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A **72V battery** is a key component for high-power electric bikes, scooters, or motorcycles, especially when paired with a **3000W /5000W motor**. Here’s what you need to know:
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### **1. Types of 72V Batteries**
| Type | Pros | Cons | Best For |
|————|——————————-|——————————-|——————————|
| **Li-ion (NMC)** | High energy density, lightweight | Expensive, needs BMS | Performance e-bikes, speed |
| **LiFePO4** | Long lifespan (2000+ cycles), safer | Heavier, lower energy density | Long-term use, reliability |
| **Lead-Acid** | Cheap, widely available | Heavy, short lifespan, slow charging | Budget builds (not ideal for 3000W) |
**Recommendation:** **Li-ion (NMC)** for best performance, **LiFePO4** for durability.
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### **2. Battery Capacity (Ah) & Range**
– **20Ah**: ~25-40 miles (3000W motor, mixed riding)
– **30Ah**: ~40-60 miles (better for longer trips)
– **40Ah+**: Extended range (heavy and expensive)
**Power Demand:**
– A **3000W motor @ 72V** draws **~42A** at full load (`3000W / 72V ≈ 42A`).
– Your battery should support **at least 50A continuous discharge**.
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### **3. Key Features to Look For**
✔ **High Discharge Rate** (≥50A continuous, ≥100A burst for acceleration)
✔ **Battery Management System (BMS)** – Protects against overcharge/over-discharge
✔ **72V Nominal Voltage** (Fully charged: ~84V, discharged: ~60V)
✔ **Good Cooling** (Avoid overheating in high-power setups)
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### **5. Charging & Safety**
– **Charger:** 72V Li-ion charger (usually **5A-10A** for faster charging).
– **Never charge unattended** (fire risk with cheap batteries).
– **Store in a dry, cool place** (avoid extreme temps).
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**6. Triangle battery Estimated Cost**
– **72V 20Ah Li-ion**: $260-$360
– **72V 30Ah Li-ion**: $350-$450
– **72V 40Ah+ (Big Capacity)**: $380+ 550
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### **Final Recommendation**
For a **72V 3000W setup**, a **72V 20Ah-30Ah Li-ion (NMC) battery** with **≥50A BMS** is ideal. If you prioritize longevity over weight, **LiFePO4** is a good alternative.
**Need help choosing a specific brand or model?** Let me know!
