Both are Samsung INR18650-20R 2000mAh, which is my current go-to hybrid cylindrical cell, cheaply available, and having an impeccable service record and as low an IR as any other cell in that form factor.
And a small sample of the packs I have made:
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Where did you get the batteries?
ReplyDeleteThe cells? From a supplier. They are easy to find. Try googling.
DeleteI have specialized equipment to assemble packs though. If you want to use these cells in a pack application without having a pack made you need a high-current cell holder.