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AJMRTC 4S 20A BMS Battery Protection Module, 4.35V Overcharge & 2.5V Over-discharge Protection, 5A Discharge with Cell Balancing, Lithium Battery Management Board for 4S Series Li-ion Battery Pack
- - 4S 20A BMS module supports 4-series lithium battery packs, with 4.35V overcharge and 2.5V over-discharge protection per cell
- - Built-in cell balancing function equalizes voltage of each battery cell, extending overall battery service life
- - Rated 5A discharge current, peak 20A current capacity, reliable power output for battery-powered devices
- - Integrated multi-protection design: overcharge, over-discharge, over-current and short-circuit safety cut-off
- - Compact PCB design, easy to assemble, widely used for DIY lithium battery packs, power storage and portable power supplies
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AJMRTC 4S 20A BMS protection module is dedicated for 4-series lithium-ion battery packs. It provides precise cell-level monitoring with 4.35V overcharge protection and 2.5V over-discharge protection to prevent battery damage. Equipped with cell balancing function, it balances voltage differences between individual cells to maximize battery capacity and prolong cycle life. This BMS supports 5A continuous discharge and peak 20A current, featuring over-current and short-circuit auto cut-off protection. Compact PCB structure simplifies battery pack assembly. Ideal for DIY power banks, portable power stations, energy storage systems and custom lithium battery projects. Please strictly follow wiring instructions; wrong wiring may burn the module.
- Model: 4S 20A BMS Protection Module
- Battery Configuration: 4S (4 Cells in Series)
- Overcharge Protection Voltage: 4.35V per cell
- Over-discharge Protection Voltage: 2.5V per cell
- Continuous Discharge Current: 5A
- Peak Current: 20A
- Function: Cell Balancing, Overcharge, Over-discharge, Over-current & Short-circuit Protection
- Application: 4S Li-ion Battery Pack, DIY Energy Storage, Portable Power
- Package Includes: 1 × BMS Protection Module
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by ThermalNest Return Policy
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