7s /29.4v Battery PCB
Negotiable /Piece
Min.Order:5 Pieces
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Battery Packs Protection Circuit Board (PCB) For 4S 12V /12.8V LiFePO4 battery pack.
BMS Specifications For 7S Li-ion Battery Packs | |||
Model: OSN-7S2020-BMS | |||
No. | Test item | Criterion | |
1 | Voltage | Charging voltage | DC:29.4 V CC/CV |
Balance voltage for single cell | 4.20+0.025V | ||
2 | Current | Balance current for single cell | 84+10mA |
Current consumption for single cell | ≤20μA | ||
Maximal continuous Charging current | 20A | ||
Maximal continuous Discharging current | 20A | ||
3 | Over charge Protection | Over charge detection voltage | 4.25+0.025V |
Over charge detection delay time | 0.5—2S | ||
Over charge release voltage | 4.05+0.05V | ||
4 | Over discharge protection | Over discharge detection voltage | 2.50+0.062V |
Over discharge detection delay time | 10-300mS | ||
Over discharge release voltage | 2.50+0.062V | ||
5 | Over current protection | Over current detection voltage | 0.62v |
Over current detection current | 55+10A | ||
Detection delay time | 5ms—20ms | ||
Release condition | Cut load, Automatic Recovery | ||
6 | Short protection | Detection condition | Exterior short circuit |
Detection delay time | 200-500us | ||
Release condition | Cut load, Automatic Recovery | ||
7 | Resistance | Protection circuitry (MOSFET) | ≤20mΩ |
8 | Temperature | Operating Temperature Range | -40~+85°C |
Storage Temperature Range | -40~+125°C | ||
9 | Size | L65*W50*T14mm |