Ever wondered how far your electric motorcycle can go on a single charge?
Whether you’re planning a long ride or just curious, here’s an easy formula to calculate your e-bike’s range—no manual required!
Let’s break it down step by step.
The Simple Range Formula
To estimate your e-bike’s range, use this equation:
Range (km) = (Battery Voltage × Battery Capacity × Speed) ÷ Motor Power
Let’s understand each part:
- Battery Voltage (V): This is like the “pressure” of your battery. Common voltages are 48V, 60V, or 72V.
- Battery Capacity (Ah): Think of this as the “fuel tank size.” A 20Ah battery can deliver 20 amps of current for 1 hour.
- Speed (km/h): Your average riding speed.
- Motor Power (W): The motor’s energy consumption. Higher power means faster acceleration but shorter range.
Step-by-Step Examples
Example 1:
- Battery: 48V 20Ah
- Speed: 25 km/h
- Motor Power: 400W
- Calculation:
- Step 1: Multiply Voltage × Capacity → 48V × 20Ah = 960
- Step 2: Multiply by Speed → 960 × 25 km/h = 24,000
- Step 3: Divide by Motor Power → 24,000 ÷ 400W = 60 km
Why Real-World Range Might Differ
The formula gives a theoretical estimate under perfect lab conditions. In reality, your range depends on:
- Weather: Cold temperatures reduce battery efficiency.
- Terrain: Hills or rough roads drain the battery faster.
- Weight: Carrying heavy bags or a passenger shortens range.
- Riding Style: Frequent stops/starts use more power than steady cruising.
Example: If your calculated range is 60 km, expect 50-55 km on a windy day with hills.
Battery Safety Tip:
Always match the BMS (Battery Management System) to your controller’s limit.
- If your controller’s max current is 40A, use a 40A BMS.
- A mismatched BMS can overheat or damage the battery.
Quick Tips to Maximize Range
- Keep Tires Inflated: Proper pressure reduces rolling resistance.
- Avoid Full Throttle: Gentle acceleration saves power.
- Charge Smartly: Store batteries at 20-80% charge for longer life.
Post time: Feb-22-2025
