How to Check Your iPhone's Battery Health Before Trading In
Battery health is a major factor in trade-in value. Learn how to check it and what the numbers mean.
DepxTech Team
Published on February 10, 2026
Why Battery Health Matters
Battery health is one of the first things inspected during a trade-in evaluation. A phone with 95% battery health can be worth $50-80 more than the same model at 80%.
How to Check Battery Health
iPhone
- Open Settings
- Tap Battery
- Tap Battery Health & Charging
- Look at Maximum Capacity
What the Numbers Mean
- 95-100%: Excellent — full trade-in value
- 90-94%: Very Good — minimal deduction ($10-20)
- 85-89%: Good — moderate deduction ($20-40)
- 80-84%: Fair — noticeable deduction ($40-70)
- Below 80%: Apple recommends replacement — significant deduction ($70-120)
Performance Capability
Below Battery Health, you'll also see a Performance Capability section:- "Peak Performance Capability": Your battery is functioning normally
- "Performance Management Applied": Your phone has been throttled due to battery degradation
- "Performance management has been turned off": You've disabled throttling
How Battery Health Affects Trade-In Pricing
At DepxTech, battery health is factored into your quote through our condition assessment:
The Math
For an iPhone 15 Pro (128 GB) in otherwise excellent condition:
- 95%+ battery: $480 (full value)
- 90% battery: $460 (-$20)
- 85% battery: $440 (-$40)
- 80% battery: $410 (-$70)
- 75% battery: $370 (-$110)
How to Maintain Battery Health
If You're Planning to Trade In Soon
These tips won't dramatically improve your current health, but they'll prevent further degradation:
- Avoid extreme temperatures — heat is the #1 battery killer
- Use Optimized Battery Charging (Settings > Battery > Battery Health)
- Avoid wireless charging when possible — generates more heat
- Keep charge between 20-80% for daily use
- Remove your case while charging if it traps heat
The 80% Charge Limit
iOS 17+ offers an 80% charge limit option. While this extends long-term battery health, it's usually not worth enabling if you're trading in within a few months.Should You Replace Your Battery Before Trading In?
The Cost-Benefit Analysis
Apple battery replacement costs:
- iPhone 15/16 series: $99
- iPhone 14 and earlier: $89
- Current quote with 78% battery: $370
- Estimated quote with 100% battery: $480
- Difference: $110 — worth the $99 replacement
Pro Tips
- Check battery health before listing — know your number
- Don't lie about battery health — it's easily verified during inspection
- Charge to 50% before shipping — this is the safest level for lithium batteries in transit
- Check cycle count (via analytics data or third-party apps) — lower is better
Check Your Trade-In Value
Head to DepxTech and answer our quick condition assessment. We'll give you an instant quote that factors in battery health.
