FREE: 5000 mAh WIRELESS BATTERY WITH WIRELESS RECHARGE BASE This mid-capacity battery works wirelessly based on the Qi standard . It allows you to recharge your phone by induction (Your phone must be equipped with wireless recharging). Extremely easy to use. When you’ve finished charging your phone just place the battery on the base for automatic recharging . You won’t need to think about recharging your external battery; it’ll always be ready to use.