Author Topic: 18650 parallel sanity check  (Read 267 times)

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Offline paulca

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18650 parallel sanity check
« on: December 30, 2017, 02:01:32 pm »
So I just want to check in case I've lost the plot, but...

I have some 18650 cells out of a brand new laptop pack.  They are factory paired in parallel.  I have put them into a 3 series 2 parallel configuration in an 18650 battery holder.

The cells are 3.7V 2600mAh each, so 3S2P creates a 11.1V (12.6V) 5200mAh pack (which was the rating on the laptop battery before I dismantled it).

This means to charge it at 0.5C I supply 2600mAh and charge to 12.6V.  For 1C fast charge I supply 5.2Amps, although I think I'll keep that to 5 Amp max.

Note, I have a standard balance lead wired to 0V, 3.7V, 7.4V, 11.1V and will be using a dedicated LiIo balance charger.
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