When charging your S1, a charging animation will appear on the battery icon. A flashing, fully charged icon indicates the S1 is completely charged.

A fully charged S1 provides at least 40 hours of usage. For optimal charging, use the original charging cable with a power source not exceeding 20W.

If your S1 isn’t fully charging or has a short battery life, try the following:
1. Use a different power supply and charging cable, then recharge the device.
2. Ensure your S1 firmware is updated to the latest version. Watch the firmware update tutorial here: ProTemp S1 Firmware Update

If the problem cannot be solved, please take a video of the charging progress and send it to [email protected], and we will confirm and solve it for you.