Making a 500Wh eBike battery on the Cheap
Vložit
- čas přidán 26. 07. 2024
- 20cell packs jag35.com/collections/lithium...
Shrink Wrap - jag35.com/products/120mm-pvc-...
Xt30 parallel - amzn.to/31pWRTs
3x1xt30 custom cable - jag35.com/products/xt30-paral...
*Works great my **Latest.Bike** I have a bad knee so I still get exercise but the bike assists me. I am a big guy so I didn’t think it would go as fast but it works great.*
Thanks.
What a strange coincidence, I bought THREE of your batteries a few weeks ago.
For my E-bike project.
Its been over a year since i last watched one of your videos man, but they are Still so great!!
The battery pack have nice shape and it looks perfect with the blue wrap
I’ve been meaning to make a bike since the last video and I’m excited to try it
Need to add that to the scooters you sold and get some really great range. 😁
Hi, I am a highschool student and for a fun project I decided to build an electric pit bike, as well as building a custom battery to fit the spacing required. I custom built a 52v 28.8ah (14s12p) battery with samsung cells and before I put the bms (50a 14s Daly BMS) on, I tested the pack with a voltmeter and it read around 58.6 volts, which was perfect. However, when I soldered the bms wires on, and put on the connector, it read 14.5 volts. That was around a month ago, and now when I test it the voltmeter reads around 9.5 volts. I checked all of the bms wires and they were fine, so I don’t understand how I am getting that voltage. I saw online that sometimes a BMS can be “asleep” and that you can wake it up by charging, so I tried that and it didn’t even charge. I am now feeling very frustrated and defeated, because everything went so well until the BMS part. Everything in terms of the nickel strips and batteries is good, but it is just something with the BMS. I wasn’t able to get a very good solder on the main positive wire, so that could be the issue. This is all for an electric pit bike project that I’m doing, and I just feel very defeated now, which is why I’m seeking external help. Sorry for the very long email, but this is just the problem that I am facing. Do you know a possible fix or any way I can contact you for you to provide further help. Thanks in advance.
I just receive my xt30 cable thank you for correcting the mistake 🙏,thank you
Did it work for you? I have three in parallel on a 450w eBike and I'm still getting the overdraw issue from the BMS.
Thanks very interesting I could have great fun in your store
I tried this as well and still get the packs going into a safe mode from over amping a 500watt motor on a old razor dirtbike. These packs are from the scooter 5.2 a packs you sell. It’s all stock gearing. With a kiddo on it it does ok but with an adult it can go to safe mode.
Note that your 500W may draw more than 500w with more weight, going up hills, pretty much anytime using full throttle. My 750w mid drive can (and will) pull up to 1300w giving the right conditions. However if you keep pulling more than the motor is rated for an extended period for you can damage the motor or controller. ETA: Doing the math these would work with a 250W or 350W e-bike (like the kind Jehu has in that other video).
yeah 15A x 36v = 540w continous.
For a higher power ebike (72v 1-2kw), would it make more sense to make a big one of these (2s6p for 72v 30a), or get the imperfect 40cell packs (2s for 72v 25a)? I am fine soldering new connectors, though if the 40 cell packs bms doesn't work, I would have to buy a new bms and do more wiring.
You can print the pcb on paper and check de dimensions before sending to manufacturing. Cheap and quick. Just double check if the printing has the correct scale.
its more than just dimensions
Thanks Jehu for making those videos, they definitely helps the early beginners.
The fact that you. have to do those video because of the questions asked in your comments, and by your potential buyers, frightens me a little.
I don't want to be disrespectful, and I know you gotta start somewhere, but I have the impression, lot's of people try to bite way more than they can chew.
I mean, many questions asked, imply people ignoring high school level stuff.
Like what is implied by putting cells in series or parallel.
Ignoring ohm's law (it's really basic and simple).
Not understanding Ah or Wh, and the relation to the battery voltage.
Guys, please, it's not that hard, please get some education on those topics:
- Ohm's law
- What V, A, W, Wh, C means in realtion to each other
- What is implied by putting cells in series or parallel
Trust me, by knowing those basic stuff, you'll save yourself from buying something not fitted to your needs (and being frustrated). And more importantly, you'll vastly reduce the chance of getting hurt while handling those fiercy things.
Pretty sharp young man! What are the dimensions of the battery pack?
In order to get more than 5A from those packs you need an activator similar to the ES200 with the correct code.
I don't think so, the BMS is small 5A is all it can do
@@jehugarcia I was able to drain 8A. That was limited by my load. I need to find a bigger load to check the real limit.
@@jonathansperb Right. The cells are rated for 10A or so, right? And even scooters draw > 5A.
@@jehugarcia you're right, he's talking about a hack that over currents the BMS that can burn it out much sooner.
I'd take some for stereo Bluetooth projects
Is there a simple way to power some usb strip lights?
Any idea what the mile range is?
Im planning on getting a 1000w 48v hub motor for my bike so ive been doing a lot of research and came across your videos. Then I discovered I live 2 blocks from your shop and thought that was really awesome. Would something like this work for the 1000w 48v ebike?
wondering the same thing, what ever came out of your research?
Man I feel like you work all day every day
Always
I have 250w motor and controller waiting to get installed on my brompton. I was looking at jehu for a while and I was going to order these scooter batteries. now I'm confident that it will work! I purposely made the connection from the controller to xt60 male from the controller. now with 3 of these batteries parallel them I will have 500wh of fun. Jehu great video! I am local 626 here and work at 909,951. Can I come and buy some batteries from you directly? you are like 15 min from me.
Just combine three or more of the composite batteries to get decent range, I.e. 1500 watt-hours or more.
Hmmm…..A small lightweight pack would be a useful ‘get you home’ reserve….enough for say 7-8 miles if you went a bit too far on a day out!
I have ebike with 500 watt motor , how many batteries 🔋 will i need to build up ebike battery
Hey here from Chicago
I’ve been waiting for this video so how many ahs are those also how much can we get out of the bms together like that??
Cells are 2600mah x2 = 5.2ah per pack x 3 = 15.6Ah
very cheap cells, but that thing looks massive, might be hard to find a spot to mount it on most bikes, no?
Also, these come with a BMS right?
I need 48 or 52 volt for bafang bbshd
What is the best 21700 AliBaba cell price vs function? Would any of you trust the truck EV axil motors on AliBaba on your vehicle? Trying to convert a bus that will be able to travel on highway.
How you recharge that final battery? Thanks.
imo. in the context of Power, if amps (current) is minute, then, a thousand volts can't be used for much. a metric based on Current (over time) is a slightly less derivative one. cheers
Can you send battery packs up to Canada Saskatoon ?
I like what you are doing and would like to know how many of those packs you showed in this video would be needed to work on an E-bike with specs of 54.6vdc load around 11.4Ah? Also what type charger would I need?
You can't do 54v using multiples of 36v with just these packs.
@@ebikeengineer do you thinkone 36v battery pack would have enough power to run a 54.6v bike setup?
@@MaxGoddur Oh heck no, especially those 10S2P packs. Now a battery pusing 54v at full charge is a 48v motor (most of which can use 52v packs which charge up to 58v). If you have such a bike (as I do) then JAG35 has some 52v packs in right now (up to 20 amps). lt is possible to use 36v packs but you'd need to wire multiple together then use a step up or step down transformer (which is wasteful) depending on how you wired it.
@@ebikeengineer Thank you sir. My bad packs were 13s4p and tried to rebuild it but kept having problems with the BMS installed and ordered two. When they would fail ordering new BMS boards was my only option and they take forever to get here. So decided just to buy a couple of replacement packs. The manufacture/vendor stopped supporting the two I purchased and both packs went bad after a year.
When connect charger with battery frist switch on charges & off switch. Next connect battery between chargers light off u wiil get no spark.for your privius video.
Can you make a super pack linking them all together but not using the BMS it comes with and putting a third party one on?
yes
Buenas buenas tengo una patineta electrica qualibot s1 tengo ganas de darle más autonomía que me recomiendan??
how about charging do you use the single port, or you need to disconnect and charge each separately ?
You can charge them together
How would you charge these ?
Hello sir ! I hope all is well !
Alot of peaple have powerful ebike I use a bafang bbshd moter it's 1000 wats I need a 48 or 52 v
I have a question for you
a battery 72 v 65 ah
the battery gives 80 amp continuous
have a motor 6000w
what thickness of wire should i use?
I had a 40 amp fuse
but it broke when I was driving 60 km per hour
wanted to speed up
controller is also 80 amp up to 100 amp
which fuse can I or can I use
you are very well informed in your field
I would be grateful for your help
marlon
80a fuse if it pops try an 100a fuse
👍👍👍
you need to mod those bms to get all the juice. if data cable not connected Red Light appears at 7-10A max
It happens as low as 0.3amps for me. It’s frustrating cause I can’t keep it out of safe mode
I can draw form it but after 30secomds to 1 min it blinks red and shuts down output
Anyone know how to mod it?
@@AceHernandz shunt mod
#141 !! 👍🏻💪🏻
So sad that shipping to the eu isnt possible :(
What is the difference between bms asleep vs awake?
One is off and the other on
Can you series these packs? And if so how many?
Yes, I’ve only tested up to 3s
Hello sir I was wondering if u could refurbish old batteries or if u have the cells for bottle Ebike battery
No
Great video..
But what if those battery not has the same output voltage one day ?
Dont they destroy the battery with the lowest voltage ?🎉
Does the DC not feed back into the batteries and can Harm them ??
I dont Like lithium Explosion 😅..
Hope for a reply out there..!!
If you connect them in parallel they can not be at diferent voltage. Yes one battery can charge another battery if it’s lower voltage, it’s safe.
How do you charge them when they're sealed up in parallel? And with the BMS currently it takes forever to charge using the "normal" charge port since the charger cycles on and off for some reason.
you should be able to charge this in one hour, if you have 3 in parallel you will have to increase the charging power to get the one hour charge. if your charger keeps turning off then there's something bad in either your charger or your battery.
@@jehugarcia Thanks, but I see the charger cycling even in your video where you wake it up by charging through the normal charge port.
How can i buy this? I'm from cebu city Philippines
I just receive my box and it's missing the attaching cables,there's no number to call and no return,do you refund,can you send the cable at your expense since your team fup.
All my packs have separate charge and discharge, can I just parallel the charge lines?
yes
@@jehugarcia sweet, ty.
Can I also parallel chargers to get higher charge amp?
@@skepticfucker280 Yes. Usually, packs and battery cells can be charged at 1C. Meaning 5A if you have 5Ah battery, 15A for a 15Ah battery (it's a little bit more complicated than that, but more than enough to start).
@@xmtxx sweet, all my batteries have 2amp-4amp chargers. I don't mind spending the extra time charging up extra packs but am hoping if I parallel the chargers it will cut down on charge time.
I'm thinking 4 batteries that normally charge on 2amp each should be able to handle a couple chargers at once as long as the current is divided up.
Probably going to just add a couple extra charging ports so I can charge off one slowly if needed and if in a hurry I just plug in extra chargers.
:)
information. at 3:15, it is pretty-much impossible to meaningfully discuss any Single factor, such as power (watts, continuous), without Context. cheers
Do you ship to Nigeria and take Bitcoin?
No sorry usa only
5a or 10a. For children.
By ebike are we talking bicycle or motorbike?
what's the difference?
@@jehugarcia good point 😂
How can I buy direct from you?
Jag35.com
PLEASE ANSWER ME I’m working in a EV car 3,200 hundred pounds and I want to use those batteries, around 400 V and 400 amp… how many battery of those do I need??????
You need at least 10 of them to get up to 400v and you need at least 80 of them to get to 400A so 80x10 =800
If you are asking those type of question, you REALLY don't want to build a 3200 pound EV. You will get hurt, as in dead hurt.
400V, and handling tens of kWh is no jokes.
Please educate yourself before starting any project, and get yourself accustomed with a way smaller one, like an Ebike or an E-scooter.
@@xmtxx Thanks for the advice, I have already educated myself enough. I have everything already, the only thing I don’t have are the batteries because they are very expensive I am following the project of a friend who already has it running and working, but he spent a lot of money on batteries… I was waiting for the solid-state batteries they are better then the lithium batteries they are lighter and have more range…
im doin 56kmh on a dual m365 based on these batteries
have you seen this video "battery explosion test"? czcams.com/video/vS1J1AyFrjo/video.html
So my question is does your insurance company cover you if these batteries start a fire in your home?
900W? That's more than 1 horsepower.
Maybe 1,000 of those for an EV conversion
Totally possible
Dude, I got 2 batteries from you with $13 shipping in 2 boxes. I also got a charger for $10 shipping with the same order.
Both boxes weigh 6lbs.
You charge $10 to put something in a box that shipping is already paid for?!
So cool on the videos then rob us of our hard earned cash.
WTF?!
👎
it isn´t the first time, people complain about how expensive is the shipping, dunno if its because of the batterys.
Ya shipping is always high from there I always have a problem when people claim you can get this for this price when it's basically not true unless you love close enough to pick them up and shipping is not small generally on a lot of these things
@@james10739 shipping prices are inssane, its doesn´t matter if the product is cheap, if shipping will double the cost.
Everything is delayed thanks to Brandon.
Let’s go Brandon! #FJB
Hey a bunch of us who, like you, had our feelings hurt by Diamond Joe Biden will be marching on DC. Grab your cousin-wife, load up your PT Cruiser and meet us there.