🔋 Introduction
Choosing between lithium and lead-acid batteries is one of the most important decisions in energy storage.
Let’s compare them from a cycle life + DOD perspective.
📊 Key Comparison
| Feature | LiFePO4 | Lead-Acid |
|---|---|---|
| Cycle Life | 4000–6000 | 300–800 |
| DOD | 80–100% | 50% |
| Lifespan | 10–15 years | 2–5 years |
| Maintenance | Low | High |
🔍 Depth of Discharge Comparison
- LiFePO4 → can safely use most capacity
- Lead-acid → must limit to 50%
👉 This doubles usable energy for lithium
💰 Cost per Cycle
Even if lithium costs more upfront:
👉 Lifetime cost is much lower
📉 Example
- Lead-acid replaced every 3 years
- LiFePO4 lasts 10+ years
⚡ Performance Differences
- Lithium: stable voltage
- Lead-acid: voltage drops quickly
💡 Conclusion
👉 LiFePO4 is the better choice for:
- Solar storage
- Telecom
- UPS