🔋 Introduction

Want to know how long your battery will last?

👉 Use this battery cycle life calculator to estimate lifespan based on:

• Depth of Discharge (DOD)
• Daily usage
• Cycle life

---

🧮 Basic Formula

Battery Lifespan (years) = Total Cycles ÷ Cycles per Year

---

📊 Step-by-Step Calculation

Step 1: Identify Cycle Life

Example (LiFePO4):

• 80% DOD → 5000 cycles

---

Step 2: Determine Usage

• 1 cycle per day → 365 cycles/year

---

Step 3: Calculate Lifespan

👉 5000 ÷ 365 ≈ 13.7 years

---

📈 Example Scenarios

Solar System

• DOD: 80%
• Cycles: 5000

👉 Lifespan: ~13–14 years

---

Backup System

• 50 cycles/year

👉 Lifespan: can exceed 15–20 years

---

⚠️ Important Notes

• High temperature reduces lifespan
• Poor BMS reduces cycles
• Deep discharge reduces life

---

💡 Pro Tip

👉 Lower DOD = longer lifespan