3S 11.1V 12.6V Lithium Battery Protection Board Single Double MOS
3S 11.1V 12.6V Lithium Battery Protection Board Single Double MOS
3S Lithium Battery Protection Board – Single & Double MOS for DC Electric Drills
Keep your lithium battery packs running safely and efficiently with this 3-string (3S) Lithium Battery Protection Board. Designed for 11.1V to 12.6V battery configurations, this compact BMS (Battery Management System) board provides essential over-charge, over-discharge, and over-current protection for your DC electric drill battery packs and other 3-cell lithium battery assemblies.
Available in both Single MOS and Double MOS configurations, this board suits a wide range of DIY power tool builds, battery rebuild projects, and custom lithium pack assemblies. The double MOS variant offers enhanced current handling for more demanding applications.
Key Features
- 3S Compatibility: Supports 3-cell lithium battery strings at 11.1V (nominal) and up to 12.6V (fully charged)
- Single & Double MOS Options: Choose the right configuration for your current load requirements
- Multi-Protection Functions: Guards against over-charge, over-discharge, over-current, and short-circuit conditions
- Compact PCB Design: Easy to integrate into battery packs for DC electric drills and similar power tools
- Wide Voltage Input Range: Compatible with USB-based charging setups (5–20V DC)
- Durable Construction: Reliable PCB build for long-lasting performance in demanding environments
Specifications
- Cell Configuration: 3S (3-string)
- Nominal Voltage: 11.1V
- Max Charge Voltage: 12.6V
- MOS Type: Single MOS / Double MOS
- Voltage Range: USB (5–20V DC)
- Model Number: LH0281
- Package Includes: 1 × Lithium Battery Protection Board
- Made in Mainland China
Please Note: Color will be sent randomly. The product may be upgraded over time; appearance and color are subject to change without prior notice. Please consider this before placing your order if you have a specific color or appearance requirement.
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Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: What does a 3S lithium battery protection board do?
A: A 3S lithium battery protection board (BMS) monitors and protects a 3-cell lithium battery string from over-charging, over-discharging, over-current, and short-circuit events. It helps extend battery life and ensures safe operation in devices like DC electric drills and DIY power tool packs.
Q: What is the difference between Single MOS and Double MOS protection boards?
A: Single MOS boards use one MOSFET transistor for switching, suitable for lighter current loads. Double MOS boards use two MOSFETs, which can handle higher current demands and provide more robust protection — making them better suited for higher-drain applications like electric drills.
Q: Is this 3S BMS board compatible with my DC electric drill battery pack?
A: This protection board is designed for 3-string (3S) lithium battery configurations with a nominal voltage of 11.1V and a max charge voltage of 12.6V. It is compatible with most standard 3S lithium battery packs used in DC electric drills. Always verify your battery pack's cell count and voltage rating before installation.
Q: Does this board come with a battery or charger?
A: No, this listing includes only the battery protection board (1 piece). Batteries and chargers are sold separately.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.