ADOPTS WITH LITHIUM CELL MANAGEMENT OFFERS FAST AND SAFE CHARGING--Adopt intelligent lithium cell management IC for fast and safe charging BALANCING CHARGING EXTENDS BATTERY LIFE--With balance charging to balance the characteristic of each battery in battery pack and prolong battery life MULTI-OVER PROTECTION ENSURES SAFETY USE-- a of protection functions including overcharge, over-discharge, short circuit, and temperature protection EQUIPPED WITH ALUMINUM FIN ENSURES QUICK HEAT DISSIPATION--Equipped with thickened aluminum fin to achieve quick heat dissipation MANY TESTING ENSURES HIGH QUALITY--This product has gone through load and aging test for quality assurance Discharge current: 18a Charging current (same port): 10a 10a Main circuit on-resistance: less than or to 30m ohm Charging voltage: 16.8v Overload protection Detection voltage: 4.25 +/- 0.025v Detection delay: 100 50 50ms Release voltage: 4.15 +/- 0.05v About discharge protection Detection voltage: 2.7 +/- 0.1v Detection delay: 100 50 50ms Release voltage: 3.0 +/- 0.1v Overcurrent Protection Detection voltage: 100MV Detection delay: 1000ms +/- 500ms Current protection: 40 +/- 6a -consumption Working power consumption: 30ua Sleep power consumption when discharging: 10ua Operating temperature range: -30/+80°C Colour: Green Material: ABS+Metal Size: 35 x 35 x 2mm Package Contents: 1 x bms battery charging protection board Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.