PHONE REPAIR GLOSSARY / BATTERY & POWER / BATTERY CYCLE COUNT
Battery Cycle Count
Each full discharge and recharge of a phone battery counts as one cycle. Most phone batteries degrade noticeably after 500 cycles — but battery health percentage is the more useful number to watch.
What It Is
A battery cycle is one complete discharge of your battery’s total capacity. Charging from 50% to 100% twice counts as one cycle, not two. Each cycle causes a tiny amount of irreversible chemical degradation inside the battery cell.
Apple rates iPhone batteries to maintain at least 80% health through 500 full charge cycles. In Singapore’s climate, batteries used outdoors, on gaming sessions, or charged while the phone is in a case tend to accumulate heat damage that speeds up degradation beyond what cycle count alone would predict.
How to Check Your Cycle Count
iPhone: Settings → Privacy & Security → Analytics & Improvements → Analytics Data → find a file starting with “log-aggregated” — search for “BatteryCycleCount”.
Android: AccuBattery (free app) estimates cycle count from learned charge data.
| Cycle Count | Battery Condition (typical) |
|---|---|
| 0–200 | Relatively new — health should still be above 90% |
| 200–400 | Mid-life — check health percentage |
| 400–500 | Approaching Apple’s rated threshold — health likely 80–88% |
| 500+ | Replacement worth considering — check actual health % |
Related terms
- Battery Health — the more useful number to track
- Swollen Battery — what happens when a battery fully degrades
- Grade A Battery — what to expect from a replacement
People Also Ask
How many battery cycles is too many for a phone?
Most phone batteries show significant degradation after 500 cycles. Always check battery health percentage alongside cycle count — a phone used in Singapore’s heat may reach 79% health at fewer than 500 cycles.
Does the cycle count reset after battery replacement?
Yes. A new battery starts at 0 cycles. Battery health also resets to 100%.
Does charging to 80% instead of 100% reduce cycle count?
Yes. Partial charges count as fractions of a cycle. Keeping charge between 20–80% is the single most effective way to extend battery lifespan.
Further reading
- 5 Signs Your Phone Battery Needs Replacement
- How to Make Your Phone Battery Last All Day: 15 Proven Tips
