Gomadic High Capacity Rechargeable External Battery Pack suitable for the Garmin dezl 560 560LT 560LMT Specification: Internal Battery (7800mAh lithium polymer), Input port (microUSB), Output Port (Standard USB), Onboard Circuit Design (Garmin dezl 560 560LT 560LMT Specific), Dimensions (2.75 X 3.25 X 0.75 inches), TipExchange enabled (Yes) Integrated circuitry tailors output voltage and charging current to exact specification of the Garmin dezl 560 560LT 560LMT (accurate to 0.1v). Very easy to operate. Simply connect Garmin dezl 560 560LT 560LMT, press activation button on pack, and charging begins. Quick start guide included. Continue to use your Garmin dezl 560 560LT 560LMT for hours OR recharge it on the go without being tethered to a wall outlet Elegant, compact design is approximately the size of a standard deck of playing cards. Rugged exterior is built to last and backed by Gomadic Lifetime Warranty