Overcharge and discharge protection to prevent overcharge and discharge of the battery. Overcurrent protection to prevent abnormal high current of battery. Balance protection for battery voltage balance to extend battery life. Stable heat dissipation through aluminum substrate. Safety protection with anti-high voltage absorption, reduces MOS tube breakdown, ultra-low internal resistance MOS. Suitable for most electric tools on the market, electric bicycles, electric tricycles, electric motorcycles, electric vehicles, and other similar applications. Product name: Lithium battery protection board Model: 13 series 20A, same port, with equalizing function, disconnection protection Product type: 13S 20A same port Discharge current: 20A Discharge overcurrent protection value: 3-5 times continuous current Internal resistance of main circuit conduction: Less than 20m ohm Charging current [same port]: 6A/6A/6A/10A Charging overcurrent protection: One fifth of discharge overcurrent Charging voltage: Number of series cells in ternary battery pack × 4.2V Applicable battery type: Ternary polymer Product size: 60 x 52 x 10mm Color: Silver Material: PCB + Metal Package Contents: 1 x Battery protection board 1 x Flat cable Note: Light reflection and different displays may cause the color of the item to appear slightly different from the real thing. Measurement allowed error is +/- 1-3cm.