David Pack has been using the Firecracker cells this season. They are very punchy, and seem to be ok so far.
The only problem he has, is that they go out of sync (I dont know the correct terminology) ie. they were matched and become unmatched.
If you equalise them before each charge, as he does, they are fine, however if you dont, you will find some cells becoming overcharged compared to others after a few cycles. I know this happens with all cells, but firecrackers appear to be more suseptible to this.
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