If you want to buy a replacement battery for your Heybike electric bike, then it is worth noting that you must make sure that the battery you would like to buy is compatible with the model of your e-bike. Currently, our batteries are only compatible with the corresponding model of the e-bike. You may find that Heybike Mars and Ranger have the same voltage, but the Ranger's battery is taller than Mars', which makes it unable to install the battery on the e-bike.
On the other hand, even if you can buy a battery with the same parameters, such as voltage, there is a possibility of damage to Heybike's e-bike after installing those batteries due to the circuit design and the battery protection system being incompatible. Therefore, once you install a non-original or incompatible battery on your Heybike e-bike, your e-bike will NOT be covered by the Warranty.
For more details about the replacement battery, please check our product page: Heybike E-bike Battery Pack.
If there are any other questions, kindly please contact our customer support for help: firstname.lastname@example.org