Intelligent protection and protection mechanism effectively protect the safe use of your lithium battery: overcharge protection, overcurrent protection, overdischarge protection, temperature protection, short circuit protection, balanced protection and moisture protection.Heat dissipation performance: Built-in cooling fin structure can quickly export the internal heat of the equipment, reduce the temperature of core components, and avoid performance degradation or damage caused by overheating.Optimize the air duct structure: the of the heat sink adopts fin design to increase the contact area with air and accelerate the heat dissipation.Heat-conducting material support: the joint can be equipped with heat-conducting silicone gasket to fill the , reduce the contact thermal resistance and improve the heat-conducting efficiency by 30%.Safety protection: insulation design to avoid the risk of short circuit; Three-proof paint coating, suitable for wet and dusty environment.Rated current: 120A current: 300AApplication scenario: it is suitable for various high-power equipment scenarios such as automobile start-stop/electric vehicle/emergency power supply.Color:BlackMaterial:ABSPackage Contents:1 * 4S battery balance boardOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.