GANDY 48V 40Ah battery

Here’s the detailed information about 48V 40Ah in terms of voltage, capacity, energy, and typical applications:

1. Voltage (48V)

• Common standard for electric bikes (e-bikes), scooters, small EVs, golf carts, and some energy storage systems.

• Higher voltage = more power and efficiency compared to lower voltages (e.g., 24V or 36V).

2. Capacity (40Ah)

• Amp-hours (Ah) measure the battery’s charge capacity.

• 40Ah means the battery can deliver:

  • 40A for 1 hour,

  • 20A for 2 hours,

  • 1A for 40 hours, etc.

3. Energy (Wh)

• Watt-hours (Wh) = Voltage (V) × Capacity (Ah)

• 48V × 40Ah = 1,920Wh (~1.92 kWh).

• This indicates how much energy the battery can store.

4. Range Estimation (for E-Bikes/Scooters)

• Depends on motor power, terrain, and rider weight.

• Example: A 500W motor using a 48V 40Ah battery:

  • Theoretical range:

    1,920�ℎ500�=3.84 hours of runtime500W1,920Wh​=3.84 hours of runtime

    At 25 km/h (15.5 mph), range ≈ 96 km (60 miles).

• Real-world range: ~50–80 km due to inefficiencies.

5. Battery Type

• Lithium-ion (LiFePO4 preferred):

  • Lightweight, long cycle life (~2,000 cycles).

  • Common in e-bikes/scooters.

• Lead-acid (rare for 40Ah at 48V):

  • Cheaper but heavier and shorter-lived.

6. Charging Time

• Lithium-ion:

  • With a standard 5A charger: 40�ℎ5�=8 hours5A40Ah​=8 hours.

  • Faster chargers (e.g., 10A) reduce time but may shorten battery life.

7. Weight

• Lithium-ion: ~15–20 kg (33–44 lbs).

• Lead-acid: ~25–30 kg (55–66 lbs).

8. Applications

• E-bikes/scooters: Extended range for commuting.

• Golf carts/Utility vehicles: Power for longer use.

• Solar storage: Off-grid or backup power.

9. Price Range

• Lithium-ion: $300–$500 (varies by brand, BMS quality).

• Lead-acid: $100–$200 (but less efficient).

10. Lifespan

• Li-ion: 5+ years (with proper care).

• Lead-acid: 1–2 years.

Let me know if you’d like help calculating range for a specific motor or comparing battery types!