Description:20S 72V 90A BMS PCM Protection PCB for Li-ion 18650 Battery with Balance Charge
Specification:Electrical parameters: (Lithium ion battery) (20 string)
| Detail | Specifications | Tipical | Unit |
| Discharge | Continuous discharging current | 90(max) | A |
| Instantaneous discharge current | 160 | A |
| Charge | Charging voltage | 84 | V |
| Charging current | 90(max) | A |
| Overcharge protect | Over-charge detect | 4.28±0.05 | V |
| Protect delay | 100 | mS |
| Over-charge release | 4.08±0.05 | V |
| Balance | Detect voltage | 4.2±0.025 | V |
| Release voltage | 4.2±0.05 | V |
| Balance current | 60±5 | mA |
| Over-discharge protect | Over-discharge detect | 2.55±0.08 | V |
| Over-discharge detect delay | 50 | mS |
| Release voltage | 2.9±0.1 | V |
| Over-current protect | Detect voltage | 150 | mV |
| Detect delay | 15 | mS |
| Current detect | 200±20 | A |
| Release condition | Cut Load | |
| Short-circuit protect | Protect condition | Cut Load | |
| Detect delay | 200 | uS |
| Release condition | Cut Load | |
| Temperature protect | Temperature protect | / | ℃ |
| Resistance | Inner | ≤15 | mΩ |
| Self-consumption | Working current | ≤70 | uA |
| | Sleep current (when over-discharge) | ≤10 | uA |
| Working temperature | Range | -30/+80 | ℃ |
Features:This product is 20 string 72V 74V 84V lithium battery power protection board.
With a balanced, same port 90A discharge.
With heat sink, size: 120X 60X14mm.
With cable, length is 300mm.
Protection board with overcharge protection, over discharge protection, over current protection, short circuit protection, temperature protection.
Attention when connecting:
When we connect BMS with cells or disassemble BMS from battery pack, the following order and regulations must be complied with to avoid damage of components of BMS and problems of not protecting of cells.
In order to achieve the best performance of BMS and to run the longest distance, all the battery must be matched well (Each battery voltage ≦0.05V, IR≦15 mΩ,capacity≦30mAh) to make sure the better consistency of the battery.
Cell must be connected in parallel first, after then connected in series
Order of connection:
Step1: Connect charging /discharging wire , battery pack negative wire
Step2: After confirm the wires are connected OK, plug the connector cable in the BMS
DO not plug Connector cable in the BMS before connect wire!!
Attention: ESD protection during work.
Package Included:1 x 20S 90A Lithium Battery Protection Board
More Details: 
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