Other Battery capacity

[gsusser]

My iPhone 7 has a capacity reading of 86%. Is this good? At what point should a battery be replaced?
I ask because I have it up for sale and a potential buyer is trying to get the price down by saying he'll have to replace the battery.

 

[peterpayne]

It's not that good and yeah, he's gonna have to replace it soon. Under 80% is when it gets really bad and a replacement is recommended.

 

[gsusser]

Thanks.

 

[tonybarnaby]

80% is considered end of life for a lithium ion battery. I’d replace it ASAP because I think a LOT of people will try to get in to get a new one November and December.

 

[EugW]

There is a line below that. What does it say under peak performance?

86% is not good, it's just OK, but it's worse if your battery cannot support peak performance.

In any case, yes, you do need a new battery soon.

 

[gsusser]

There is a line below that. What does it say under peak performance?

I made a mistake, it's 88%.
Under peak performance: Your battery is currently supporting normal peak performance.

 

[now i see it]

Give him a $29 discount. That's how much a new battery costs. Or you take it to Apple to get the battery replaced and then sell it (maybe for more). Having a brand new battery in an iPhone for sale is a plus.