3S 15A 12.6V Li-ion Lithium Battery Protection BMS Board | 18650 Pack Charging Module

The 3S 15A Lithium Battery Protection Board (BMS) is designed to manage and protect 3-cell lithium-ion or lithium polymer packs. It ensures safe charging/discharging by preventing overvoltage, undervoltage, short circuits, and current overload. With its compact size and 15A continuous current rating, this BMS is ideal for small power applications like LED lighting, portable devices, low-power robotics, and DIY battery banks.

Frequently Asked Questions (FAQs):

Q1: What battery types are supported?
This BMS works with 18650, 26650, or polymer Li-ion cells in a 3S configuration (3 cells in series).

Q2: What’s the maximum current rating?
It supports 15A continuous discharge and around 25–30A peak current for short durations.

Q3: Can I use it for drills or high-power tools?
⚠️ Not recommended. For drills, sprayers, or power tools, use a 20A+ or balanced BMS designed for high discharge currents.

Q4: Does it include balancing?
Most 15A versions are non-balancing, meaning they don’t equalize cell voltages. For longer pack life, a balanced BMS is preferred.

Q5: Does it have reverse polarity protection?
No, please connect wires carefully — incorrect polarity may damage the board.

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🔹 Specification Table