zlacker

>>skille+(OP)
I feel like the elephant in the room is that there's no phone battery that's going to stay useful in anywhere close to that time frame, and replacing phone batteries is usually a losing proposition. I've tried, several times. Fake, low-quality batteries are rampant (usually degrading within weeks), and genuine ones are prohibitively expensive -- usually a significant fraction of the cost of a new phone.

>>wheels+B7
Apple will replace batteries for iPhone 5s and up, for $69-89 in the US. No issues with fakes or low quality.

People who want to do some work themselves can buy replacement kits from reputable part suppliers for $29-59.

Your problem only occurs if somebody wants to do the work themselves _and_ they think they can source the parts without assistance from a reputable part supplier.