Cracks, splits, holes, and other obvious signs of wear could mean your battery is degrading to the point that it is becoming unsafe to continue using. When a short circuit occurs, all of the power stored in the battery is unloaded instantly, which can damage any solar equipment that is connected to the battery, and, in some cases, the battery can become extremely hot and even explode.īulging in the case is typically a sign of overcharging, which could mean you have an issue with your charge controller. For starters, a broken or loose terminal can become dangerous if the battery continues to be used, as these issues can lead to short circuits. Searching for the above signs of degradation should always be your first step if you suspect your deep cycle battery might be bad. Leaks or pools of liquid around the battery.Cracks or ruptures in the exterior of the battery.Any sort of bulging in the battery’s case.Even if you are fairly new to solar storage and you do not know much about deep cycle batteries, there are some obvious signs that your battery could be faulty. In many cases, a thorough inspection of the battery will be enough to tell you if it is bad. Perform a Thorough Visual Inspection of the Deep Cycle Battery.The following are three of the most accurate and straightforward ways you can test the status of a deep cycle battery: This is why it is always worth testing your deep cycle batteries to make sure they are bad, before you go about replacing them. Often, this is the result of using a poor-quality or faulty charge controller. In other cases, your batteries could be losing their charge due to battery drain, which occurs when power flows in the reverse direction from your battery to your solar panels. In some cases, people blame their batteries when the reality is their solar panels are underperforming. While you might just assume that any battery that is not holding a charge is bad, the truth is there could be a number of other reasons why you cannot access power from your battery bank. If you have noticed that your deep cycle solar battery will no longer hold a charge, there are three simple ways to test the battery. Three Ways to Check if a Deep Cycle Battery is Bad We will also recommend some high-quality deep cycle solar batteries and solar kits you can use to build a high-performance battery bank for your solar power system. To help you keep an eye on your deep cycle solar batteries and make sure that your solar battery bank is operating as it should, we are going to explain how you can tell if a deep cycle battery has gone bad. While some will have total recharge cycle estimates, you cannot rely on these numbers completely. This is why no deep cycle batteries list an exact expiry date. The rates of degradation will differ depending on a wide variety of factors, including the storage conditions for the battery itself, external temperature variations, the overall quality of the battery, and the amount it is used. This degradation is an unfortunate, but unavoidable consequence of the chimerical reactions that occur inside batteries when they are running. This is why it is so important to test your deep cycle batteries and make sure they are actually holding a charge.Įven the highest quality lithium-ion deep cycle solar batteries continuously degrade from the moment they are first used. No matter what sort of battery you are using, the performance will diminish the more you use it. Open Mon-Thurs: 10am-6pm & Friday's 10:30am-5pm Eastern
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