Rayovac Weekender PS81 Rugged Waterproof Portable Power Bank with Powerful 2.4A Quick Charging Dual USB Output - 6,000 mAh Portable battery pack with 6,000 mAh capacity. Powered using a lithium-ion battery for reduced weight and increased safety Dual USB ports to charge multiple smartphones, tablets, and other portable devices at the same time; this power bank will fully charge an Apple iPhone 6s from dead to 100% three times Features dual USB ports to charge two devices simultaneously (2.4A + 1.0A) Rugged, durable, and water resistant power pack to recharge your devices in rough situations Power overload protection; USB charging cable included