Hi guys! The subject of keeping Lithium-ion batteries insulated has come up from time to time, because cold temperatures impact how capacity is expressed and this impacts range for electric bike riders. I've got a couple of solutions to share, along with some history, but let's begin with a general recommendation. Even if you do have a way to insulate an ebike battery... if it starts out very cold, the insulation isn't going to matter. For this reason, I usually remove my ebike battery and store it in a cool dry location (cool, not cold or freezing). My understanding is that cold doesn't harm the cell chemistry that extreme heat can (reducing charge cycles and possibly leading to complete failure or fire). The best case scenario is to keep a battery in a neutral environment, connect it to your ebike just before setting out for a ride, and possibly insulating the battery so the outside air temperature and wind won't cool the pack too quickly... resulting in decreased range.
Product: BH Easy Motion Neo, Evo, Atom models neoprene battery cover. Official product, sold through BH Easy Motion dealers. Uses a zipper to surround the downtube-battery design that Easy Motion uses for many of their bikes.
Product: Yamaha and Haibike neoprene battery cover. Third party product sold in Europe. Appears to slide over the battery pack and not require a zipper or velcro, it even has some holes that show the LED charge level indicator on top of the pack.
Product: The unfortunately named NC-17 generic neoprene battery cover that appears to work for Bosch PowerPack and some rear rack batteries. The website says it's compatible with many downtube mounted batteries, the Bosch rear rack battery pack, Yamaha downtube mounted batteries (much like the product above), and even the Bosch PowerTube fully integrated battery. Third party product sold by Scooteretti. It appears to use velcro to attach to the battery or around a downtube with integrated battery pack but may be a slip over for the downtube mounted designs that are not internal.
As always, I'd love to hear your thoughts on this subject and see examples of solutions you have used, or links to other third party suppliers. An added benefit of some neoprene covers is that they may protect the battery a bit if it is dropped. I was always impressed with the BH Easy Motion solution for the Neo and Evo models of years past, being the first product I ever saw on the market like this when I covered the Easy Motion Evo Snow, but did find the zipper design a bit tricky to zip onto the frame each time.
Product: BH Easy Motion Neo, Evo, Atom models neoprene battery cover. Official product, sold through BH Easy Motion dealers. Uses a zipper to surround the downtube-battery design that Easy Motion uses for many of their bikes.
Product: Yamaha and Haibike neoprene battery cover. Third party product sold in Europe. Appears to slide over the battery pack and not require a zipper or velcro, it even has some holes that show the LED charge level indicator on top of the pack.
Product: The unfortunately named NC-17 generic neoprene battery cover that appears to work for Bosch PowerPack and some rear rack batteries. The website says it's compatible with many downtube mounted batteries, the Bosch rear rack battery pack, Yamaha downtube mounted batteries (much like the product above), and even the Bosch PowerTube fully integrated battery. Third party product sold by Scooteretti. It appears to use velcro to attach to the battery or around a downtube with integrated battery pack but may be a slip over for the downtube mounted designs that are not internal.
As always, I'd love to hear your thoughts on this subject and see examples of solutions you have used, or links to other third party suppliers. An added benefit of some neoprene covers is that they may protect the battery a bit if it is dropped. I was always impressed with the BH Easy Motion solution for the Neo and Evo models of years past, being the first product I ever saw on the market like this when I covered the Easy Motion Evo Snow, but did find the zipper design a bit tricky to zip onto the frame each time.
