Overcharge and discharge protection to prevent overcharge and discharge of the battery. Overcurrent protection to prevent abnormal high current of batteryBalance protection, battery voltage balance, make battery life Stable heat dissipation, stable heat dissipation of the aluminum substrate, safety protection absorbs anti-high voltage, reduces MOS tube breakdown, ultra-low internal resistance MOSSuitable for most electric tools on the market, electric , electric bicycles, electric tricycles, electric motorcycles, electric vehicles, electric tools, etc.Model: 4S120A balanced with the same port-3.2vContinuous working current: within 120AMomentary working current: within 300ACharging voltage: 14.8-16VCharging current: within 50AOvercharge protection voltage: single cell 3.75V+/-0.025VOver-discharge protection voltage: single cell 2.10V+/-0.05VShort circuit protection: Yes (short circuit test is not recommended)Applicable assembly: three strings of nominal 3.2V lithium iron phosphate batteriesLoad power: DC 12V within 1500 (actual motor starting current is less than 300A note: Different batches, product appearance and color may be different, does not affect the usecolor:SilverMaterial:PCBPackage Contents:1 x Protection Board1 x cableOnly 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.