Ali MirjamaliMar 16, 2023

I am looking at various 2 cell 18650 Li-Ion BMS chips and modules. Strangely I could not find a single commercial module for my application.

TP5100 provides a nice switching buck converter with constant voltage/current charging. Programmable charge current, battery temperature monitoring, short circuit protection. But unfortunately it is more suited for single cell as it lacks individual cell balancing and over charge/discharge protection.

Show threadAli Mirjamali

HX-2S modules provide individual cell over-discharge/charge protection (HX-2S-A10). Some of them can balance charge individual cells (e.g. HX-2S-JH10/20). But none provides a buck converter and configurable charging circuit.

Most of these BMS will cycle on/off when batteries are near discharged/recovery threshold.

Mar 16, 2023 at 12:30pmWeb