Stay off the beaten track for longer with the external power pack by Garmin. Designed specifically for Garmin's fitness¹ and outdoor devices, this water-resistant power pack houses a 2200 mAh lithium-ion battery capable of recharging 5 V devices while remaining robust, compact and lightweight enough for space and weight-conscious outdoor enthusiasts. Suitable for even the most demanding riders, the external power pack provides real power when you need it most — the added 20 hours of extra ride time on the Edge® 800 makes the combination ideal for everything from week-long touring holidays to 24-hour marathon¹ racers. Recharge the pack 3 ways. Use the included folding solar panel, which allows the external power pack to be recharged to 1/3 power in 5 hours and full power within 15 hours. Use the universal mains charger, which is compatible in more than 150 countries. Or use the USB to recharge in less than 7 hours. ¹External power pack cannot charge Forerunner® devices during a recorded activity. What's Included? External power pack with permanent mini USB connection Folding solarmonkey solar panel Female USB2 connector Female mini USB to 3.5 x 1.1 convertor tip Hook and loop strap to attach solar panel to rucksack, tent, etc. Bike bracket with hook and loop strap Universal mains charger 010-10644-02