Battery Health down to 88% (376 cycle count) in 6 months
Hi! I'm currently frustrated with my iphone 15 rn. Its down to 88% battery health with just 376 cycle counts. I bought it last November 2025. Is that normal? I rarely charge my phone below 20 and quickly unplugs it after it fully charges to a hundred.
If you're charging your phone up to 100% each time you charge, that's probably the cause. Ideally, you'll want to charge your battery up to 80%, and stop there. There's a setting to do just that.
From Settings, go to Battery -> Charging. Then, consider these settings.
Optimized Battery Charging - This will control when your charge goes to 100% based on your activity. Holding that 100% charge puts a lot of strain on the lithium battery, so you'll want to reach 100% only when necessary.
Charge Limit - This is better, because it will prevent you from going passed a specified percentage. 80% is a sweet spot. I'm up to over 160 charges, and still have 100% battery health on the iPhone 16.
Charging it up to 100% repeatedly will be a fast way to reduce the life of any lithium battery. Even laptops now have a feature to limit charges to 80% by default.
Hope it helps! Your next iPhone battery will last much longer at 100% if you limit max charges.
Work phone - 164 cycles
Personal phone - 249 cycles (usually gets a top-up mid-day)
So, what's being taken out of context? And, what are we disagreeing on?
I'm happy to help anyone who wants to learn about things. Take care,
The resident Lobster around these parts.
iPhone 15 battery health at 88% after 6 months
