has the Ev button. So I was hoping to get a good range on battery only driving ( not sure of how much milage I would expect from this) . And also planning to add some wiring ready for expanding the capacity by adding an extra battery pack in the spare wheel space lateron with an external charger to become like a PHEV. What do you think of this setup ? And do you have any hints of what to be avoided or done to enhance it ?
@@hamzahotait8392 sounds like a good plan. While the us versions don't have the EV button we can put a jumper on a couple of pins and enable the same thing. I wouldn't drive it over 50 kph so just city. You'll probably only get 7 miles or less on your 3kw pack. Average 3 miles per kw. Lol I'd say 20kw would be a nice 50 mph but it'd make a really nice house battery... maybe both
32650 Lifepo4 6000 ma If you don't mind I'll release the manufacturer after I've test them for around 20,000 mi. I'd hate to give you guys a bad recommendation on the batteries. I will tell you however I bought them on the Alibaba. Hope you understand Thanks
@@daurenkulsarin1360 Trying to find the time for a video. I have a semi with a whole page of things needing replaced mechanic wise. Driving me nuts right now. I also wanted to put 20kw worth of batteries in it but it's not "essential" so every dot related items come first then the others
Hi my name is Diki from Indonesia, southeast asia. Thanks for sharing the videos, Im thinking to replace my Camry hybrid XV50 HV with this lifepo4 too, plan to install 3P5S to replace each block, and it is 17 blocks on Camry, total 255 cells of 32700 (or 32650) batteries. Thinking to install 96S BMS of lifepo4 (will use 85S only) and five 17S active balancer 5A to keep it balance and optimal performa. I have a few question for you before I buy all those things: 1. Do you think it will fit in dimension if I use 3P5S configuration to subtitute each module? 2. Do I need other BMS as protection for over charge? ( especialy for regen on down hill ) 3. You said the HV relay will keep batteries safe when it over charged, or over current, or over temp. Can you tell me what voltage ( over charged ) will it release/disconnect? Because when I went down hill at high speed and did some regen brake, it doesnt release even if batteries indicator shown full bar (and red color icon on hybrid assistant apps) Im affraid it will spoil lifepo4 batteries. Looking for your feedback tobe discuss. Thanks
It really depends on the active BMs of the car you working on. Before swapping I measured everything from total high and low of the system. I also noticed when the nicads were getting old they had heat issues and I would watch for the disconnect from the system. Your vehicle should have relays but you'll have to do a bit of digging to find out the correct specifications. I never had to balance my new batteries even after 10,000 miles. As far as fitting I'd measure both battery and case then Give yourself a bit of extra room. The lithium fit better than the old batteries but I almost went with a 3s configuration and would have added some spacers to adjust for clearance
@@eby6114 talking about BMS on the car, I think it is standar toyota for protect NiMH batteries. Now Im measuring the hi/lo voltage and ampere with exsiting battery on many road condition climb and or regen downhill. And yes for the old battery NiMH (mine not NiCad) has heat issue so I need to override fan to cooling it down (in my country day temp about 34°C). Btw Im using Hybrid Assistant apps to monitor it, it has a lot of feature and auto detect for my Camry compare using Torque apps, you should try this and it is free apps. Does the new battery has an issue with temp after 10k miles? Or some degrade performace of capacity without using external balancer? Thanks
@@eby6114 . i been beating this idea around for a civic for some time. batterys are simple. the discharge rates are simple. but the heavy charge under breaking had me stumped. i been playing with solar for quite some time. lead acid and nimh seem to take a much heavier charging rate than lipo. was really worried over weather the batterys would take it. i would have to run a 55s 2p at 1c that would only take a 12 amp charge. im figuring thats probably fine for everything except the breaking. really like what you done. keep us informed
@@andrewwoodham5497 I bought a coulomb meter to find out the average amps of the battery. It's has some interesting results. I'll post that video up once I take another long trip. Last trip I had the negative relay getting stuck so it's time to replace it. It'll try to post a video about that too. I have so many fun projects like building my own walk-in fridge lol but not a lot of time to make the videos being pressed for time
@@eby6114 lol . i understand lack of time. i live bin alabama and ist not friendly to solar or electric vehicles. i installed a solar system 2 years ago, then had a huge falling out with the power company. so ii took the solar off grid. cost me a bit. but i got power when no one else does this way. keep us informed on how its working. i almost bought batterys last week. but everyone i talk to keeps swearing it wont work. your bmaking a liar out of them
It went really well I've been able to make the third video about it the problem is I have three different businesses. One that I've been aiming to eliminate. There really isn't much time to do anything other than work right now.
@Lil Asian Grocery LLC which battery's you use? How many ah? And do you know which pick of discharge and charge need in battery specification? Can you help me?
Good job! I assume you have monitored the min and the max voltages and amps on the old Nimh cells. What were they?
Min and Max voltages and max amps?
Thanks
12.9 under load. 14.4 once load stopped 18.3 max under regen but settled to 16.8 once regen had stopped. Max amps seems to be 100 at the very extreme and 50 common.
The highs and lows of the new setup aren't as drastic and after every test it always goes back to the original 16.5 (3.3 x 5). In fact the voltage show during the video 231 is exactly 3.3 x 70. I find it very odd to be so exact of the initial install voltages.
@@eby6114 12.9 and 14.4 are for each module out of 14 modules, right?
@@elektrikli4479 highs and lows of previous block old chemistry for the reply. I have other projects that are demanding my time but will install my own amp meter to verify the amp surges
@@elektrikli4479 Each pair, which is how the OEM HV Battery ECU reads them. All feedback wires are down one side of the pack, tapping every second module, so reads in pairs. The nominal voltage of a static (single, isolated module) is 7.2VDC, in reality it's 6x1.2 VDC unitized into one module, thing 6 D Cell's in series. 28 modules in pairs shows up as 14 modules when viewed thru Techstream or other OBD software. The OEM setup has no balance function/capability. It seems any deviation from OEM to Lion chem for example requires a balance function. I've been involved professionally with Toyota Hybrids for near 15 years now, own three personally and very interested in alternatives to the OEM packs, having already purchased one new for $2450 AUD. The two older cars we have don't really warrant that outlay having a lot of kms. Some add on systems simply supply a voltage to the OEM pack for increased efficiency and of course less taxing on the OEM pack long term with varying success.
This is brilliant! And ballsie... ;)
For no good reason I worried that the Prius controls wouldn't play nice w/o considerably more modification. This is awesome! Thanks!
Super nice system. Logically designed and efficient, can't wait to hear your long term results. Thanks for sharing your knowledge.
This is really cool. Dr.Prius has been working on a replacement LifePo4 battery for the Prius for years now. I am finally able to see this concept in action. Thanks. Looking forward to part 3.
great project good idea, i believe the 3p 70s may fit, looking forward to part 3, or any news about the life and performance of your design
Very nice work
Nice video you have here, thank a lot. I'm consider to convert mine too!! waiting for part3 still
Thank you ❤️
I really think that you need the bms
Hi, really waiting for part 3 :)
Where is the 3rd part bro? Waitin
The monitoring on the disconnect is just a "jumper" / "bridge" as far as i know.. It´s part of the safety interlock system. The main relay wouldn´t activate if the microswitch is detected as open..
If you look at the removed disconnect plug, the small interlocking leaver has contacts which essentially bridge these wires, once the interlocking leaver is pressed down.. As soon as you pull the leaver up, they are "open" and the controller would know, that the disconnect plug is not locked..
I guess this is to prevent someone from pulling the disconnect plug while the main relay is closed.. As this could potentially generate big arcs, if you disconnect your pack while ~125 amps are flowing through the plug.
Nice job but know that the current sensor will only allow less than 1.3kw to come in and out of the battery unless you bypass it.
Ambitious project, did you have a rough wiring diagram you used? Our a template you would be willing to post?
Would be willing to give us some more details on the results? Like when does the engine kick on vs just battery? What is your regular mileage like vs a new NiMH? and other details like that.
Sorry I'm 5 projects behind. So it was really bad with the old battery but in all fairness it lasted a long time. Played around with it at 2:00 a.m. when no one else would be on the road and got a few miles out of it before approaching my house and then it seems like it kicked in without me forcing it with the pedal. I have no idea what regular mileage is for a Toyota with a new nimh. I went from 32 back up to 40-42.
Meanwhile I have a carport too build, 5 ACS to install in the Attic, a semi to repair, and the underbelly of my insulated box truck to do but as winter approaches that one will probably get kicked to the curb for now. I've purchased a new tools that I can't even share on CZcams without killing my sleep and I am currently going to school and running two businesses... Fun lol
This is a really cool video explaining lots of details. However, I'm trying to get my head around how all the numbers fit into the big picture - from what I can see in the video, you used 32650 Lifepo4 Batteries, which are typically 6Ah and 1C/3C continues charge/discharge (the best examples I've seen were rated to 5C discharge), so 2P70S would give us 12A charge and 36A discharge. I know that you can actually push them to 6C charge / 30C discharge, but when it happens, the batteries heat up a lot and the capacity degrades dramatically. Logging the current from the original toyota battery, I saw peaks as high as 160ish amps (lexus rx400h, the same thing actually as the Prius' battery, just the configuration is 8s, when the Prius' cell is 6s) during braking. I'm curious how the battery capacity is doing after 10k miles, 20k miles?
I didn't have any issues with the deceleration but feel like it tried to use dual electric gas on long trips which should have been gas only after batteries were charged. I had people come to my house for the first time in my life and offer me money for that specific vehicle which I sold and bought a much larger vehicle. I had been driving it from central Florida to south Florida several times a week
Hello! very cool video you have about the battery! I also have a Prius 20 and have always been interested in alternative batteries. How much can they ride in EV mode? I'm looking forward to the new video!
We don't have the ev mode option here in the States but I'm hoping to set it up myself and find out!
What are these cells?
Okay, ya got me hooked. So what happened to Pt.3 of 3? :)
Crazy life. I went to school during the pandemic, got out and my business double so had to jump on that. I bought a truck for OTR trucking and don't have time to use it. We shut down for 3 months was a bit scary. I have a crazy amount of backlogged work that needs to be done... My slave driver... excuse me I meant my wife makes sure I have no free time too but she's going to go visit family for a month so I'm hoping to get back to posting. I took one vehicle from 16mpg to 28mpg recently, and made my refrigerated truck solar powered since then and no videos sigh. I have more learning to do on another side business but it's going to cut into my sleep schedule
@@eby6114 Holy crap!
Our wives must be sisters. lol
Got my hip replaced 2 weeks ago, so she hid my walker & pain meds 4 days later. Two days after that she stole my cane. And just why dod "Wife Number Last" treat me so harshly? We raise specialty livestock and she had to deliver ONE of the hell trips that I usually do, so no desire to ever do another. That and she & her sister decided they wanted a pool, and that I was going to build it. All I can say is, don't ever try to retire! Just accept your fate and work like a dog till you die. They're all sisters, and I'm certain it's in their DNA - the killing husbands thing... lol
@@perniciousprogressive8333 That's just insane.
Yeah I'm still trying to learn a second business so I can try to keep my wife from opening a restaurant,grocery store or a beverage shop like Thai tea or something all of which mean you no longer have any type of life. I'd honestly put a bed in a restaurant or grocery store knowing full well the hours it would take to get it going.
which I'd have to manage and she hates paying to have things done so that leaves yours truly.
Sounds like we need to sit down and have a beer together lol we could probably tell stories for a a good long while.
@@eby6114 like I always say; they're all sisters! lol
Yeah, many beers. ;)
Can't find part 3. Please help
Где взять такие элементы?
Hi, this batteries are rated 3C , 6000mAh and 2 paralel they will give you ~40A discharge is this enought ? I'm planing to do this conversion soon. but I was thinking to use 5s1p do you think 20-30A would be enought for discharge ? Aslo would be nice to have 3d printed housing for them, when I'll do the conversion will try to designe something.
It seems to be. Occasionally I see spikes but less than a half second.
Now that you had some time testing, was your separate BMS additional wiring not needed? Just curious. Thank you so much for your videos. And the time you taken to do.
I never did use the BMS and the initial variant was .1 volt per block and ended up with just a .2 volt difference but that would level out back to .1 when the car was at a stop and engine not running
Nice work . Thanks, the cells you use are posible more expensive now a days, but a matter of getting a good deal. You had a good price back when you did it. Thank you
For context, my Dr. Prius/Project Lithium Gen2 battery was over $2,400 w/ shipping, so even w/ your cell selection being more costly now, still a bargain by comparison. Well done, and thank you very much for taking the time to record and explain your build! Huge motivator! :)
Electrical is not my forte, so I’ll probably never do this to my Camry. But it’s interesting nonetheless
Btw, do you know what the max high voltage the Toyota bms will accept?
Couldn’t you run 15-16 groups, to increase voltage and reduce the need for 2P? Also, bus bars would probably reduce the heat.
Hi
Pleas advice what is the bms using,
Can we upgrade prius nimh hybrid battery to lithum from ford fusion?
You'll have to do a bit of research and make sure the Ford doesnt have it own BMS and monitoring system. They can be on the same computer. I did hook up my BMs as the voltages stayed within.2 volts per cell and started out at .1 per cell. That's pretty close
@@eby6114 thank you
Thinking about pulling the trigger on this but actually use the plastic holding brackets. Have you had any issues with yours so far? Have you ever seen it reaches 60mpg or more? Very informative video by the way. Cheers!
Zero issues but it seems that on the highway all the electric is moderated by the battery instead of bypassing and going to the wheels. I've never seen 60 mpg except in the keys where the speed is restricted
@@eby6114 Thank you for your response. I've too noticed ICE kicks on on the highway if the battery drains below 40% to 30% ish. Does it mean that with the 3P configuration, it would stay on Electric Only Mode a lot longer on highway and in most cases? I'm also thinking about adding electric mode only wiring kit and an additional battery pack (plug in) with its own BMS in the future. Thanks for sharing!
@@CasualnRandom I had a relay not disengage on the highway one time. It disconnected the hybrid battery and cause the i.c.e. to race so I started thinking that the electric goes through the batteries before helping at the drive wheels. This is a safer way to do things but causes undo stress on the batteries by running all those amps through them. This observation I've made during long interstate driving situations. It would seem that the motor produces some power for the drive wheels direct and some for the hybrid electric wheels but goes thru the battery first.
One more thing. In the United States we are missing electric only mode but in other countries they have a button they can push to used only the hybrid battery. The computer is the same however and there's two pins one need to engage to enable this mode.
My wife had bought a new Prius C in 2013, but we were a bit deceived by the small capacity of the NMH battery. After 5 years we were finding it a bit slow for our needs and shifted back to a CH-R which has a small 1.2L engine with a small turbo. Toyota could have done a better job with the HV battery!
Indeed. 1.2 is smaller than the Prius 1.5
Hows the mileage
@@eby6114 13.2L/100Km on average for the CH-R
Trying to build a 5s2p using headway cells from Battery Hookup. Where did you get your BMS?
AliExpress
@@eby6114 sir did u connect the BMS ?
@@eby6114 and kindly update the packs health now?... I have been following u for a long time and waiting this update
@@eby6114 been searching I can't find a 70 or 140 cell BMS do you have a direct link for what you ordered?
I'm thinking of the same idea with headways did you make yours yet?
Hi, thanks for sharing your video and experiences.
I want to know if you have a separate bms for each module ? Or a balancer ? As you have 5s batteries. What keeps these batteries balanced ? And if one of five failed what would happen ?
I bought and wired 2 large balancers. I didn't install them but had them for backup there was never more than a .1 volt variants according to the Toyota BMS. This is according to group. Each section is isolated so a group could be removed and individually replaced. The chemical makeup is lithium iron phosphate so no worries for fires just an annoyance if anything has to be replaced
@@eby6114 I have purchased yesterday a prius Gen 2 with a degraded battery, and planning to do the same set-up as you did, I already have brand new 33140 lifepo4 batteries rated at 15 amp capacity with 5c discharge, I will probably go with 1p 5s setup. I was thinking of buying individual balancers for each of the 5s. I should end up with a battery that is around 3.3kw capacity.
The car I purchased has the Ev button. So I was hoping to get a good range on battery only driving ( not sure of how much milage I would expect from this) . And also planning to add some wiring ready for expanding the capacity by adding an extra battery pack in the spare wheel space lateron with an external charger to become like a PHEV.
What do you think of this setup ? And do you have any hints of what to be avoided or done to enhance it ?
@@hamzahotait8392 sounds like a good plan. While the us versions don't have the EV button we can put a jumper on a couple of pins and enable the same thing. I wouldn't drive it over 50 kph so just city. You'll probably only get 7 miles or less on your 3kw pack. Average 3 miles per kw.
Lol I'd say 20kw would be a nice 50 mph but it'd make a really nice house battery... maybe both
@@eby6114 is there any reason why not to drive over 50kph ? Most roads here in Australia are 60kph , this is what I'm planning to use it on.
@@hamzahotait8392 if we're still talking about a 3 kilowatt battery pack using it up and 7 minutes isn't ideal
Can you tell us what cells you are using and where did you get them?
32650 Lifepo4 6000 ma
If you don't mind I'll release the manufacturer after I've test them for around 20,000 mi. I'd hate to give you guys a bad recommendation on the batteries. I will tell you however I bought them on the Alibaba. Hope you understand Thanks
@@eby6114 any updates on batteries?
And also can you share about BMS model you used. Thank you 😊🙏
@@daurenkulsarin1360 Trying to find the time for a video. I have a semi with a whole page of things needing replaced mechanic wise. Driving me nuts right now. I also wanted to put 20kw worth of batteries in it but it's not "essential" so every dot related items come first then the others
Hi my name is Diki from Indonesia, southeast asia. Thanks for sharing the videos, Im thinking to replace my Camry hybrid XV50 HV with this lifepo4 too, plan to install 3P5S to replace each block, and it is 17 blocks on Camry, total 255 cells of 32700 (or 32650) batteries.
Thinking to install 96S BMS of lifepo4 (will use 85S only) and five 17S active balancer 5A to keep it balance and optimal performa.
I have a few question for you before I buy all those things:
1. Do you think it will fit in dimension if I use 3P5S configuration to subtitute each module?
2. Do I need other BMS as protection for over charge? ( especialy for regen on down hill )
3. You said the HV relay will keep batteries safe when it over charged, or over current, or over temp. Can you tell me what voltage ( over charged ) will it release/disconnect? Because when I went down hill at high speed and did some regen brake, it doesnt release even if batteries indicator shown full bar (and red color icon on hybrid assistant apps) Im affraid it will spoil lifepo4 batteries.
Looking for your feedback tobe discuss. Thanks
It really depends on the active BMs of the car you working on. Before swapping I measured everything from total high and low of the system. I also noticed when the nicads were getting old they had heat issues and I would watch for the disconnect from the system. Your vehicle should have relays but you'll have to do a bit of digging to find out the correct specifications. I never had to balance my new batteries even after 10,000 miles. As far as fitting I'd measure both battery and case then Give yourself a bit of extra room. The lithium fit better than the old batteries but I almost went with a 3s configuration and would have added some spacers to adjust for clearance
@@eby6114 talking about BMS on the car, I think it is standar toyota for protect NiMH batteries. Now Im measuring the hi/lo voltage and ampere with exsiting battery on many road condition climb and or regen downhill. And yes for the old battery NiMH (mine not NiCad) has heat issue so I need to override fan to cooling it down (in my country day temp about 34°C). Btw Im using Hybrid Assistant apps to monitor it, it has a lot of feature and auto detect for my Camry compare using Torque apps, you should try this and it is free apps.
Does the new battery has an issue with temp after 10k miles? Or some degrade performace of capacity without using external balancer?
Thanks
@@DH-yg9qg No issues with balancing. I stopped watching it and only check it once a month. I have a 0.1 voltage difference between packs
@@eby6114 Thats awesome, cant wait for the 3rd vid for conclusion, keep in touch ok
question? max charge rate of those batterys are probably 1C? how are you dealing with the excessive charge amperage of the regen braking.
Not having any issues. I've seen spikes of 60 to 100 amps
One thing to note. It's not 100 amps for 2 batteries. The load is shared between 140 cells
@@eby6114 . i been beating this idea around for a civic for some time. batterys are simple. the discharge rates are simple. but the heavy charge under breaking had me stumped. i been playing with solar for quite some time. lead acid and nimh seem to take a much heavier charging rate than lipo. was really worried over weather the batterys would take it. i would have to run a 55s 2p at 1c that would only take a 12 amp charge. im figuring thats probably fine for everything except the breaking. really like what you done. keep us informed
@@andrewwoodham5497 I bought a coulomb meter to find out the average amps of the battery. It's has some interesting results. I'll post that video up once I take another long trip. Last trip I had the negative relay getting stuck so it's time to replace it. It'll try to post a video about that too. I have so many fun projects like building my own walk-in fridge lol but not a lot of time to make the videos being pressed for time
@@eby6114 lol . i understand lack of time. i live bin alabama and ist not friendly to solar or electric vehicles. i installed a solar system 2 years ago, then had a huge falling out with the power company. so ii took the solar off grid. cost me a bit. but i got power when no one else does this way.
keep us informed on how its working. i almost bought batterys last week. but everyone i talk to keeps swearing it wont work. your bmaking a liar out of them
The amount of wires everywhere is a nightmare
how is it going for now?
It went really well I've been able to make the third video about it the problem is I have three different businesses. One that I've been aiming to eliminate. There really isn't much time to do anything other than work right now.
@Lil Asian Grocery LLC which battery's you use? How many ah? And do you know which pick of discharge and charge need in battery specification? Can you help me?
Wanna sell me one ?