3S 10A 11.1V 12.6V Li-ion Lithium Battery BMS Protection Board Module
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৳ 75.00৳ 100.00 (-25%)
This compact 3S 10A Lithium-Ion Battery BMS Protection Board is specifically designed to manage and safeguard 3-cell 18650/21700 battery packs. Measuring just 54mm x 18mm, this space-saving module provides a continuous 10A current and comprehensive 11.1V to 12.6V protection against overcharging, over-discharging, overcurrent, and short circuits. It features clearly labeled dual-side solder pads (0V, 3.7V, 7.4V, 11.1V), making it the ideal choice for compact DIY electronics, portable power banks, low-power tools, and LED lighting projects.
Premium 3S 10A Li-ion Lithium Battery BMS Protection Board (11.1V / 12.6V)
Product Overview
Safeguard your custom battery assemblies with this ultra-compact, high-reliability 3S 10A Lithium-Ion Battery Management System (BMS). Measuring just 54mm x 18mm, this slim-profile protection circuit module (PCM) is engineered specifically for 3-cell series configurations using 3.6V/3.7V nominal lithium-ion cells (such as 18650, 21700, or lithium polymer cells). It acts as an internal safety barrier, continuously monitoring the voltage and current profiles of your pack to ensure optimal cell performance and prevent hazardous operating conditions.
Its narrow footprint makes it uniquely suited for space-constrained installations, allowing you to build reliable, high-density power packs for hand-held electronics, portable audio gear, and small-scale automation projects.
Key Features & Technical Highlights
- Ultra-Slim Space-Saving Layout: With its elongated 54mm x 18mm dimensions, this board fits cleanly along the side of standard inline or triangular three-cell configurations, keeping the total size of your finished battery pack as minimal as possible.
- Dual-Sided High-Contrast Labeling: Designed with the builder in mind, the PCB features clean, clear screen-printed solder pads on both sides (0V, 3.7V, 7.4V, 11.1V along with P+ / P- for the load). This dual-sided design makes cable management and sequential cell tap soldering significantly less complicated.
- Integrated 4-Way Protection Logic:
- Overcharge Protection: Instantly halts the input charging pathway if any cell breaches its upper voltage ceiling, eliminating the risk of overheating or cell swelling.
- Over-discharge Protection: Cuts off power to the output load when cell voltages fall below critical thresholds, saving your expensive lithium cells from permanent deep-drain degradation.
- Overcurrent Monitoring: Prevents system stress by tripping the internal circuit if the attached device draws current beyond the safe 10A operating limit.
- Short-Circuit Protection: Rapidly isolates the battery cells from the load terminal points if an accidental external short circuit occurs, protecting the structural integrity of the entire pack.
- Premium Solid-State IC Control: Employs low-impedance switching MOSFETs and precision voltage sensing microchips that draw minimal quiescent current, ensuring your battery packs don’t self-discharge during long storage periods.
Technical Specifications
- Series Configuration: 3S (3 cells connected sequentially in series)
- Nominal Pack Voltage: 11.1V – 12.0V DC (depending on cell chemistry)
- Fully Charged Voltage Ceiling: 12.6V DC
- Maximum Continuous Working Current: 10A
- Physical Dimensions: 54mm (Length) x 18mm (Width)
- Substrate Material: Double-sided rigid FR4 fiberglass board (Blue)
- Compatible Cell Architectures: 3.6V or 3.7V nominal Li-ion cells (18650, 26650, 21700, Li-Po packs)
Common Application Fields
This slender 3S module bridges the gap where traditional bulky square BMS boards cannot fit:
- Portable Audio Equipment: Ideal for building or repairing battery packs inside bluetooth boomboxes, portable guitar mini-amps, and wireless PA speakers.
- Smart Home Devices & Electronics: Perfect for handheld massage guns, facial massagers, wireless security cameras, and compact outdoor multi-LED lighting arrays.
- Robotics & RC Accessories: Great for long-lasting 12V power arrays for small robotic chassis, remote telemetry packages, and field testing equipment.
- Low-Power Portable Power Banks: Excellent for DIY hobbyists constructing custom mini-UPS stations, 12V 18650 battery banks, or solar-powered backup lighting rigs.
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