Unique Gomadic Portable Rechargeable Battery Pack designed for the Garmin GPSMap 62 - High Capacity Gomadic charger that fits in your pocket Integrated circuitry tailors output voltage and charging current to exact specification of the Garmin GPSMap 62 (accurate to 0.1v). Specification: Internal Battery (7800mAh lithium polymer), Input port (microUSB), Output Port (Standard USB), Onboard Circuit Design (Garmin GPSMap 62 Specific), Dimensions (2.75 X 3.25 X 0.75 inches), TipExchange enabled (Yes) Very easy to operate. Simply connect Garmin GPSMap 62 , press activation button on pack, and charging begins. Quick start guide included. Charging kit includes: Rechargeable Lithium Battery Pack, USB input/output cable, Garmin GPSMap 62 Charging Connection, and Battery Pack input connection. Continue to use your Garmin GPSMap 62 for hours OR recharge it on the go without being tethered to a wall outlet