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Here’s the detailed information about 48V 40Ah in terms of voltage, capacity, energy, and typical applications:
1. Voltage (48V)
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Common standard for electric bikes (e-bikes), scooters, small EVs, golf carts, and some energy storage systems.
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Higher voltage = more power and efficiency compared to lower voltages (e.g., 24V or 36V).
2. Capacity (40Ah)
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Amp-hours (Ah) measure the battery’s charge capacity.
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40Ah means the battery can deliver:
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40A for 1 hour,
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20A for 2 hours,
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1A for 40 hours, etc.
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3. Energy (Wh)
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Watt-hours (Wh) = Voltage (V) × Capacity (Ah)
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48V × 40Ah = 1,920Wh (~1.92 kWh).
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This indicates how much energy the battery can store.
4. Range Estimation (for E-Bikes/Scooters)
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Depends on motor power, terrain, and rider weight.
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Example: A 500W motor using a 48V 40Ah battery:
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Theoretical range:
1,920�ℎ500�=3.84 hours of runtime
At 25 km/h (15.5 mph), range ≈ 96 km (60 miles).
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Real-world range: ~50–80 km due to inefficiencies.
5. Battery Type
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Lithium-ion (LiFePO4 preferred):
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Lightweight, long cycle life (~2,000 cycles).
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Common in e-bikes/scooters.
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Lead-acid (rare for 40Ah at 48V):
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Cheaper but heavier and shorter-lived.
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6. Charging Time
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Lithium-ion:
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With a standard 5A charger: 40�ℎ5�=8 hours.
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Faster chargers (e.g., 10A) reduce time but may shorten battery life.
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7. Weight
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Lithium-ion: ~15–20 kg (33–44 lbs).
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Lead-acid: ~25–30 kg (55–66 lbs).
8. Applications
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E-bikes/scooters: Extended range for commuting.
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Golf carts/Utility vehicles: Power for longer use.
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Solar storage: Off-grid or backup power.
9. Price Range
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Lithium-ion: $300–$500 (varies by brand, BMS quality).
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Lead-acid: $100–$200 (but less efficient).
10. Lifespan
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Li-ion: 5+ years (with proper care).
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Lead-acid: 1–2 years.
Let me know if you’d like help calculating range for a specific motor or comparing battery types!
