1/5/10pcs 21V 180A 4MOS Battery Protection Board Makita Universal For Electric Wrench Balance Board Power Tool

Semi-finishedproduct : No High-concerned chemical : none Electronic : No Model Number : 4MOS DIY Supplies : Electrical Brand Name : Stlxy Origin : Mainland China

Cell specifications: 5S 5-string 3.7V ternary lithium battery, maximum full charge voltage 21V ️ Not compatible with 3.2V lithium iron phosphate batteries! MOS configuration: 4 low internal resistance power MOS transistors connected in parallel, balanced shunt, reducing high current operating temperature rise Current specification: Supports a peak current of 180A, meeting the high torque impact load requirements at the moment of starting the electric wrench Balancing function: Equipped with passive balancing resistors, it balances the voltage of the five battery cells during the charging stage, reduces the voltage difference between the cells, and extends the battery cycle life Complete and perfect protection mechanism Overcharge protection: Single section 4.25V cut-off charging Overdischarge protection: Single section 2.5V cut-off output to prevent deep depletion and damage to the battery cells Overcurrent protection, load short-circuit self-locking protection, NTC high-temperature power-off protection Battery positive and negative pole anti reverse connection, spot welding assembly is not easy to burn the circuit board Shell adaptation: The PCB shape and soldering position are compatible with mainstream domestic Makita style battery shells on the market, and old batteries can be directly refurbished and replaced Applicable equipment: Makita style impact electric wrench, angle grinder, lithium drill, garden electric pruning tool Charging adaptation: Universal 5S 21V ternary lithium battery charger, charging and cell balancing operate synchronously Designed for 5S ternary lithium cells, maximum full charge voltage reaches 21V. 4 low internal resistance MOSFETs work in parallel for uniform current sharing and mild temperature rise under heavy load. Support peak discharge current up to 180A to handle instantaneous high torque surge of electric impact wrench. Built-in passive cell balance circuit to equalize voltage difference between cells and extend battery cycle life. Complete protection circuit: over-charge, over-discharge, over-current, short-circuit, thermal cut-off and reverse polarity protection. PCB dimension and pad layout fit mainstream domestic Makita-style battery housing for easy pack refurbishment. Suitable for impact wrench, angle grinder, power drill and garden pruning power tools. Notice: Only for ternary lithium battery,NOT compatible with lithium iron phosphate batteries. label:yes