Features: <br>The protection board is for 7 series 18650 li-ion 3.6V/3.7V batteries. <br>Stable various protective functions for charging and discharging, such as accurate overcharge protection, over-discharge protection, over current protection and short circuit protection. <br>Batteries core hardware balanced processing, proper balanced current, reasonable balanced heat emitting, does not affect performance of battery pack. <br>It has aluminum sheet that would enhance heat dissipation for MOS tube, and extend the service life of MOS tube. <br>Low quiescent power consumption, it can save energy. <br> <br> <br>Specification: <br> <br>Minimum Typical Maximum Unit Note <br>Working Voltage 19.6 <br>29.75 V Circuit normall working range <br>Quiescent Current <br>20 50 μA Single battery voltage 3.6V <br>Operating Temperature -20 <br>+70 ℃ Normall operating temperature range <br>Relative Humidity <br> <br>90% <br>No condensation <br>Storage Temperature -40 <br>+85 ℃ Humidity is less than 90%, no condensation <br>Altitude <br> <br>4000 M <br> <br>Charging Voltage <br> <br>29.75 V CC-CV <br>Function Test Item Symbol Test Condition Minimum Typical Maximum Unit <br>Over Charge Protection Voltage Vc1 At charge off 4.200 4.250 4.300 V <br>Delay Time Tc1 / 10 1000 1700 mS <br>Relieve Voltage Vc2 / 4.150 4.190 4.240 V <br>Charging Current Normal Ioc / <br> <br>20 A <br>Balancing Function Start Voltage <br>/ 4.150 4.200 4.250 V <br>Balancing Current <br>/ 20 <br>35 mA <br>Over Discharge Protection Voltage Vd1 At discharge off 2.700 2.800 2.900 V <br>Delay Time Td1 / 10 200 500 mS <br>Relieve Voltage Vd2 / 2.900 3.000 3.100 V <br>Recovery Condition / / Disconnecting load <br>Over Current Portecion Over Current 1 Protection Current Ioc1 <br>60 <br>100 A <br>Over Current 1 Protection Delay Time Toc1 <br>20 <br>200 mS <br>Discharge Over Current Relieving Over Current Protecion Recovery Condition / / Disconnecting load <br>Discharge Current Max. Continuous Discharge Current Ioc - - - 20 A <br>Short Circuit Protection Delay Time Tshort <br> <br>300 600 μS <br> <br>Recovery / / Disconnecting load <br>Internal Resistance Discharge Circuit Internal Resistance(mΩ) Ron1 <br>/ / 20 mR <br>Self Power Consumption Working Mode Icc1 <br>/ 20 50 μA <br> <br>Size: 65*33*7mm / 2.56*1.3*0.27" <br>Wire Length: 350mm / 13.77" <br> <br> <br>Package list: <br>1 x Protection Board <br> <br> <br>Note: <br>Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.<br>1、The protection board is for 7 series 18650 li-ion 3.6V/3.7V batteries. <br>2、Stable various protective functions for charging and discharging, such as accurate overcharge protection, over-discharge protection, over current protection and short circuit protection <br>3、Batteries core hardware balanced processing, proper balanced current, reasonable balanced heat emitting, does not affect performance of battery pack <br>4、It has aluminum sheet that would enhance heat dissipation for MOS tube, and extend the service life of MOS tube <br>5、Low quiescent power consumption, it can save energy.