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7.2V 7.4V 8.4V 2S Lithium Battery meter battery Fuel gauge

Installation, just open two 2MM screw holes, and the LCD display area 44 * 11.3, from the panel to install the inside out!

8615986775944 86755-86299563

Description

According to the battery discharge curve, the acquisition voltage, converted to percentage display 0% - 100%, 1% for a unit, the battery power is less than 0%, LED backlight flashing and off