Introducing the Ultimate Battery Protection Solution
Are you building or upgrading a lithium-ion battery pack for your e-bike, power tool, solar storage, or DIY electronics project? Safety and longevity are non-negotiable — and that’s exactly where the 3S/4S/5S BMS 12.6V 16.8V 21V 3.7V 100A Li-ion LMO Ternary Lithium Battery Protection Circuit Board comes in.
This compact yet powerful Battery Management System (BMS) is engineered to protect your battery pack from overcharge, over-discharge, over-current, short circuits, and temperature extremes — ensuring reliable performance and extending the lifespan of your Li-ion and Li-polymer cells.
Key Features:
- Wide Voltage Compatibility: Supports 3S (12.6V), 4S (16.8V), and 5S (21V) configurations — perfect for 3.7V nominal cells.
- High Current Handling: Rated for continuous 100A discharge, ideal for high-power applications.
- Advanced Protection: Includes over-voltage, under-voltage, over-current, short-circuit, and temperature protection.
- Balancing Function: Active cell balancing ensures uniform charge across all cells, maximizing capacity and longevity.
- Li-ion & Li-polymer Ready: Works seamlessly with LMO, NMC, and other ternary lithium chemistries.
- Plug-and-Play Design: Simple wiring with clear labeling — no complex setup required.
Whether you’re repairing an old battery pack or building a custom one from scratch, this BMS board gives you peace of mind without breaking the bank.
Why Choose This BMS at Just $4.48?
At only $4.48, this BMS offers exceptional value — far below what you’d pay for comparable protection boards elsewhere. With over 1,065 units sold recently, it’s a trusted choice among hobbyists, engineers, and DIY builders worldwide.
Don’t risk damaging expensive battery cells or creating safety hazards. Invest in reliable protection today — your projects (and your safety) deserve it.
🔋 Ready to upgrade your battery pack?
Price: $4.48 | Based on latest sales volume: 1,065+ units sold
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