A valid Question for every battery shopper is; what determines the life expectancy of a deep-cycle battery? an accurate response to this will help them maintain their batteries and get the best value for their investment.

Deep cycle battery shoppers have something in common – the need to understand how long a battery can be utilized before the need for a replacement. The life expectancy of a deep-cycle battery is determined by a good number of factors, and many shoppers are not privileged to have this information. This is why this article is written to help you make an informed decision the next time you shop for deep-cycle batteries.  

Ideally, a deep cycle battery is expected to last between 5 to 15 years but this is not usually the case, that is why you will always look for an alternative brand with the best review online before making another buying decision. If you don’t know the factors we are about to discuss in this article, you will only make the same mistakes over and over. The third factor is the game changer if properly mastered! 

Determinant of the Life Expectancy of Deep Cycle battery 

The Type of Your Deep-Cycle Battery 

Deep cycle batteries are made from various technologies – Lead-acid, Lithium-ion, and Saltwater batteries. The technology used in producing the battery you purchase has a lot to do with life expectancy. Our focus will be on lead-acid (flooded) and AGM batteries because they are the popular ones you can easily find. These batteries are designed with longevity in mind, AGM Battery for instance can last 4 – 7 years conveniently if properly maintained, you shouldn’t allow this battery to be discharged below 50%. A flooded Lead-acid battery on the other hand will go for about 3 – 5 years. With this understanding, be sure to ask the necessary questions from sellers before you make your next purchase.   


Most buyers focus on how many years a battery can last when making a purchase. Meanwhile, manufacturers love to measure the life expectancy of a battery not just by the years but more by the number of its cycle. The simple meaning of this is that you cannot guarantee that the number of years is the best indicator that a battery will last longer, because there are other things to consider, such as the temperature, weather, and usage. It is advisable to rely on cycles than the number of years. Let me break it down, if a manufacturer indicated that a battery can last for 20 years but in the product description it shows that it can only last for that given year if you will discharge it by about 5%. If you don’t follow the recommended cycle, don’t expect that the battery will last for 20 years or so. 

How you Store your Deep-Cycle Battery

Your battery should be fully charged when not in use. These batteries do not tend to lose a lot of charges when sitting idle, therefore it is expedient you ensure they are fully charged before placing them in storage. You are also meant to top them off if they discharge to 20% DoD, this will keep your battery in good shape. When batteries are kept at freezing temperatures or in extreme heat, they tend to break down faster. Aldelano lead-acid and AGM batteries come with a maintenance guide that will help you care for your batteries to ensure they are long-lasting.

Key Take-Aways 

Deep Cycle batteries are designed with longevity in mind, the manufacturer has done a great job by ensuring that necessary information needed for consumer protection is included, it is therefore vital for the end-user to pay adequate attention to these guides to get optimum satisfaction. 

Aldelano Lead-acid and AGM batteries are products of years of research and testing just to ensure that we provide the value you’re missing in other products. We offer you batteries that are lower-cost and long-lasting.

Read here to learn how to choose the most valuable deep-cycle battery