5S 21V 10A / 15A / 20A / 25A Lithium Battery Protection Board (BMS)
The 5S 21V lithium battery protection board is designed for equipment that requires stable, high-current output—such as power tools, cordless cleaning machines, garden tools, e-bikes, energy storage modules, and industrial portable devices.
It provides precise cell monitoring, fast short-circuit response, MOSFET-level current control, and reliable overcharge and over-discharge protection to ensure long-term battery safety.
This BMS supports full OEM/ODM customization, including discharge current options (10A/15A/20A/25A), PCB layout, wire harness design, connector selection, and functional upgrades such as temperature sensors or communication modules.
All units come with a 3-year warranty, offering long product life and strong assurance for commercial and industrial applications.