Using & Testing Battery Hookup's Fused Nickel Strips - 1043
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- čas přidán 18. 02. 2021
- Continuing to build Li-ion batteries banks out of 18650 cells from old laptops. I am so tired of sording 140 tiny little fuses on each bank,, so been looking for a new way to put fuses on my banks,,,, So
company "Battery Hookup" has a product that should be really easy to work with,, we are testing that.
I am rather impressed with the tiny spot welder,, so I promised you links :-)
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It is slow blow fuse. It will blow at 8A or whatever it was rated for only if You draw that much for a prolonged time. It can take short bursts of much higher current.
Just like all circuit breakers an fuses.
I was hoping for less :-/
DUI= driving under influence
DIY= do it yourself
what else do you do down there when the camera isn't rolling :p
ROFL, most of my vids I'm drunk to cut out any anxiety.
I do a bit more DIY then DUI,, but well sometimes..
I like to tell people that DIY stands for "DIY it yourself" :)
Just bought that spot-welder via your link, that thing looks very nice. Ty for the recommendation!
Hi fuba44
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
Kapton tape. I would pronounce that as "cap" and "ton". With regards to fuses, some fuses are designed to temporarily take more amps. It would be interesting to gradually increase the current and let it sit for a while. It may be that the fuse blows after 20 seconds at 10amps. Have a great day!
Hi Bert Blankenstein
Thank You very much! AveRage Joe did a good video testing fuses just like that : czcams.com/video/BAPHF3Sq2t8/video.html
Thank you for watching! :-)
Its normal. Short current is higher when meassured like that. Every fuse takes 5-10* the current during very Short bursts :)
The thing is..... regardless how it's measured, it still needs that much energy to force the strip to melt.
It'd be interesting to see what the voltage was also at the time.
Yeah agree, what you mentioned about using a scope, is why I mentioned it would be great to know what the voltage was.....ie Vd across the fuse to see what the actual energy might be. That's what we do when we test Medium and High Voltage switchboards to destruction.
Allows us to quote actual data to customers when they purchase our gear. Having said that..... AC is quite different to DC in the same situation.
I was hoping for less,, I liked the 4A
@@MyPlayHouse the nickel strip is 7-8a rated If not mistaken. Lower current and glass fuses is your best bet. Lower current in open Air is Always difficult. I run 5-6a fuse wire in My wall myself. And they have somewhere around 15+ a when or IF you test like youbdo and ca 6a continues. Its about characteristics of the fuse :)
You should install a small tv up on the wall (or a tiny "media" pc to play movies or tv shows off your nas), down there in the basement.
It would make tedious projects like doing the fuse wire a bit more tolerable.
It could also be a new video idea. : )
That is not a terrible idea,,, :-)
You all prolly dont care at all but does someone know a trick to log back into an Instagram account?
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@Hugh Gianni Instablaster :)
@Gus Jimmy thanks for your reply. I found the site on google and im trying it out now.
Takes quite some time so I will reply here later with my results.
@Gus Jimmy It did the trick and I actually got access to my account again. I am so happy!
Thanks so much you saved my ass !
And you dont fuse total current on cell level you do that eith the Main fuse. Set that to 15a it you like. You dont want all those small fuses to blow. You want a single fuse to burn ;)
I do not agree !
If one 18650 get shorted from these 10P than the whole battery pack can go quickly out of balance if you draw high current from it (that's the why we use a BMS) and can be dangerous and therefore that one little 18650 have to get out of service as quickly as possible by blowing the fuse.
Such projects needs high safety features as this is mandatory.
@@GeertDroid And thats what you have cell level fuses for. Not to protect overall total current but on cell level. Thats also why you have a proper BMS that can give you insight in how much is balanced and why. If you look at my builds that have battery systems of well over 100kWh with 29 000 cells in it ;) Note i didnt say you should not have cell level fuses.
Hi DIY Tech & Repairs
Thank You very much! BMS is only 15A, and the breaker is 16A :-)
Thank you for watching! :-)
You can buy that in 5s an run one strip all the way down the battery pack then solder a bus bar on it then put a lug on it. Average joe an Pete tested those fuses they pop around 8 amps. They make the build a whole easier bee using them on my 7s batterys.
With my 14S batteries I cant do that :-/
Yes weekend again, wow stuff.....
Hi david vantongerloo
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
You can heat the house with that 20A 😂
You got that right!! :-)
I read the thumbnail as "You can moon on fly to the 20 amps"
Well that makes even less sense :-)
@@MyPlayHouse you see, I first read the whole left part and then the whole right part. There was some logic to my reading!
Same :D
I would not use those fuses they are super nice, but I like to use 2 amp fuse wire or less. I like your single strand way better than the new ones. Not a fan of that much heat possible in the bank that could melt something.
Yes, either fuse wire and/ or separate fuse holders. Correctly rated.
It´s a bloody lot of work to put in all those tiny fuses..
@@MyPlayHouse Yeah they are very fiddly. Time consuming to fit. Although it may make the individual battery banks a little bulkier, I would (and will when I build mine) use small fuse holders. Solder 10qmp wire to each position you would spot weld the fuse wire. Join each 10amp wire to holders capable of holding 10amps or more, but put in a small 2,3 or 4 amp glass or ceramic fuse. You'll only ever solder these in once. At least until the cells need changing. The fuse holders and carriers can be purchased from most radio spares stores. Radio Shack or DigiKey type.
That's my suggestion.
Yeah I hate the fuse part too, but they have saved me only once so far but had a shorted cell and the fuse was blown. If it was a higher amp one not sure what would happen.
20 amps. Well, if you ask Tesla motors they don't consider it out of the usual.
Though, most 18650 cells don't actually like providing more than 3-5 amps continuous. One can go a bit higher if one provides some active cooling.
And for a short burst, one can go a lot higher, though with noticeably reduced efficiency.
Though, to be fair here.
Building a battery bank for UPS-ish applications out of Lithium is going down the path that lithium really isn't ideal for.
Due to its tendency to degrade itself by just being around, its high price per kWh (in your case its low due to second hand cells), and the weight reduction compared to lead acid isn't majorly important.
Lead acid on the other hand loves being fully charged and are technically superior for UPS applications, especially at its much lower price per kWh and fairly comparable power density.
Downside with lead acid is though that all battery packs one can easily buy are frankly abhorrently made, lacking both cell balancing, and then most lead acid batteries are discharged beyond what they actually like. (A given cell should never go bellow 1.85 volts) Then there is also the issue of "maintenance free" batteries, that generally die even faster since they barely contain enough electrolyte from the factory, and just a few charges and they start to get crippled. (in short, car batteries are garbage.)
In your case, you use recycled cells, that are somewhat hanging on on their last legs regardless.
Reuse is after all one of the more important steps in recycling.
Hi Today on the Bench
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
@Today on the Bench - But Tesla has new cells, they do not have *USED* cells. Many on CZcams, buy the cells that Tesla throws away. USED cell need to be fused much lower than 8 amps, to gain any SAFETY. These nickel fuses don't add much safety at all ... They only blow with a 100% DEAD SHORT, which are extremely rare ...
@@MrSummitville The argument that new cells can take higher current is partly correct, but also missing the point.
It doesn't matter if a cell can handle 20 amps for the first few charge cycles when it is in a product that is expected to go through at lest a few tens if not well over a hundred charge cycles per year, for a few years time.
In the automotive space, basic safety needs to be maintained for the whole working life of the product.
So the decision to fuse the cells to be able to take 20 amps during normal operation is a bit stupid, since a 5-10 year old cell might not even be able to generate that current, even if it is burning up while trying.
This is less of a problem with lithium iron phosphate batteries, but Tesla uses all sorts of different cell chemistries, with different aging characteristics. So yet again the problem is there.
But I guess it took care companies a good couple of decades to figure out how gears and bearings wears out over a prolonged usage period. I guess they just haven't learned enough about batteries yet. It is after all easy to be lured away by the potential peak performance of a technology, and forget the various downsides of going there.
I bought another brand which almost worked but didn’t so it went back. When I next feel like making battery packs I might try the super capacitor and copper rod method
Hi Jonathan Schneider
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
Great video where did you get your spot welder what model how much cheers
Thank You,, I did this video on it : czcams.com/video/TI_ZV-5WHi4/video.html
20A is not much considering there are 35A capable 18650 cells like SONY VTC6
The most I am planning to charge or discharge each cell is 1.5A so there is a fare to 20A from there.
@@MyPlayHouse So then, what is the point of having those fuses? Seems like a false sense of security - which is very bad thing with 18650 Packs ..
But what about cell balancing if we short all positive side and negative sides?
I do put on a BMS,, later
@@MyPlayHouse but one giant bms for all the cells together right? No cell level balancing?
The flames are the nickel burning off as its nickel coated
Okay,, that kind of sucks,,, one fuse burning might just start something else burning.
cut one of the tabs that is connected to the battery that should half it to 10A
Yes, was thinking the same thing myself. Completely understand they might be engineered to not fail so quickly, but I'd rather have the occasional false trip than set fire to the complete battery bank.
Hi Harry Rickenbach
Thank You very much! but there is just one tab,, not two :-)
Thank you for watching! :-)
Those new fuses seem really over rated, maybe cut or use a dremel tool to grind a V notch in the strip to provide a single point for it to fail.
I don't like the look of the bright red hot effect, too much like a heating element :-(
Keep tinkering mort, you will win :-D
That would be a lot of work..
And so the fuses will do essentially nothing, unless you have a DEAD SHORT CIRCUIT across one cell? I think, those fuses are almost useless. When was the last time you had a DEAD SHORT CIRCUIT across one cell? If 6 Amps can continuously flow into a weak cell, then it will eventually catch on FIRE, before its fuse will blow.
most cells can delevere 8 amps and some are build for 20 amps. For my needs I would have liked these to blow at less amprages,,4-5-6 amps,,, but they are not useless,, just not as quick. remember that the BMS will also protect, and shut down if anything to weird happens.
@@MyPlayHouse No, the BMS does *NOT* shut down the pack, when one weak cell in the P-Pack, gets over-charged by all of other cells in the P-Pack. No, the BMS does *NOT* "shut down if ANYTHING weird happens". The BMS only shuts down for: a) Over-Voltage, b) Under-Voltage and c) Over-Amps. I said, these "fuses" are *ESSENTIALLY* useless because DEAD SHORTS are very rare. The common problem is weak "heater" cells which neither the BMS nor these "fuses" will stop from being over-charged. Put 4 amps into a weak cell and see how long it takes before it bursts into flames.
Can I donate and convert you to coke... freeway coke yuck. I only drink coke not pepsi and not diet either... hows the sugar effect your nice teeth ?? dont want all the time and money you spent on them years ago going to waste.
No I like my freeway :-) and it would ruin you with the amount I drink :-)