Lithium Battery BMS Board, 3S, 4S or 5S Options

Choose a lithium battery management board for a compatible multi-cell pack project. Separate three-, four- and five-series options let you select the board intended for the number of cells in your planned series arrangement.

Match the BMS to your battery pack configuration

• ✅ Select by series cell count — option A is shown for 3S, B for 4S and C for 5S, helping you distinguish the available boards.
• ✅ Compare the connection layout before fitting — the product images show the cell taps and pack connection points for each version.
• ✅ Source the board separately — this is a battery-pack component, so you can choose it to match a compatible pack rather than buying a complete battery.

One lithium battery BMS/protection circuit board per selected option. Option A: 3S; option B: 4S; option C: 5S. Confirm cell chemistry, cell count, charge limits, load requirements and the exact board’s instructions before installation. Cells, charger, wiring and enclosure are not included as a complete battery system. This board is not a standalone charger.

The images show the three series-count versions and their separate connection layouts.

Confirm your pack specifications and select the matching series-count option for your build.