4S 30A 18650 Li-ion BMS Protection Board 14.8V with Cable
Currently unavailable
No store has this product in stock right now. Prices below are the last ones we recorded.
Prices updated: 14 Oct 2026
Price history
Lowest daily price, last 90 days
Not enough price history yet.
About this product
A 4-series battery protection board for 18650 lithium-ion packs with a 30 A current rating, supplied with a cable. It is a balance board with an auto-recovery protection function and integrated MOS switching devices, intended for drill motor and DIY battery pack builds.
Specifications
- Series configuration
- 4S (4 cells)
- Nominal pack voltage
- 14.8 V (listed as 14.8V / 16V)
- Max current
- 30 A
- Cell type
- 18650 lithium-ion
- Features
- Balance, auto recovery
Frequently asked questions
How do I wire the balance leads?
Connect the pack negative to B- and the pack positive to P+ or the top terminal as labelled. Then connect the balance leads in order from B- up to the top cell, following the labels on the board, so each cell junction goes to its matching pin.
Can I charge the pack through this board?
This is a protection board, not a charger. Charge the 4S pack with a dedicated 4S lithium-ion charger set to 16.8 V (4.2 V per cell) full charge.
