BMS 13S 48.1V 30A Li-ion Board with Temperature Protection
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Prices updated: 13 Oct 2026
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About this product
A 13-series lithium-ion battery protection board (BMS) rated 48.1V and 30A, built with MOSFET switches for 18650 cell packs. It provides over-current and temperature protection for a 13S pack. Confirm the cell count and balance wiring before connecting any cells.
Specifications
- Cell configuration
- 13S
- Nominal voltage
- 48.1V
- Max current
- 30A
- Protection
- Over-current, temperature
- Cell type
- 18650
Frequently asked questions
How many balance connections does a 13S board need?
A 13-cell pack has 14 connection points: B- at the first cell's negative, 12 junctions between adjacent cells, and B+ at the top cell's positive. Each point needs its own balance lead.
How should I place the temperature sensor?
Position the temperature sensing lead against the cells as shown in the board's wiring diagram, and keep it insulated from the cell terminals so it reads the cell temperature accurately.
