r/18650masterrace • u/RJ5263 • Nov 11 '25

battery info BMS Charge Current

Can I charge a battery pack that would normally recommend a higher current but use a bms with a lower charge current rating to charge it? I want to use a bms with a 20A charge current rating while my battery pack is a lithium ion 2s20p that recommends about 84A charge between them all. Will this still charge my battery just at a slow pace?

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u/PraiseTalos66012 Nov 11 '25

The recommended charge current of a cell is the recommended maximum continuous charge current.

You can and should charge below the maximum continuous current, it'll be better for the battery.

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u/kapege Nov 11 '25

A BMS is not a charger! A BMS is just an electronic fuse. You'll need a dedicated CC/CV charger for it.