Replacement Battery for Whirlwind C4 Folding Electric Bike
🔋 Genuine Whirlwind Replacement Battery - Keep your Whirlwind C4 e-bike running with this official replacement lithium-ion battery pack. Perfect as a spare for extended rides or to replace an aging battery.
✅ Compatible With:
- Whirlwind C4 Folding Electric Bike - All models and variants
- Model GNT3 battery specification
- Direct replacement for the original battery supplied with your bike
⚡ Why You Need a Spare Battery:
- Double Your Range - Carry a spare battery and extend your riding distance to 70 miles total
- No Downtime - Swap batteries instantly instead of waiting 3-4 hours for charging
- Replace Worn Batteries - Restore full performance if your original battery has degraded over time
- Removable Design - Easy to swap and charge separately from the bike
📐 Technical Specifications
| Model | GNT3 |
| Battery Type | Lithium-ion (Li-ion) |
| Rated Voltage | 36V |
| Charge Voltage | 42V |
| Nominal Capacity | 5.2Ah |
| Stored Energy | 187.2Wh |
| Charging Time | 3-4 hours (with standard charger) |
| Range Per Charge | Up to 35 miles (depending on terrain and assist level) |
| Removable | Yes - charge on or off the bike |
🎯 Perfect For:
- Long-distance commuters who need extended range
- Replacing an old or degraded battery
- Having a backup battery ready for spontaneous rides
- Cyclists who want to avoid mid-ride charging stops
📦 What's Included
- 1 x Whirlwind C4 Replacement Battery (36V 5.2Ah)
- Battery key (if applicable to your model)
⚠️ Important Notes
- This is the battery ONLY - charger sold separately
- Compatible exclusively with Whirlwind C4 electric bikes
- Store in a cool, dry place when not in use
- Do not expose to extreme temperatures
🚴 Don't Have a Whirlwind C4 Yet?
Check out our Whirlwind C4 Folding Electric Bike - the lightweight, portable e-bike that this battery powers. At just 16kg with a 35-mile range, it's perfect for urban commuting!
🚚 Fast UK Delivery | ✅ Genuine Whirlwind Part