3S PCB/PCM- Keeppower XZD-3S1550 (Protection Electronics)
BMS Battery Management System – PCB Protection Circuit for Three Li-Ion Battery Cells (Made in Japan). A Battery Management System (BMS) is an electronic circuit used to monitor and control a rechargeable battery, i.e. a accumulator system is used. The necessity of a BMS arises when several accumulator cells are interconnected to form a battery. The BMS should recognise, monitor and adjust the unavoidable production-related variations of various parameters of the battery cells, such as capacity and leakage currents. Electronics not suitable for tools /Powertoll range.
Application: Li-ion battery packs
Note: After soldering the protection circuit in the battery pack must be activated, this is done by a short charging by the electronics.
Wiring diagram:
Technical Data
| Model | XZD-3S1550 |
| Overcharge protection (VCU) | 4.275V ± 0.05V . |
| Overcharge delay time | 1000ms ± 500ms |
| Overcharge release voltage | 4.075V ± 0.05V |
| Deep discharge protection (VDD) | 2.30V ± 0.10V |
| Under discharge delay time | 100ms ± 50ms |
| Under discharge trigger voltage | 2.70V ± 0.1V |
| Overcurrent protection (IEC) | 26A ± 2A |
| Total PCB resistance | max. 40mΩ |
| Material | FR4 (49.5 mm x 15.0 mm) |
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