How the Tool Works
This tool tracks LiPo battery charge cycles in your browser’s localStorage and estimates remaining battery health/lifespan.
Health Calculation
Health % = Max(0, Round((1 - Cycles / MaxCycles) × 100))
MaxCycles = 300 (typical LiPo lifespan)Example
- Battery: 4S 2200mAh #1
- Cycles used: 90
Health = (1 - 90/300) × 100 = 70%At 70% health, the battery has ~210 cycles of life remaining.
Status Indicators
- Green (>50% health): Battery is healthy, continue regular use
- Red (≤50% health): Consider replacing; battery may show sag or reduced capacity
FAQs
1. What counts as one cycle?
One full charge-discharge cycle. For drones, each flight typically uses 1 cycle (discharge + recharge). Two half-flights + two half-charges = 1 full cycle.
2. How many cycles does a LiPo battery last?
Most LiPo batteries last 200-400 cycles depending on quality, usage, and care. Storing at the correct voltage (3.8V/cell) and avoiding over-discharge extends life.
3. Why track my battery cycles?
Tracking helps you predict when batteries will degrade. Old batteries have more voltage sag, reduced flight times, and increased safety risks (swelling, fire risk).
4. What are signs my battery is dying?
- Swollen/puffed cells
- Reduced flight time (20%+ decrease)
- Voltage sag under load
- Faster self-discharge
- Heat during charge
5. How can I extend my battery’s life?
- Store at 3.8V/cell (storage charge)
- Never discharge below 3.3V/cell
- Avoid charging when hot
- Use balance charging
- Keep away from extreme temperatures
6. Do all LiPo batteries have the same lifespan?
No. Higher C-rating batteries and those from premium brands often last longer. Hard-case batteries are more durable but heavier.
7. Can I still fly with a degraded battery?
You can, but expect reduced flight time and performance. Replace batteries below 50% health or showing physical damage (swelling) to avoid in-flight failures.