We designed our universal battery charger to make it easy always to have a fully charged battery to last through the day. The charger is universal and can charge most smartphone batteries externally. Just place the adjustable charging pins on the pins of the battery and start charging. The charger can also charge a second device regularly via USB; you can charge most devices via USB and Lightning included Apple, Android, Windows and more. Just carry the second battery with you to swap out whenever you need a recharge.