USAGE NOTES:<br> 1: Please wire strictly according to the wiring diagram,can not short circuit!<br> 2: After the wire is connected, it needs to be charged first then output.<br> 3: When connecting 4 batteries in series, please make sure that the voltage of each battery is the same. If not, please full each battery separately and use it in series. In the discharge test, the battery with the fastest voltage drop was the bad battery.<br> 4.Do not mix good and bad batteries together! The capacity/internal resistance of the 4 batteries is as close as possible (2 good batteries + 2 bad battery = 4 bad batteries). <br> The lithium battery protection board parameters:<br> Maximum operating current: 100A <br> Maximum instantaneous current: 120A<br> Overcharge protection:<br> Overcharge detection voltage: 3.75±0.05V;<br> Overcharge protection delay: 1300ms;<br> Overcharge release voltage: 3.60±0.05V;<br> Over discharge protection:<br> Overdischarge detection voltage: 2.1±0.08V;<br> Over-discharge detection delay: 145seconds;<br> Over-discharge release voltage: 2.3.±0.1V;<br> Overcurrent protection:<br> Overcurrent protection detection voltage: 200mV;<br> Overcurrent detection delay: 20mS;<br> Overcurrent protection current: 120±10A;<br> Overcurrent protection release condition: disconnect the load;<br> Quiescent current: less than 20uA<br> Internal resistance: less than 20mΩ<br> Charging voltage: 14.8V-16V<br> Charging current: 10A Max<br> Working temperature: -40 - +50°C<br> Storage conditions: -40 - +80°C<br> Short-circuit protection: Trigger condition: External load shorted. Release condition: disconnect the load.<br> Size: 56*48*4.0mm<br> Wiring instructions: P +: Protection board output positive;<br> P-: Protection board output negative;<br> B +: Battery positive<br> B-: Battery negative;<br> C-: Charger negative;<br> C +: Charger positive;<br> <br> Package Included:<br> 1pcs NOYITO 100A 4S 3.2V Lithium Iron Phosphate Battery Protection Board <br>