1S 3.7V 10A 18650 Battery Protection Board (BMS) | Safe Lithium Power
1S 3.7V 10A 18650 Battery Protection Board (BMS) | Safe Lithium Power
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Short Product Description
Short Product Description
Protect your custom lithium-ion battery packs with our reliable 1S 3.7V 10A 18650 Battery Protection Module. Designed to instantly prevent overcharging, deep depletion, and short circuits, this compact BMS ensures your DIY electronics, robotics, and IoT devices run safely and efficiently. Build your power systems with confidence and maximize your battery lifespan.
Key Features
Key Features
- Comprehensive Safety Protocols: Built-in overcharge, over-discharge, over-current, and short-circuit protection keep your hardware and workspace completely safe.
- High Current Capacity: Supports a steady 10A continuous discharge and a 12A peak, easily handling demanding electronic components and motor startups.
- Space-Saving Footprint: Measuring just 35mm x 7.4mm, the module integrates seamlessly inside tight enclosures and custom 3D-printed battery cases.
- Extends Battery Lifespan: By keeping voltage levels strictly within the safe 4.23V parameter, it significantly reduces the chemical degradation of your 18650 cells over time.
- Straightforward Wiring: Clearly labeled B+/B- (Battery) and P+/P- (Power In/Out) solder pads make assembly quick and error-free for makers of any skill level.
Full Product Description
Full Product Description
Ultimate Protection for Your Lithium-Ion Projects
Working with 18650 lithium batteries requires precision and absolute safety. Whether you are repairing a flashlight, building a custom power bank, or designing reliable power systems for STEM electronics like Arduino and Raspberry Pi, battery health is critical. This 1S (Single Cell) Battery Management System (BMS) acts as a vigilant safeguard for your power source, ensuring every charge and discharge cycle is perfectly regulated.
Why You Need a Dedicated BMS Module
Lithium-ion cells possess incredible energy density but are highly sensitive to voltage extremes. Our protection board actively monitors your 3.7V cell. If the voltage spikes dangerously high during charging or drops too low under heavy load, the board instantly severs the connection. This critical intervention prevents irreversible cell chemistry damage, swelling, overheating, and potential fire hazards, giving your hardware enterprise-grade stability.
Ultra-Compact Design, Robust 10A Output
Despite its ultra-compact 35mm footprint, this PCB efficiently handles a continuous working current of up to 10A, with momentary peaks up to 12A. This makes it perfect for high-drain applications like DC motors, custom LED lighting rigs, and portable power tools. You never have to compromise on performance to guarantee the safety of your electronics.
Technical Specifications
Technical Specifications
- Cell Configuration: 1S (Single Cell)
- Compatible Batteries: 18650 Lithium-Ion / 3.7V LiPo
- Working Current (Upper Limit): 10A
- Peak/Overcurrent Detection: 12A
- Overcharge Detection Voltage: 4.25V ±0.05V
- Overcharge Release Voltage: 4.23V ±0.05V
- Standard Charging Voltage: 4.2V
- Dimensions: 35mm x 7.4mm x 2.2mm
Delivery Options
Delivery Options
- Local delivery within Hong Kong and in-store pickup.
- Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.
- Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).
- Estimated delivery time: 1–3 business days after dispatch (Hong Kong).
- In-store pickup details (location and time) will be confirmed by email or phone message.
- Delivery times are estimates and may be affected by weather or unforeseen circumstances.
FAQ Section
FAQ Section
Q. Can I use this BMS for a 2S or 3S series battery pack?
A. No, this is a 1S (Single Cell) protection board designed strictly for a single 3.7V cell or multiple cells wired in parallel. For series connections that increase voltage, you must use a dedicated 2S or 3S BMS.
Q. Do I need a special charger if I use this board?
A. Yes, you still need a dedicated 4.2V lithium-ion battery charger. The BMS protects the battery from catastrophic overcharging, but it is a safety net, not a primary charging controller.
Q. Is this module compatible with flat Lithium Polymer (LiPo) cells?
A. Yes! As long as your LiPo battery has a nominal voltage of 3.7V and a maximum charge voltage of 4.2V, this protection board will work perfectly.
Target Users / Applications
Target Users / Applications
- DIY electronics hobbyists and PC modders
- STEM educators and students (Arduino/Raspberry Pi power supplies)
- Hardware engineers prototyping IoT devices
- Technicians repairing portable electronics and power tools
