Philips HX9992/02 Manual page 19

If you see battery indication blink amber 3 times and hear 3
tones high to low, then the feature has been deactivated.
Charging and battery status
Charging on charger base
2
1
1 Plug the USB cord of the charging base into the USB
wall adapter and plug the wall adapter into an
electrical outlet.
2 Place the charging stand (clear cover) on the charging
base.
3 Place the toothbrush handle on the charger.
a To indicate charging has started successfully, the
toothbrush will beep twice and the lights will
illuminate in an upward motion.
b While charging the battery indicator blinks in
white.
4 Leave the toothbrush on the charger until it is fully
charged. The battery light will turn off (stop blinking)
when the handle has finished charging.
Note: It may take up to 16 hours to fully charge your
Sonicare toothbrush.
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English