First of all, we recommend buying a safe battery. We strongly advise you not to buy DIY batteries from online forums or online groups; these are often manufactured with no regard for safety, and their "heart" is usually cells from disassembly. City Lion batteries are assembled to the highest safety standards with the highest quality brand new LG M50LT cells, which are among the best in their class.

First of all, you need to determine parameters such as: the voltage of the driver (usually 24V, 36V, 48V, or 60V); The maximum physical size of the battery that will fit in the housing you have chosen/own - if you have difficulty determining this yourself, you can send us a model of the housing, or send us the whole housing, or even the housing with the battery, and we will verify; The type of plugs used in the battery housing on your e-bike.

Battery range depends on a number of factors, such as motor power, weight of the user, speed and riding style, air temperature, type of road surface, etc. For pedal assist, it can be assumed that each 1Ah of battery capacity should allow you to ride between 5 and 10 km with a 250W motor. If riding 'on the handlebars' with a 250W motor, each 1Ah will allow between 2 km and 4 km. The above figures are for 36V.

The LG M50LT cells we use are remarkable for their long lifespan. After 1,000 charge and discharge cycles, they keep 80% of their original capacity.

This depends on the casing you own/select. In the instance of popular bidon or rack housings, replacement is very simple and should not take more than a few minutes. However, in the instance of batteries that are permanently mounted in the frame of the e-bike, it may not be possible to replace them yourself, nor is it possible to fit a battery other than the original manufacturer's battery.

Yes, moreover, the BMS (Battery Management System) used in City Lion batteries has triple current protection: over-discharge protection; over-discharge protection; short-circuit protection.

Yes, you can, but will need special wiring for this. On the "Custom Batteries" subpage, submit information about your vehicle, and the location of your current and future battery - we will create a suitable battery for your needs based on these details.

The bike battery is charged via a standard DC 2.1/5.5mm charger plugged into the charging socket. When the LED lights up red, this means that the battery is still charging. When fully charged, the LED will turn green. The charger must be purchased separately.

For add-on batteries it is usually a maximum of 6 working days. In extreme cases, the delivery time can be up to 10 working days. For other orders, the lead time is determined individually, but should not be more than 10 working days.

In contrast, the batteries are made by us in our manufacturing workshop in Warsaw, Poland. Most of the batteries are made for a specific order, so the time to dispatch takes a few days.