My new phone, and especially my new iPad, seem to have decent battery life. Charging has not been much of a problem yet. I see a lot of people using low wattage chargers in their cars, such as the 7.5 watt induction models. This might make sense if you are going to upgrade every year, or every other year. But, I buy my devices and use them longer than many people. I have a 4 year old Motorola Android phone and the battery works decent even now. Is it really worth it to have a car charger cycling the battery to add a tiny bit of charge here and there if you wish to keep the phone longer?