The TeleType Bluetooth GPS Receiver operates on three AAA batteries. You may use the rechargeable batteries included with the package, or you may use other rechargeable batteries or regular alkaline batteries. Alkaline batteries are NOT rechargeable, and cannot be used with the charger provided. DO NOT place the Bluetooth GPS receiver on the charging stand if you have standard alkaline batteries in your unit.
Alternately, you can use the power adapter for your Bluetooth GPS unit. When using the power adapter, make sure that the power switch is set to "Off". Only then will your Bluetooth GPS unit use power from the adapter and not the batteries. The "On/Off" switch refers to battery usage and does not refer to the powering of the Bluetooth GPS unit as a whole.