Portable Charger Power Bank USB Battery Pack For iPhone 6, 5, 5S, 5C, 4S, 4, Samsung S-Series - iPhone 6/5/4, Samsung Adapters w/USB Cable - Cynphon JumpStart JS-2400 (Silver) For iPhone smartphones, the Cynphon JumpStart JS-2400 portable charger provides 1.5 times charge. The Cynphon JumpStart JS-2400 usb battery pack charges smartphone in approximately 1.5~2 hours (when phone is off and battery is not under load). Capacity: 2400 mAh; 5V, 1A. Even after 500 charge cycles, the power of the Cynphon JumpStart JS-2400 portable battery power pack still reaches to 85% of capacity. Sleek ellipsoid shape, reinforced aluminum shell and clear edging provides the look to match the technology of the best external battery pack Save up to 35 % off by checking our multi-unit discounts mentioned in the Special Offers and Product Promotions section below.