LG TONE Free FP8 UVnano True Wireless In-Ear Headphones (Charcoal Black) - Manual (Page 17)

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Battery Status Indicator
Status Description
Bluetooth Search Mode The battery status indicator flashes in blue.
Battery below 20%
The battery status indicator turns on and
off in red.
Battery 20% - 80%
The battery status indicator turns on and
off in yellow.
Battery 80% or more
The battery status indicator turns on and
off in green.
When there is a problem
while charging
The battery status indicator flashes in red.
Charging
(charger connected)
The battery status indicator turns on in red.
Charging complete
(charger connected)
The battery status indicator turns on in
green.