I just got a Motorola Z3 Play phone and it came with a fast charger. It charges the phone really quickly, like 90% in 50 minutes or something like that. But what I know about charging electric bike and RC car batteries is that the slower you charge them the longer they will last. I was wondering if the same thing applies to phone batteries? I'm wondering if I should let the phone charge slowly especially overnight. I kept my last phone (Moto G 1st gen) for 6 years before upgrading to this one so I'm not one of those people that upgrades every year or two. I'd like this phone to last me at least 5 years.