Like your phone's battery, Lithium Ion batteries typically lose their capacity over time. However, with the advancements made in battery technology, your e-bikes battery will maintain it's capacity for a minimum of500 full charges. You can literally ride for2+ yearsbefore you starting to notice that your battery is losing its capacity; and even then, your e-bike's battery will be able to maintain70-80%of its original capacity. You will get between15,000 to 30,000miles on your e-bike before you ever need to change your battery.