When talking about the longevity of a lithium-ion (Li-ion) battery, whether it's for a laptop, phone, smartwatch, drone, Nintendo Switch 2, wireless earbuds, or electric vehicle, terms like battery health and cycle count are thrown around. Unfortunately, this is a process that can't be stopped, but both battery health and cycle count provide important information about a Li-ion battery's capacity. Battery health informs you about the overall condition of your battery, particularly how much its capacity has degraded from when it was 100%. Cycle count is the number of times you've used 100% of the battery's current capacity. As you can see, these terms are related in the sense that cycle count is one of the measures of battery health.