There's no need to bring your cycling adventure to a screaming halt on account of flat batteries. Take it to the limit with the External Battery Pack - a joint initiative from powermonkey and eXplorer, given the GARMIN seal of approval. With three ways to charge the battery pack you will be out of excuses if your Garmin runs out on tht overland adventure race. - Features - Extra LifeThere's no excuse when you're out of juice. On a full charge you can get up to an extra 20 hours out of the included battery pack. Threefold PathSolar, Mains or USB - there's just no reason not to knuckle-down and press on. Compact, PortableComes with an adjustable Velcro strap, allowing you to provide your solar cell or battery pack the most secure, ideal placement. ResilientExposed components (solar panel, battery pack) come are rubberised to soften collision and reduce wear. - Compatibility - Dakota 10Dakota 20Edge 500Edge 800Forerunner 110Forerunner 205Forerunner 210Forerunner 305Forerunner 310XTForerunner 405Forerunner 405CXForerunner 410Forerunner 610Forerunner 910XT GPSMAP 62GPSMAP 62sGPSMAP 62stOregon 200Oregon 300Oregon 400cOregon 450Oregon 450tOregon 550 - Includes - External Power Pack (mini-USB)Folding Solarmonkey Solar PanelFemale USB2 ConnectorFemale mini-USB to 3.5 x 1.1 ConvertorBike Bracket (with Velcro Strap)Universal Mains Adaptor