<p>1,Overcharge and discharge protection to prevent overcharge and discharge of the battery. Overcurrent protection to prevent abnormal high current of battery</p> <p>2,Balance protection, battery voltage balance, make battery life longer</p> <p>3,Stable heat dissipation, stable heat dissipation of the aluminum substrate, </p> <p>4, safety protection absorbs anti-high voltage, reduces MOS tube breakdown, ultra-low internal resistance MOS</p> <p>5,Suitable for most electric tools on the market, electric scooters, electric bicycles, electric tricycles, electric motorcycles, electric vehicles, electric tools, etc.</p> <p>Product name: 4 strings lithium battery protection board</p> <p>Material: PCB+Metal</p> <p>Color: silver</p> <p>Model: 4S 120A balanced with the same port-3.2v</p> <p>Continuous working current: within 120A</p> <p>Momentary working current: within 300A</p> <p>Charging voltage: 12.8-16V</p> <p>Charging current: within 50A</p> <p>Overcharge protection voltage: single cell 3.75V+\/-0.025V</p> <p>Over-discharge protection voltage: single cell 2.10V+\/-0.05V</p> <p>Short circuit protection: Yes (short circuit test is not recommended)</p> <p>Applicable assembly: three strings of nominal 3.2V lithium iron phosphate batteries</p> <p>Load power: DC 12V within 1500 watts (actual motor starting current is less than 300A</p> <p>Product size: 56 x 86 x 14mm</p> <p>advantage:</p> <p>1. Optimized line, bilateral mos channel</p> <p>2. Increase the heat dissipation aluminum sheet</p> <p>3. Thicken the copper skin of the circuit by 2oz</p> <p>4. original for Hongkang ic</p> <p>5. 20 high-power mos on both sides</p> <p>Package Contents:</p> <p>1 x 4 series lithium battery protection board</p> <p>1 x Sampling cable</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light 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.</p>