There are several things that can contribute to that: You did not notice that your battery is slowly discharging Adding distilled water to your wet cell (or flooded) deep cycle battery just enough to cover the exposed plates before each charge, will help you avoid this situation in the future. In this situation, your plates will start sulfating immediately and before you know it, it will become useless. You did not notice that your electrolyte plates are exposed to air Big mistake!Įven though the finishing 20% will take about the same amount of time as an initial 80%, if your battery charge is incomplete the sulfation process will begin with future consequences. It is very common for people to see a battery charge of about 80% and start using it right away. You are constantly undercharging your battery The deeper the discharge, the faster the lead plates of a battery will be coated with sulfate crystals until the point where it will become unusable. You discharged your battery deeper than allowed by that specific battery type Sulfation begins at about 12.5 v and the longer your battery sits at this and lower level, the faster it will become useless. You let your battery sit too long without charging after the dischargeĮven if it’s a little as 24 hours, your battery will not appreciate it and start losing its capability due to sulfation build-up. If you are in a situation where your battery does not take or hold the charge, there is a big chance that you have done any of the following: 1. Using a good battery management system (also known as BMS) is good help here. If you are not taking proper care of your battery and it starts giving you less or no power, there is a big chance that you “killed it”! We may not think about it, but it is so easy to ruin a battery just by not charging it fully enough or letting it discharge more than it should (maybe both). īatteries are sensitive things! Just like living organisms, if you don’t “feed” them properly (or take more energy than they can safely give you), they will just die on you! Here is an infographic to help you out (if you are in a hurry). Using Digital Voltmeter, Multimeter or Wattmeter is the easiest way to find out the charge level of your deep cycle battery: If you visually see a lot of sulfation, your battery is either dead or will be really soon. This condition is typically caused by overcharging or undercharging and exposure to air battery plates. This is another sign of possible battery failure. Cracks on the battery, commonly occur if the battery was overcharged and overheated quite often. The battery case should not be damaged. If it’s not, that could be the first sign of possible uncontrolled discharge, which could lead to a shortened lifespan of your battery.
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