The Garmin Piggyback Battery Charger Pack gives your Edge 1030 unit up to a 40 hour run time, perfect for those extra long days out in the saddle. The external battery pack plugs directly into the Edge 1030 cycling computer, giving up to 24 hours of additional battery life. It even fits into the new streamlined bike mount. You can also charge on the go by connecting the Garmin Charge power pack to any compatible fitness device with an additional cable — including wearables and other cycling computers. Just connect the power pack with a USB charging cable so you can stay in the action and get the most out of your activities. Garmin Piggyback Battery Charger Pack  Features Provides upto 24 hours of additional battery life for the Edge 1030 Plugs directly into the back of the Edge 1030 Fits into the new streamlined bike mount. USB connection Garmin Charge Power Pack Compatibility To use the Garmin Charge Power Pack with another Edge device you'll need the Cycling Combo Mount & Battery Pack USB cable. Only directly compatible with the Edge 1030.