Picked up a decent quantity of Samsung ICR18650-22P
cells. (near 600, "new")
In 10s2p bricks w/BMS - 36V 4.4Ah
Graph shows "effectively empty" at 3.40V - (static condition)
Cells are rated at:
10A max sustained output
20A surge output
Much better than the LiPo and 18650's I've pulled out of laptops.
At 2p, that's 20A continuous and 40a surge, they look perfect for rebuilding NiCd power tool packs!
Tested for fit in:
12V 1.2Ah NiCd >> 3s2p 11.2V 4.4Ah B&D Firestorm battery packs - 2 built
14.4V 1.2Ah NiCd >> 4s2p 14.8V 4.4Ah B&D Firestorm battery packs
18V 1.4Ah NiCd >> 5s2p 18.5V 4.4Ah B&D Firestorm battery packs - 2 built
24V 1.4Ah NiCd >> 6-7s2p 22.2-25.9V (need to test fit and function of 7s) 4.4Ah B&D Firestorm battery packs
18.5V 3-4Ah Li-ion >> 18.5V 5s2p 4.4Ah Ryobi Lithium
Broke open 2 - 10s2p bricks and:
2 x 18V(5s2p) Firestorm = 20 cells
2 x 12V(3s2p) + 1 x 14.4V(4s2p) = 20 cells
5s2p went nicely into 18V packs
Note: I arraigned cells so that the metal negative strip is positioned directly over the negative casing of the negative cell.
A lucky happenstance ... perhaps.
3s2p went nicely into 12V packs
Planned! was this circuitous series route that similarly placed the negative cell casing under the metal negative tab.
2 x 18V and 2 x 12V completed.
14.4V (8s2p) will take a bit more planning, either a bit of reforming or some iffy case trimming.