Indicatore di livello batteria 3.7V-29.4V 1S-7S 18650 Lipo Li-ion capacità tester misuratore

Release your finger, the LED light will be off after a delay of 3-10 seconds, no power consumption at all when static. The first power indicator is red. Release the finger, the LED light will be off after 3-10 seconds delay, no power consumption at all when static.

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