The Basil Downtube Battery Cover is a sleeve suitable for the frame battery of the Shimano Steps brand. The sleeve improves the life and performance of your e-bike battery. How does the battery cover work? The battery cover is made of 4.5mm thick neoprene material that retains heat longer and therefore protects the battery from the cold. This is ideal for the winter, when temperatures are below 15 degrees Celsius. Moreover, the battery cover also protects against shocks and damage. The sleeve fits snugly around the battery. Thanks to the holes, you can easily read the battery status. The battery cover comes in a black colour with smart lime accents. Don't have a frame battery but a Shimano Steps brand luggage carrier battery instead? Then take a look at the Basil Luggage Carrier Cover for Shimano Steps. Tip: Protect your battery during transport of your bike with the Basil Frame Electric cap. This neoprene cover protects the battery connections when the battery is removed from the bike.