5S 18650 Lithium Battery Balancer Board, 4.2V 66mA Equalization
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Prices updated: 13 Oct 2026
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About this product
A passive balancing board for a 5-cell lithium battery pack that is not charged with balanced charging. It equalizes cell voltage at 4.2V with a 66mA equalization current, shunting charge from fully charged cells through a resistor. It does not provide charge or discharge protection and cannot replace a protection board.
Specifications
- Cells
- 5 in series (5S) / 5 خلايا على التوالي (5S)
- Equalization voltage
- 4.2 V / 4.2 فولت
- Equalization current
- 66 mA / 66 مللي أمبير
- Board size
- 37.3 × 25.8 × 2.4 mm
- Protection
- None (balancing only) / لا توجد (موازنة فقط)
Frequently asked questions
Does this board protect the battery from overcharge?
No. The listing states it has no charge or discharge protection and cannot replace a protection board. Use a separate protection board or BMS with the pack.
What is this board used for?
It balances the cell voltages in a pack that is charged without balanced charging, so all cells reach full charge together.
