I bought this battery originally for Pokemon Go, but now just for regular juicing to my phone. It is the PERFECT product. It maintains charge forever, I get four to five solid blasts of energy to fully recharge my iPhone, and it once got soaked at the bottom of my bag and still works flawlessly (which instigated this review). It works way better and longer than any of my friends' external batteries - and they spent more money. A must-have.