any car owners have more than one electric bike at home, and charging them every day is a common task for them. However, there are still many things that car owners need to pay attention to when charging, or they may cause irreparable losses.

I often find that many electric bike owners charge their bikes randomly, either by using roadside fast charging stations or by using the same charger for different bikes. This phenomenon of mixing chargers is quite common, and everyone knows it may not be good for the battery, but since it's not immediately apparent, they don't pay much attention.

What are the hazards of mixing chargers for electric bikes? What consequences might it cause? Let me explain.

Effect 1: Overcharging the battery, causing bulging and other issues.
Can overcharging occur even if you unplug the charger when the bike is fully charged? The answer is yes. If an electric bike has a 60V20AH battery, it should be paired with a 60V20AH charger. Some users may choose a faster or more powerful charger to save time.

But if you use a charger with too much power for a long time, it will cause the battery to be overcharged. Prolonged overcharging will increase the internal voltage of the battery, accelerate the electrolytic heat reaction, and intensify battery dehydration, ultimately leading to battery bulging and deformation, and a sharp decline in battery life.

Effect 2: Battery undercharging, increased internal crystallization affecting battery life.
What if you use a charger with less power? Taking a 60V20AH battery as an example, if you use a smaller 48V12AH charger, the battery may not be fully charged. Just like a person who doesn't eat enough every time, they will become thin over time, and the battery will also become undercharged and its capacity will decrease.

Prolonged undercharging will lead to sulfation of the battery's internal plates, and increased internal crystallization will reduce the battery's conductivity. The most direct manifestation is that the battery cannot be fully charged, or it becomes fully charged quickly but runs out of power quickly.

Therefore, when charging electric bikes, please note:

1. Use a charger that matches the electric bike's battery.
   The charger must correspond to the rated voltage and current of each electric bike's battery. Too much or too little power will have adverse effects on the battery. Therefore, it is best to use the original charger to charge the battery.

If the original charger is lost or damaged, you should pay attention to the voltage and capacity of the battery when buying a new charger to ensure normal charging.

1. Charge at a professional charging station.
   Some car owners may carry the charger with them when going out to avoid running out of power halfway. While this is acceptable for occasional emergencies, the charger's internal parts are delicate and may fall off if the road is uneven, posing a charging risk.

Therefore, if you need to charge your bike during a long journey, it is best to find a professional charging station to avoid the risks of carrying a charger with you.