The V4 solar charger battery is the all in one for smartphone lovers. The batteries with stow away micro-usb and USB cables. You can use these cables to charge the charger's battery, charge your micro-usb Compatible phone, or even sync your phone. The charger also has a USB port to plug in any other type of charge cables. The built in solar panel will help to supplement the batteries charge to keep you at 100%. the attached key chain means you can take this charger anywhere, just clip it on your bag or purse.
MixBin Electroplated Micro-Usb Solar Charger for All - Black - B06WVYGKFQ