15000mAh Solar Battery Charger BigBlue Solar Charger with Dual USB-A Port, Portable Solar Power Bank with IPX4 Waterproof, Solar Panel Battery Pack with Flashlight for Camping or Hurricane(Light Blue)Large 15000mAh Capacity: this solar battery charger equipped with SunPower solar panel could recharge by solar or outlet. But solar charge is not recommended as primary recharge source as it's subject to sunlight intensity and solar conversion rate, which may take a long time to charge fully. Dual USB A Port: This solar power bank with two iSmart powered 2. 1A ports which can simultaneously charge two devices multiple times. 4. 8 charges to iPhone 7;