Build Safer, Longer-Lasting 48V Battery Packs

Whether you are repairing a faulty electric bike battery or building a custom energy storage solution, the heart of your system is the Battery Management System (BMS). This 13S 20A Lithium Battery Protection Board provides critical monitoring for 13-series (48V nominal) Li-ion battery packs.

Why This BMS Stands Out?

Unlike generic boards, this module is designed with a long strip form factor (217mm x 63mm), specifically engineered to fit into narrow battery casings commonly found in e-bikes, scooters, and electric skateboards.

Comprehensive Protection Logic

Don't risk battery failure or fire hazards. This BMS acts as a gatekeeper, constantly monitoring voltage and current. It automatically disconnects the circuit if it detects:

• Overcharge: Prevents voltage from rising to dangerous levels during charging.
• Over-discharge: Stops power drain before cells are permanently damaged.
• Short Circuit: Instantly cuts power to prevent thermal runaway.

Active Cell Balancing

Unbalanced cells kill battery packs. This board features built-in passive balancing circuitry that ensures all 13 cell groups remain at the same voltage level, significantly extending the overall lifespan and usable capacity of your battery pack.