UG LAND INDIA Feature Size: 56*45*4.0mm Short circuit protection: protection, delay self-recovery Test point description: S1 S2 short circuit P + P- will output voltage, indicating that all MOS protection is normal, plus a normally open temperature detection can extend the temperature protection. Note: The installation of electronic modules requires basic knowledge and requires a certain electronic professional foundation and hands-on ability. Please purchase carefully! Strictly follow the diagram wiring 0V (B-), 3.7V (B1), 7.4V (B2), 11.1V (B +), do not intentionally short circuit! After the line is connected, you need to charge it first to have output. When connecting 3 sets of batteries in series, please ensure that the voltage of each set of batteries is the same. If they are different, please fill each set of batteries separately and use them in series. In the discharge test, the battery with the fastest voltage drop is the poor battery. The battery will be hot during use, and the battery rate is not applicable. In this case, it cannot be used for a long time, and the battery will be damaged quickly. Do not mix good battery and poor battery! The capacity and internal resistance of the three groups of batteries are as close as possible! (The effect of 2 good batteries + 1 poor battery = 3 poor battery usage)