A lithium battery case is an empty box or shell to contain lithium batteries or a lithium battery pack inside. Generalmente, it has electrical connectors to support the lithium batteries’ charge/discharge. Some lithium battery cases have USB ports or LED capacity displays for special functions.

The core function of the lithium battery case is to protect the lithium battery from damage. Lithium battery cases can keep the whole lithium battery pack away from moisture, dust, and strike, which can help the lithium battery pack inside work in stability, ensuring a longer lithium battery pack lifespan.

The lithium battery cases can be made from different materials, like plastic, aluminum， and stainless steel. Different materials have advantages and disadvantages for lithium battery case applications.

Plastic material can make out different shapes and is easy to molding, that is the advantage of plastic lithium battery cases, especially for most of the Ebike lithium battery cases.

Low density, corrosion resistance, impact resistance, shock resistance, easy molding, low price.

Good collision energy absorption effect, strong anti-rust ability. Alloy aluminum has a lighter weight compared to steel material.

Stainless steel lithium battery cases are with excellent chemical resistance and corrosion protection, are high-strength shock-resistant and are suitable for use in electric vehicles.

But the steel lithium battery case is not as safe as the aluminum battery case, it will explode if a short circuit happens.