1. How long the E12A takes to charge?

A:  1. When using a DC 5V/ 2A USB charging adapter (recommended), a full charge takes about 3 hours. When using computer USB port(not recommended), a full charge takes about 8 hours. The current of the adapter is higher, the charging is faster. 2. LED pulsates in red while charging. The LED lights constantly when the battery is fully charged. Blinks in red if power is low when running.

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