2S 20A 7.4V 8.4V 18650 Lithium Battery Protection Board Standard/Balance Diy Bms For 18650

Product Description

The 2S 20A 18650 Lithium Battery Protection Board serves as the dedicated controller for your 7.4V battery assemblies. It utilizes a high-accuracy voltage detection circuit to monitor each cell individually. If a cell reaches its full capacity or drops to a dangerous voltage level, the module instantly cuts the power supply to prevent damage. This module is designed for a service life of over 30,000 hours, making it a reliable choice for long-term industrial or hobbyist installations.

Equipped with high-efficiency MOSFETs, the board manages a continuous discharge current of up to 13A, with a peak surge capability of 20A. This makes it suitable for inductive loads like high-torque DC motors that draw significant current during startup. The compact form factor allows it to be tucked neatly inside a 3D-printed battery case or shrink-wrapped directly onto an 18650 pair.

Key Features

• High-Current Handling: Supports a continuous 13A discharge and up to 20A peak, ideal for power tools and robotics.

• Integrated Protection IC: Hardware-level sensing for over-charge, over-discharge, and short-circuit protection.

• Automatic Reset: Restores operation once safe voltage levels are reapplied or the fault condition is removed.

• Compact PCB Footprint: Measuring approximately 45mm x 19mm, it is easy to integrate into slim battery enclosures.

• Low Standby Drain: Consumes less than 10µA, preventing the battery from self-discharging during storage.

Technical Details

• Internal Resistance: Less than 300mΩ.

• Dimensions: 44.8mm x 18.9mm x 3.5mm.

• Weight: Approximately 4g.

• Cell Compatibility: Standard 3.7V Li-ion and Li-Po cells.