2S BMS
HX-2S 20 A board with balancing · 2S Li-ion · 20 A continuous, trips at about 30 A (10 ms), short circuit about 100 A (300 µs) · over-charge 4.3 V/cell (8.60 V pack), over-discharge 2.8 V/cell (5.6 V pack) · balancing 40 mA from 4.2 V
Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Typical part: 2S BMS — modelled on HX-2S 20 A board with balancing
Pins
- B−
- B1
- B+
- P−
- P+
Ratings and limits
| Protection | HX-series board (HY-type protection ICs) |
|---|---|
| Cells | 2S Li-ion |
| Over-charge | 4.3 V per cell after 1 s · release 4.15 V |
| Over-discharge | 2.8 V per cell after 100 ms · release: connect a charger (or the cells recover above 3 V) |
| Discharge current | 20 A continuous · over-current trip about 30 A after 10 ms |
| Short circuit | about 100 A · 300 µs · release: remove the load |
| MOSFET resistance | 20 mΩ (400 mV and 8 W at 20 A) |
| Balancing | passive, 40 mA from 4.2 V |
| Temperature protection | none: above its continuous rating it heats, and its MOSFETs can fail shorted |