Ensure that your smartphone or tablet is ready when you need it with this Tzumi PocketJuice 3508BB-2 portable charger, which features 4000 mAh of power to charge your device up to 2 times before needing a recharge.
I've had power sources before to charge my iPhone, and rarely have they charged it all the way through--this one charges my iPhone to 100% twice before having to recharge it! Great product!!!