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You need to load test them to see if they are bad or not, just testing voltage and balancing will not produce good results unless you get lucky.
Sounds good but the most important part you are missing in this is to do a load test on the batteries. Balancing them is great and all but it's...
Eric, how much are the Honda sticks you buy on average? Just curious since I have another project coming up I might be able to use them for.
I think considering Steve is one of the more knowledgeable people on this board regarding the subject you might check the ego at the door and look...
Steve, thanks for this.......really helps to understand what the discharge process is doing and how not to damage the packs. Obviously the...
Steve, much appreciated. So if I understand right there's no harm in overshooting the voltage drawdown when using the lowest value load (ie 25W)?...
^^^^^ This is the fellow you should be getting used modules from, NOT ebay.
Definitely will Jeff, very optimistic given the comments/results seen by others. So far will vouch for great service with HA on getting out the...
In case others find this later and want to build their own load tester this is how I did mine and it worked very well to find the bad one(s)....
Make sure to hook up both the high and low beams on the headlight (55w is just the low beam) at once so you can draw maximum current when doing a...
Just ordered one, can't wait to get it installed and see how well it works. Will do a write-up on here too when I get time.
The hobby chargers usually just have 1A discharge setting and in practice it usually comes out to around 0.7A on the readout.
Thanks again Jeff. Not too worried, just wanted to make sure the fans were still part of the package. Great job on streamlining the product and...
Hi Jeff, looking to pick up one of these and finally get it installed in my HiHy. Do you still need to install the battery fan controls as I...
Wow, where to start..... Dielectric increases electrical resistance not decreases. Motors are brush-less, dielectric has no effect except for...
That's exactly what I meant but they are assembled into blocks (see the time lapse video above) so they would check blocks for bad ones and...
I'd like to see the links for the Tesla powerwall being made of rejected 18650 cells (perhaps just a lower capacity grade). Seems more likely...
I'd bet money those Tesla powerwalls are just where Elon puts all the used batteries once they are no longer good for vehicles. It's a great...
X2 Still seems like balancing and then load testing are the issue in finding which ones are bad in the pack.
I think a project like this you will find the issue is the current loads and battery capacities as stumbling points. Also at issue is the...