Battery care tips from Bosch
Bosch, who makes all the washing machines and cordless drills, has jumped into the e-bike market. They are a major player in Europe, and are competing heavily with Japan's Shimano Corp. selling a line of well-made, well-supported e-bike motors. TerraTrike currently uses Bosch motors on the Rambler EVO, and in their Boost Kit, which will retrofit any TerraTrike currently in production, excepting the Sportster and Tandem Pro. Catrike will be using Bosch motors on their E-Cats.
Anyway, I got a newsletter from Bosch about battery care, and it taught me a few things, so I wanted to share it. This covers lithium-ion batteries, which are the standard nowadays on any decent assist system; Shimano, Bosch, Bionx, Bafang, Golden Motor, E-bike Kit, or any of that zoo of brands coming out of China. Here is a reprint:
Do you have customers who plan to store their Bosch-equipped bikes during the winter months? Let them know that the ideal battery state-of-charge for long-term storage (i.e. over three months) is between 30%-60%, and the ideal storage condition for their battery is a cool, dry location that’s between 32°F-68°F. Note: a little warmer is better than below freezing, so when in doubt bring your battery inside; just not by the furnace.
Is it cold where you ride and do you and your customers prefer to use their Bosch-equipped eBikes through the winter? Excellent! Just keep in mind that you may need to adapt your charging habits to cold weather. If it can get below freezing where you store your bike, bring your battery inside to charge at room temperature.
The performance of your Lithium-ion Bosch battery can be temporarily affected by the cold. If you’re experiencing significantly decreased range during your cold-weather rides, consider storing your battery at room temperate prior to your ride and using an insulating, neoprene battery cover.
As we often say, think of your battery as something like a living thing. Your bike can be treated like a piece of machinery, but the battery isn't quite like that.
We don't have battery covers in stock since it never gets that cold around here, but if you are interested in them let us know, as we can get them from Bosch's US distributor. They have models to fit either Bosch or Shimano systems.
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