Garmin Edge 1030 External Battery PackThe External Battery Pack gives you an extra 24 hours of cycling time. Plug the battery pack directly into your Edge 1030 when your batteries running low for another whole day of cycling performance expertise. The pack is also really easy to recharge with a USB recharge cable.FeaturesAdds an additional 24 hours of battery lifeEasy to useRecharge with USB chargerBuy Garmin Cycling Computers from Chain Reaction Cycles, the World's Largest Online Bike Store.