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** Wide application: Includes nickel-metal hydride batteries, 18650 and polymer lithium battery packs, lead-acid storage, electric vehicle batteries and electric equipment.
** Easy to use: You just connect the positive and negative terminals of the display board to the positive and negative terminals of the battery under test.
** Digital color: Features outline red, display block blue. (When the battery is full ,it will be on entirely)
** Display electricity quantity: (Note: N represents battery quantity)
1. When battery voltage is over N*3.3V, it will illuminate 1 block electricity quantity.