BMS 4S 14.8V 8A Li-ion Protection Board (18650)
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Prices updated: 13 Oct 2026
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About this product
A battery management system (BMS) protection board for a 4-series pack of 18650 lithium-ion cells, rated for 14.8 V nominal and 8 A peak current with over-current protection. It suits low-current 4S battery packs in small DIY and electronics projects.
Specifications
- Cells in series
- 4S
- Nominal pack voltage
- 14.8 V
- Peak current
- 8 A
- Protection
- Over-current
- Cell type
- 18650 Li-ion
- Transistors
- Original MOSFET
Frequently asked questions
How do I wire the balance leads?
Connect the balance wires in order, starting from B- (negative) at the lowest cell up to B+ at the top cell, then connect the main pack leads.
Can I use it for a high-current load?
Its peak current rating is 8 A, so keep the load within that rating. For higher-current loads, choose a BMS with a higher current rating.
