4S 40A Li-ion Lithium Battery Charger Protection Board 18650 BMS 11.1V 12.6V/14.8V 16.8V Enha

This battery type capacity indicator module display shows the display is more intuitive and more beautiful. A wider range of applications, nickel-metal hydride batteries, 18650 and polymer lithium battery packs, lead-acid storage, electric vehicle batteries, electric equipment can be used.

This display has a reverse connection function, even if the positive and negative connection will not burn. To use the display just connect the positive and negative terminals of the display board to the positive and negative terminals of the battery under test. The digital tube will display the real-time battery power.

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