What Happens If A Deep Cycle Battery Goes Flat. What happens if a deep cycle battery goes flat. If your battery shows a good voltage when its fully charged but quickly drops voltage to 11V or less when using power this usually means the battery has a faulty cell and needs replacement.
If your battery shows a good voltage when its fully charged but quickly drops voltage to 11V or less when using power this usually means the battery has a faulty cell and needs replacement. When a deep cycle battery is fully discharged dead flat it should reveal a reading of approximately 105V. 9Leave the Battery Extra connected and use the battery.
When the positive and negative terminals are connected through a load a light bulb for example it will allow electrons to flow from negative terminal to the po.
In warmer climates and during the summer watering is required more often. Recharging slowly and keeping your battery well maintained are the best ways to extend the life of your battery. If your battery shows a good voltage when its fully charged but quickly drops voltage to 11V or less when using power this usually means the battery has a faulty cell and needs replacement. A fully charged battery will read around 128 volts indicating a full charge.
