Batteries And Charger
Replacement and second batteries and chargers for EUNORAU, Revi Bikes and Rattan e-bikes. Match the voltage, connector and mount to your bike before you order, and if you're unsure, send the Vortex Ride Desk your bike model and we'll confirm the fit. Every order ships free. Learn how to get more miles per charge in how far a fat tire e-bike can go, and keep your battery healthy with how to store an e-bike for winter.
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How to Choose the Right E-Bike Battery or Charger
A battery or charger only works if it matches your bike exactly. Check these three things before you order.
1. Voltage
Match the battery voltage to your bike: 48V, 52V or 72V. A different voltage can damage the controller or simply won't work.
2. Connector and mount
Batteries are shaped for a specific frame mount, and chargers use a specific plug, such as a 3-pin plug or a DC connector. Look for your bike's model name in the product title.
3. Capacity
Amp-hours (Ah) times volts gives watt-hours, the real size of the battery. A 48V 15Ah battery holds about 720Wh. More watt-hours means more range. Read how far a fat tire e-bike can go to estimate yours.
Chargers: 2A vs 3A
A higher-amp charger refills the same battery faster. Use only a charger listed for your bike and battery.
Battery Care
Store batteries indoors, away from extreme cold and heat, and partly charged for long breaks. Our guide to storing an e-bike for winter covers the details.
Frequently Asked Questions
Not sure which battery fits?
Send the Vortex Ride Desk your bike's make, model and year, and we'll confirm the right battery or charger before you order.
Can I return a battery?
A battery that has been charged can't be returned for change of mind because of lithium-ion safety rules, but a defective battery is covered under warranty. Confirm fit before you charge it.
