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Even more important, storing a fully depleted battery may be disastrous because, as we mentioned above, a lithium-ion battery will slowly discharge over time even when you’re not using it.
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You’ll also notice in the above chart that storing a fully-charged battery has an impact on the recoverable capacity. Store A Battery Partially Charged – But Not Too Low! The chart below, provided by Battery University, shows the impacts of temperature upon recoverable capacity of a battery. It’s a good rule of thumb to store your bike out of the direct sunlight for long periods and when not in use, keep your battery in a cool place, preferably below 20☌ (68☏). In fact, that would be the worst situation: keeping a fully charged battery at elevated temperatures. For example, leaving one in your car in the hot sun will guarantee you lessen the life of your battery. Keep The Battery CoolĮnvironmental conditions are an important factor affecting lithium batteries. You should typically expect a battery to last between 3 and 5 years if it is well maintained. (A lithium battery will slowly lose its capacity over time, even if it’s not used.) Below are three things you can do to ensure you get the longest usage out of your electric bike battery. There is also a range of lithium chemistries available in different batteries and manufacturers might claim some are more robust than others but the single most important factor affecting the life of a battery is how well it is looked after. Other than that, there isn’t a significant variance: Li-Polymer allows for a slight increase in energy density but is 10-30% more expensive and so manufacturers have yet to decide upon one over the other. There are “lithium-ion” batteries and “lithium polymer” (aka “lithium-ion polymer”) batteries and the difference between them is the type of electrolyte used. Believe it or not lithium batteries have been around since 1912 but it’s only been in the last 15 years that they caught on and became economical in consumer applications. No matter what electric bike you buy nowadays, chances are it runs on a lithium-based battery. It’s our recommendation that you spend a bit more money up front to save you from headaches (or worse – the garbage dump) later. Cheap electric bicycles like the kind you find at Costco do not have the quality of manufacturing or warranty that will ensure you can enjoy the bike for years. If you take nothing else away from this post, remember this: do not buy an electric bike with anything less than a five year battery warranty and do your best to purchase a battery by one of the “big three” name-brand cells: Samsung, Panasonic or Sony. Why we’re so confident in our batteries is the quality of the cells within them. In the case of Pedego Canada, we offer a 5 Year Prorated Battery Warranty with all our electric bikes, which is one of the best in the business.
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The battery for your electric bike is typically worth about a third of the value of the entire bicycle, so it’s important to find a good quality one and take care of it.