How much is my device worth
What Is iPhone Battery Health (and How It Affects Resale Value)
Updated 21 June 2026
If you're selling an iPhone, "Battery Health" is one number that directly moves the price. Here's what it means, what counts as good, and whether it's worth replacing before you sell.
What Battery Health actually measures
Every rechargeable battery wears down with use. Apple's Maximum Capacity figure tells you how much charge your battery can still hold compared with when it was new:
- 100% — as-new capacity.
- 90% — holds 90% of its original charge.
- and so on.
A lower number means a more worn battery that runs down faster and is closer to needing a replacement.
How to check it
Settings > Battery > Battery Health & Charging > Maximum Capacity.
What counts as good
| Maximum Capacity | What it means for resale |
|---|---|
| 85%+ | Healthy — little to no impact on value |
| 80–85% | Fine — minor impact |
| Below 80% | Near replacement — lowers the value |
Apple itself treats 80% as the threshold where a battery is considered worn, which is why it's the line that matters for resale.
How it affects your trade-in value
A worn battery is a cost the next owner inherits, so a low Maximum Capacity reduces the price. A healthy battery keeps your iPhone at full value. That's why it's one of the things you'll be asked about when you get a quote — reporting it honestly means an accurate offer with no surprises at collection.
Should you replace the battery before selling?
Usually no. A battery replacement often costs more than the value it adds to a resale, so you rarely come out ahead. The smarter move is to simply report the real figure and let the quote reflect it.
Ready to sell?
Check your Maximum Capacity, then get your instant quote. For everything else that sets your iPhone's price, see how much is my iPhone worth in the UAE.
Frequently asked questions
What is a good iPhone battery health percentage?
Around 85% or higher is healthy and has little to no impact on resale value. 80–85% is still fine with only a minor effect. Below 80% means the battery is near the point of replacement, which lowers the value.
How do I check my iPhone battery health?
Go to Settings > Battery > Battery Health & Charging and look at Maximum Capacity. It shows a percentage compared with when the battery was new. Lower numbers mean more wear.
Does battery health affect how much my iPhone is worth?
Yes. A worn battery is a cost the next owner inherits, so a low Maximum Capacity reduces the trade-in value. A healthy battery keeps your iPhone at full value. Check it before getting a quote.
Should I replace my battery before selling my iPhone?
Usually not — the cost of a replacement often exceeds the value it adds to a resale, so you rarely come out ahead. Just report the real battery health when getting your quote and price it accordingly.