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3S/4S/5S Lithium Battery Protection Board – BMS Module for 18650 Li-ion Cells (60A–100A, with Balance)

3S/4S/5S Lithium Battery Protection Board – BMS Module for 18650 Li-ion Cells (60A–100A, with Balance)

Regular price £6.90 GBP
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This multi-purpose Battery Management System (BMS) offers reliable protection for 3S, 4S, or 5S lithium-ion battery packs. Compatible with 18650 and similar 3.7V cells, the module features overcharge, over-discharge, overcurrent, short circuit, and temperature protection. Also includes active cell balancing for improved battery health.


Key Features:

  • Selectable Configuration: Supports 3S, 4S, or 5S lithium battery packs (3.7V per cell)

  • Overcharge Protection: 4.21–4.29V per cell

  • Over-discharge Protection: 2.72–2.88V per cell

  • Overcurrent Protection: Up to 100A

  • Charging Current: Up to 60A

  • Discharge Current (Same Port): Up to 60A

  • Discharge Current (Separate Port): Up to 80A

  • Balance Function: Included – 60mA current balancing

  • Temperature Monitoring: Yes

  • Short Circuit Protection: Yes, with fast recovery

  • Application: Suitable for e-bikes, DIY battery packs, solar storage, power tools


Technical Parameters:

Function Range / Value
Overcharge Voltage 4.21–4.29V
Over-discharge Voltage 2.72–2.88V
Recover Voltage (Overcharge) 4.14–4.24V
Recover Voltage (Over-discharge) 2.9–3.1V
Max Charging Current 60A
Max Discharging Current 60A–80A
Short Circuit Delay 100–600µs
Balance Current 60mA
Operating Temp Standard BMS range
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