The PowerBear replacement battery gave new life to my crappy old phone. Note: I'm glad I bought this battery when I did. It's not available now , at least not on Amazon MX. For years I hadn't had a mobile phone that worked when a friend arranged to have her old Samsung Galaxy S5 muled to me here in Mexico City. Google Maps helps massively in getting to know a new place, especially a city as big as this one. Although I was so, so grateful for this new tool, the phone's battery would die after a couple hours. Fully-charged before I left for work, the battery indicator read 40% by the time I arrived 37 minutes later. I didn't even use it on the way! Using Google Maps drained the battery in about 30 minutes. When I would take a photo, the battery would drain instantly and I'd have to recharge and restart. It didn't help to buy a Samsung replacement battery from a shop in Plaza De La Tecnología, either. So at less than $100 Mexican pesos, this Pow