Description
48V Polly / 60V / 72V 40AH Down‑Tube E‑Bike Battery – 52V 80A BMS, 21700 Lithium‑Ion, 2000W Power
Upgrade your electric bike with the high‑performance 48V Polly 60V 72V 40AH Down‑Tube Battery. Engineered with premium 21700 lithium‑ion cells and a robust 80A BMS, this battery delivers reliable power for rides up to 2000W, giving you longer distances, faster acceleration, and peace of mind on every trail.
Key Highlights
- Versatile voltage options: 48V, 60V, 72V – fits most e‑bike systems.
- Massive 40 Ah capacity for extended range (up to 120 km depending on usage).
- High‑current 80A BMS ensures safe, stable performance under heavy loads.
- Built‑in 21700 lithium‑ion cells provide superior energy density and longer lifespan.
- Compact down‑tube design (52V form factor) for clean integration and balanced bike handling.
- Rated for 2000W output – perfect for mountain, commuter, and off‑road e‑bikes.
- Original Cham Rider quality with rigorous safety testing.
Why Choose This Battery?
Whether you’re tackling steep hills or cruising city streets, this battery gives you the power you need without compromising safety. The integrated 80A BMS protects against over‑charge, over‑discharge, short circuits, and temperature spikes, extending the life of the cells and keeping you safe.
Technical Specifications
- Nominal Voltage: 48 V / 60 V / 72 V (selectable)
- Capacity: 40 Ah
- Continuous Discharge Current: 80 A (BMS)
- Cell Type: 21700 Lithium‑Ion
- Power Rating: 2000 W
- Form Factor: Down‑tube, 52 V compatible housing
- Operating Temperature: -10 °C to 60 °C
- Weight: Approx. 7.8 kg
- Connector: Standard XT60 (compatible with most e‑bike controllers)
Compatibility
This battery is compatible with a wide range of e‑bike models that accept 48V, 60V, or 72V systems and feature a down‑tube mounting point. Ideal for:
- Mountain e‑bikes
- Commuter and city e‑bikes
- Fat‑tire and off‑road electric bikes
- Custom DIY e‑bike builds
Installation & Maintenance
Designed for easy installation, the battery slides into the down‑tube slot and locks securely with the included mounting brackets. For optimal performance:
- Charge with a compatible 48‑60‑72 V charger.
- Avoid deep discharge below 30 % whenever possible.
- Store in a cool, dry place when not in use.
- Inspect connectors regularly for wear.
Boost Your Ride Today
Experience the freedom of longer rides, higher speeds, and reliable power with the 48V Polly 60V 72V 40AH Down‑Tube E‑Bike Battery. Order now and power your adventures with confidence!






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