At least 1 BM S is required. We did not connect the negative output of the 3S without BM S including 3S 4P XT60 plug in the design it needs to use the front copper socket and ribbon cable to connect 3S BM S for output.BM S can provide charge and discharge equalization function for the entire system multiple battery boxes at the same time. 3S charge needs 12.6V charger. It is recommended that the charging current of each layer should not exceed 2A otherwise the battery may become hot for example choose 2A charger for only one layer and 4A charger for two layers. Do not put on the metal table top to use pay attention to insulation do not short circuit. The battery faces up the circuit board all the batteries face the same cannot inteR Leave.The direction of battery installation is subject to the mark on the cirucit boardnot the mark on the plastic battery box. Do not connect the wrong pow er supply the circuit board is marked pay attention to the observation. If you use a So lar panel to charge the battery you need to bring your own voltage control module. If the output voltage of the So lar panel is too low you need to increase the boost module. If the output voltage of the So lar panel is too high you need to increase the buck module.
Type: 3S 1P BM S Model Number: Dog-2 colour:Black Material:ABS size:79 x 89 x 23mm
Package Contents: 1 x Battery Box
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