4 Series Li-ion Lithium Battery Protection Board 14.8V 16.8V - 4S Enhanced Edition

Keep the battery running normally and prevent battery failure caused by overcharging overdischarging short circuit etc.Features:Applied for any lithium battery with nominal voltage of 3.6V and 3.7V.Suitable for the electric drill with starting current below 80A and power below 135W.Enables 100mA balanced current and 40A continuous current gives well protection for the battery and ensures its longevity.4pcs 15C~20C power batteries or 8pcs 10C~15C's are required to start the electric drill.Strictly follow the figure to connect 0V 4.2V 8.4V 12.6V and 16.8V. Short circuit is prohibited.When there is a brush motor with a load try to connect a non-polar capacitor in parallel to the positive and negative terminals of the motor (withstand voltage over 25V capacity 10uF-100uF) to prevent the reverse peak voltage produced by the motor from interfering with the protection plate or breaking through the MOS tube.When 4 batteries are in series please ensure that the voltage of each battery is the same. If not please fill each battery separately before using it in series.Note:*Do not charge the battery of good quality together with that of bad quality. The better performance the closer the capacity/internal resistance of the 4 pack of batteries. The using effect of 3 good-quality batteries + 1 bad-quality battery is equal to the effect of 4 bad-quality batteries.*In the discharge test the group of batteries with the faster voltage drop is the poor battery.*Do not connect wrong wires.How to Turn on the Electric Drill1. 4pcs 15C~20C power batteries or 8pcs 10C~15C's are required.2. The connecting wires between battery pack and protection board should as shorter and thicker as it can be.3. Output end should not connect any load or device when the first time to solder the batteries.Specifications:Material: Electronic MaterialType: 3S enhanced edition / 3S balanced edition / 4S enhanced edition / 4S balanced edition (optional)Charging Voltage: 16.8V~18.1VContinuous Discharge Current(upper limit): 40A (please lower the use of load current if under the condition of bad heat dissipation)Continuous Charging Current(upper limit): 20ASelf-consuming: 12uA~24uA (typ. value: 18uA)Overcharge Protection Voltage: 4.2V~4.3V (typ. value: 4.25V)Overcharge Recovery Voltage: 4.1V~4.2V (typ. value: 4.15V)Overdischarge Protection Voltage(mA): 2.3V~2.7V (typ. value: 2.5V)Overdischarge Protection Voltage(1C discharge): 2.8V~3.2V (typ. value: 3V)Overdischarge Protection Voltage(2C discharge): 3.2V~3.8V (typ. value: 3.5V)Overdischarge Recovery Voltage: 2.9V~3.3V (typ. value: 3.2V)On-State Internal Resistance: 5m?~7m? (typ. value: 6m?)Overcurrent Protection Current: 70A~90A (typical value: 80A)Overcurrent Delay Time: 50ms~150ms (typ. value: 100ms)Continuous Working Current: 0A~40A (typ. value: 40A)Continuous Output Current: 0W~672W (typ. value: 672W)Ambient Temperature: -40?~85? (typ. value: 25?)Item Size: 5.9*4*0.12cm / 2.32*1.57*0.04in (balanced edition)5.4*4*0.12cm / 2.12*1.57*0.04in (enhanced edition)Item Weight: 9g / 0.31oz (enhanced edition); 10g / 0.35oz (balanced edition)Package Size: 6*4*1cm / 2.36*1.57*0.39inPackage Weight: 10g / 0.35oz (enhanced edition); 11g / 0.38oz (balanced edition)Packing List:1 * Battery Protection Board