How to charge ebike battery without charger?

It is not recommended to charge an eBike battery without a charger as it can be dangerous and can harm the battery. Using a charger that is not designed for the specific battery can also damage the battery and reduce its lifespan. If you do not have a charger for your eBike battery, it is recommended to purchase a compatible one from the manufacturer or an authorized dealer. Additionally, make sure to follow the manufacturer's guidelines for charging and maintaining the battery to ensure its longevity and optimal performance.