When you should change the battery of the e-bike?

When you should change the battery of the e-bike?

The popularity and the rising demand for e-bikes come from the practicality and the innovation they provide. Namely, the traditional bike relies only on the physical activity of the rider, which gets it moving. However, the electric bike can work both with turning the pedals and through the power in the motor, that comes from the battery. But what happens if there is battery replacement needed? Just like all the other objects and vehicles that are powered by a battery, the E-bike too will face a time when it will require its battery to be replaced.


There are different types of batteries the E-bikes use. The most common ones use nickel-cadmium, lithium-ion polymer, sealed lead-acid, and nickel-metal hydride. After a certain amount of time, the battery needs to be replaced, which will put the e-bike back on the streets, riding in the best lights and providing the best enjoyment.


The lifespan of the battery depends on the type of usage. When the battery is no longer dependable, it should be replaced with a new one. Changing the battery allows the rider to continue using the e-bike, with the greatest possible service with minimal issues. So, when is the right time to change your e-bike battery?

 End of Lifecycle

It is important to know that the regular E-bike battery lasts between 3 and 5 years. This lifespan can also be altered depending on how the battery is being taken care of. The battery will last longer if it, or the bike itself, is kept in a dry place, without great temperature fluctuations. During the time of you, you will see that your battery is becoming less efficient. As time passes, the battery of your E-bike should be replaced.

 Physical Damage

Another thing that can lead to battery change is physical damage. The physical damage might occur as a result of various road bumps and vibrations during long trips and journeys. Such vibrations can displace the battery from its original place. It will result in shortening the cables, or damages to the battery casing. Additionally, it might cause terminals to get into contact with a conductive surface, which leads to overheating and maybe even fire. In such cases of physical damage, the battery should be replaced immediately.

 Failure to Charge

Failure to charge is another indicator that the battery needs changing. When the battery does not charge, the bike will stop running. Additionally, some other electricals on the bike might stop working, such as the lights for example. When the battery does not charge, it means it most certainly is dead. Before getting a new one, it is always best to ask for a professional to take a look at the dead battery and the problem with charging. If the battery is dead, then, the only solution is to replace it and buy a new one.

 Reduced Range

The reduced range is another indicator that shows that battery life is coming to an end. Some types of batteries have a limited life. They need to be replaced as soon as you realize that they cannot provide the range they originally did. The new battery will offer the original range, which provides longer rides.

 Swollen Battery

The look of the swollen battery happens because of incomplete chemical reactions. Such reactions result in the creation of gas. When that happens, the gas fills up the cattery and makes it look swollen. Also, it can swell if the internal layers do not properly separate the chemicals and the components. Riding the bike with a battery in such a condition can cause great harm.

 Hot Battery

The battery might become hot or heat up for several reasons. One of them is due to an external short circuit. If the battery is stored nearby other metallic items, these items can act as a bridge between the positive and the negative poles of the battery. Also, they can swell because of an internal shock. Such things can happen by a sudden fall.


The e-bike battery contains sulfuric acid. This acid releases hydrogen gas. When the gas mixes with other elements, it leads to corrosion of the battery terminals. Overcharging and undercharging are also other factors that can lead to corrosion of the battery. It is suggested to clean off the rust of the battery with a toothbrush and baking soda. If that does not work, then, the battery needs to be changed.

 Bad Smell

The battery can produce a bad smell because of freezing, overcharging, or internal shorting. The smell is often described as a rotten egg smell. It happens in batteries that use a mixture of sulfuric acid and water. If it is not cared for properly, the sulfuric acid can damage other parts of the e-bike, and in some cases, even produce smoke.


Whenever some of these things happen, or you see your E-bike acting differently, that means that the battery might be in question. If you have had your e-bike with the same battery for more than 3 years, then, it is definitely time to change the battery. Going on with the damaged battery will only do more harm to the bike and you might experience an unenjoyable ride.


When it comes to changing the battery of your E-bike, it is important to change it with the same type. Different E-bikes use different types of batteries. If you pick a different type than the original, the E-bike might not act as it should, causing malfunction. The model and the type of the battery are stated on the battery itself, so you should go for the same type. Only that way, you will restore your E-bikes functionality to the fullest, and make it ready for your future rides. If you do decide to change the battery yourself, be sure to have all the appropriate tools and kit for that. If not, leave it to a professional.