Water Resistance of E-Bike Batteries: IP Codes
What stands out is that many e-bike manufacturers avoid using the term 'waterproof.' According to the international standard IP (International Protection), the term waterproof would mean that an object remains usable underwater under specified conditions. Therefore, most manufacturers choose to declare in a less specific way that their e-bikes can withstand water well. This approach allows manufacturers to provide fewer guarantees and protects them from spreading inaccurate information. However, some bike batteries do have an assigned IP code, and we will discuss this further.
The IP code indicates the level of protection a device has against the intrusion of water and dust. This code consists of two numbers: the first digit indicates the degree of protection against dust, while the second digit indicates the degree of protection against water.
The water resistance of an e-bike battery is denoted by the second digit of the IP code. This digit can range from 0 to 9, indicating the level of water resistance. For example, a battery with an IPX0 classification provides no protection against water, while a battery with an IPX9 classification is protected against immersion in water, heavy rain, and high-pressure water jets.
Below is an overview of different IP classifications and what they mean for the water resistance of an e-bike battery:
| Moisture Protection Level Expressed in IP Codes |
It is crucial to know the IP classification of your battery to protect it appropriately from water. If your battery has a low IP classification, it is advisable not to store your electric bike battery outside without protection. In such cases, storing your bike battery in a waterproof bag or cover is often a better option. Do not expose your bike battery to heavy rain or powerful water jets, especially if it has a lower IP classification. Generally, e-bike batteries have an IPX4 classification, meaning the battery is protected against splashing water from any direction. Occasionally, bike batteries may achieve an IPX5 classification, indicating protection against water jets from any direction.
Can a Bike Battery Withstand Water?
Although the IP code provides a good indication of the level of water protection, it does not guarantee that your battery will not suffer water damage. Therefore, it is essential to handle your battery with care, considering factors such as the quality of seals, the way the battery is mounted on the bike, and weather conditions. Riding an e-bike in the rain should not typically cause water damage to the bike battery. However, the risk of water damage increases if you frequently expose your bike battery to storms and heavy rain. We always recommend storing your electric bike indoors. Here are some additional tips to protect your bike battery from water damage:
- After using your e-bike in the rain, it is crucial to dry and clean the battery after each use to prevent corrosion and other water-related damage.
- If your e-bike battery gets wet, avoid charging it immediately. Let the battery dry completely and check for signs of damage before using or recharging it.
- Some e-bike batteries come with additional features to enhance water resistance, such as special coatings or seals. If you plan to use your e-bike frequently in wet conditions, it may be worth investing in an electric bike with a battery equipped with these extra features. Ensure that such a bike battery is compatible with your electric bike, as not every battery fits every e-bike.
If you are wondering whether an electric bike can be stored outdoors under, for example, a shelter, you might find it interesting to read this blog post where we discuss the conditions under which an electric bike can be stored outside. If you have any further questions, especially about the water resistance of e-bike batteries, feel free to contact our customer service. They are happy to help!