TP5100 Dual 4.2V/8.4V Lithium Battery Charger & Protection Board
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Prices updated: 14 Oct 2026
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About this product
A dual-cell lithium charger and protection board based on the TP5100 IC, supporting single 4.2 V and two-cell 8.4 V lithium packs. It accepts a 5 to 15 V DC input and offers programmable charge current from 0.1 A to 2 A, with temperature, overcurrent, under-voltage and short-circuit protection and red/green charge indicator LEDs.
Specifications
- Input voltage
- 5-15V DC
- Battery configuration
- 4.2V / 8.4V (1 or 2 cells)
- Charge current
- 0.1A-2A (programmable)
- Precharge current
- 10%-100% (programmable)
- Switching frequency
- 400 kHz
- Status indicators
- Red and green LEDs
Frequently asked questions
Can I charge a 2S 8.4V pack with this board?
The board is listed for both 4.2 V and 8.4 V lithium packs. Confirm how the 1-cell or 2-cell mode is selected from the markings on the board before connecting a 2S pack.
What do the indicator LEDs show?
The listing states that the red LED indicates charging, and the other LED shows the full or no-load state. Use these LEDs to confirm the charging status during operation.
