4S LiFePO4 BMS
Daly 4S 40 A LiFePO4 common-port · 4S LiFePO4 · 40 A continuous, trips at about 120 A (1 ms), short circuit about 240 A (250 µs) · over-charge 3.75 V/cell (15.00 V pack), over-discharge 2.5 V/cell (10.0 V pack) · balancing 30 mA from 3.5 V
Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Typical part: 4S LiFePO4 BMS — modelled on Daly 4S 40 A LiFePO4 common-port
Pins
- B−
- B1
- B2
- B3
- B+
- P−
- P+
Ratings and limits
| Protection | Daly standard LiFePO4 BMS |
|---|---|
| Cells | 4S LiFePO4 |
| Over-charge | 3.75 V per cell after 1 s · release 3.65 V |
| Over-discharge | 2.5 V per cell after 1 s · release: connect a charger (or the cells recover above 2.7 V) |
| Discharge current | 40 A continuous · over-current trip about 120 A after 1 ms |
| Short circuit | about 240 A · 250 µs · release: remove the load |
| MOSFET resistance | 3.8 mΩ (150 mV and 6 W at 40 A) |
| Balancing | passive, 30 mA from 3.5 V |
| Temperature protection | none: above its continuous rating it heats, and its MOSFETs can fail shorted |