![]() ![]() For example, consider a starting battery class that is composed of lead acid. Other battery types are just not built for that purpose. ![]() This is why we have the term “deep cycle” batteries, as these are designed to perform great even when cycled below 20 percent. Some may have the luxury of using interchangeable batteries, some do not.īut another, more compelling reason is that there are batteries that are not designed to work well when constantly brought to a very low cycle depth. So if the depth of discharge is tied closely to a battery’s lifespan, why can’t we just use our batteries up to the maximum lowest discharge depth that we can to make their lifespan last longer then? There are several reasons for this, mainly hinging on convenience and purpose.įor one thing, not all people have tons of reserve batteries so that they could easily get a replacement when the one they currently use is in 10 percent discharge. For instance, a battery that lasts for two years when consistently discharged to 50 percent will last for four years when discharged to 80 percent.Ī battery lasting for one year when discharged to 10 percent will have a lifespan of five years when discharged to fifty percent. It also helps to know the cycle depth the battery will be used with. It is not enough that we know how may cycles the battery is good for. This shows that the optimal depth of discharge is an important consideration in measuring battery lifespan, too. Now, cycle depth and battery life is correlated, so the advertised 20-year battery will have a considerably shorter lifespan when cycled to a depth lower than 5%. This discharge point is also more commonly known as the depth of discharge, or DOD, and it plays an important role in determining the actual lifespan of a battery.įor example, a battery maker may advertise itself to last for twenty years, while in checking the fine print you may notice that this measurement is only if the battery was cycled only up to a 5 percent discharge. In fact, it does not mean that at all.ĭifferent batteries have different definitions of a reasonable cycle, but the three most common is a discharge point is up to 10 percent, 20 percent, or 50 percent. Cycles do not always mean a battery discharge to zero percent then back up to 100 percent again, though. So for example, if a battery is said to have a lifespan of 1000 cycles, it means that it can undergo up to 1000 discharge and recharge procedures before you can expect it to deteriorate in performance. This is why some people express the lifespan of a battery in cycles.Ī cycle, simply put, is the process of a complete discharge and recharge. But it is never accurate, and there are factors such as weather, purpose, and climate that make predicting the years of service very unreliable. This is reasonable, as the number of years can be a good indicator of how long a battery will last. When people talk about battery lifespan, they expect to talk about it in terms of years. Hidden Content Battery Lifespan: Years, Cycles, And Depth of Discharge When the battery fails, lifespan is also one indicator that the battery needs to be recycled and replaced, with no hope for repairs, as repairs could only be less cost-efficient than getting a fresh energy cell. It needs to be considered because it is the amount of time the battery will be useful to the people after all, and the people who use the battery could plan their purchase, maintenance (if any are needed), and replacement schedules around that date. Lifespan is one of the most important battery specifications a user should know, perhaps next only to type and purpose in significance. Things such as starting viability and deep cycle battery life expectancy are points of curiosity, and it is the aim of the article to answer those questions. It is not surprising that many people will want to know the specifics of such batteries, especially those in the automotive and marine industry. A floored lead acid cell, also more popularly known as a wet cell, is one of the most common battery types in use for many different applications today. ![]()
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