3S BMS (FL25A)
HX-3S-FL25A (no balancing; transient 34–40 A) · 3S Li-ion · 25 A continuous, trips at about 37 A (10 ms), short circuit about 125 A (300 µs) · over-charge 4.3 V/cell (12.90 V pack), over-discharge 2.8 V/cell (8.4 V pack) · no balancing
Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Typical part: 3S BMS — modelled on HX-3S-FL25A (no balancing; transient 34–40 A)
Pins
- B−
- B1
- B2
- B+
- P−
- P+
Ratings and limits
| Protection | HX-series board (HY-type protection ICs) |
|---|---|
| Cells | 3S 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 | 25 A continuous · over-current trip about 37 A after 10 ms |
| Short circuit | about 125 A · 300 µs · release: remove the load |
| MOSFET resistance | 25 mΩ (625 mV and 16 W at 25 A) |
| Balancing | none |
| Temperature protection | none: above its continuous rating it heats, and its MOSFETs can fail shorted |