If QQ-2 leaves the room where the charging base is located to clean in another room, it may have difficulty finding its way back to the charging base on its own. If it happens, you can use the remote control to direct and command QQ-2 back to charging base.
Or you can lift QQ-2 and manually sit QQ-2 unit on charging base and align three terminals on QQ-2 unit with metal contacts on charging base.
If necessary, you can bypass charging base to recharge battery. Unplug the AC charger from charging base and plug it to the DC Battery Charging Socket on the side of QQ-2. When you charge QQ-2 manually, the battery will be charged no matter QQ-2 is on or off.
Blue LED will be blinking when battery is recharging and be steady when recharge is complete.