![]() Additionally, extreme heat may boil off the electrolyte stored inside the battery. This can cause the cells to start breaking down – leading to various issues, including corrosion of the terminals and damage to internal parts. When a battery becomes overcharged, its cells become exposed to too much energy and heat. What is OverchargeĪn overcharge on a 12V system is a voltage on your battery greater than 14.4V. Is anything over 12V considered overcharged? The answer to that is “no.” A battery can safely hold around 14V and is not considered overcharged. Most of these batteries are considered fully charged when around 14.4V at rest. The charge voltage is the amount of electricity that must be present in an electrical system to be considered “fully charged.” In a 12V battery, you will likely get more than that amount of voltage. As we review the potential for overcharging, the same principles apply to the following battery type:Īll of these batteries are 12V and can be charged and re-charged with the potential of being overcharged. They are lead-plates set in an acid solution and produce 12V of power. These are flooded batteries that have been around for decades. We are referring to the batteries we all use for boats, cars and RVs. However, knowing how battery voltage works, you can watch for issues and signs of your battery being overcharged. But can that power be overcharged to where it will damage the battery or reduce battery life? As you read above, “yes” it can be overcharged. After all, a battery is a method to store power. When we refer to overcharging, we are talking about going above the battery’s capacity to safely and effectively hold a charge. Final Thoughts How a Deep Cycle Battery Can Be Overcharged.How a Deep Cycle Battery Can Be Overcharged.The information below applies to all kinds of cell batteries, including a marine battery, AGM battery, or even lithium-ion. How to avoid your battery from being overchargedĪs a side note, this post relates to all types of 12V batteries that you can use for your boat, RV, or trailer. ![]()
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