If deep cycle battery is left discharged for long period of time, dendrite shorts between the plates can occur when the battery is recharged. The low resistance bridge in the shorted cell will heat up and boil the electrolyte out of the cell causing a high volumes of hydrogen and oxygen. That is why proper venting and ventilation is so important when recharging batteries. Hard lead sulfate crystals fills the pours and coats the plates. Recharging a sulfated battery is like trying to wash your hands with gloves on.
In a hot climate, the harshest environment for a battery, a Johnson Controls survey of junk batteries revealed that the average life of a car battery was 37 months. In a study by Interstate Batteries, the life expectancy in extreme heat was 30 months.
If your car battery is more than three years old and you live in a hot climate, then your battery is probably living on borrowed time. Abnormally slow cranking, especially on a cold day, is another good indication that your battery is going bad. It should be externally recharged, surface charge removed, and load tested. Dead batteries almost always occur at the most inopportune times. Other signs may include:. Are all car batteries created equal? Not really, and some vehicles, such as diesels, will require a specific heavy-duty battery.
You can also get an instant quote from RepairSmith or give us a call to speak with one of our helpful repair advisors. A car may not start for various reasons. When you turn the ignition key or press the start button, the starter motor receives an electrical signal from the battery and an electrical signal spins the starter motor, engaging the crankshaft which in turn, starts the engine.
Starter motors have been known to die a silent death on occasion, however. You may also hear this sound if the battery is not quite dead, but unable to provide enough voltage to engage the starter motor. There are several ways to get fuel in your tank. You can call for roadside assistance or ask a friend or family member to help bring you gas in a gas can. You can also walk or Uber to a nearby gas station.
They tend to carry gas cans, though be sure to confirm by calling ahead. Unlike other issues on this list, a faulty fuel pump is pretty easy to diagnose. It will usually come from the rear of the vehicle and sounds like an electric motor.
The sound is a signal that the fuel system is being primed in preparation for the engine to be started. How does it produce energy then? The chemistry inside a battery determines how it works. In a battery, electrons are pushed to the negative side and away from the positive side.
However, the positive nuclei cannot move as easily, and, as a result, opposite charges accumulate on the two sides. When a battery is put in a circuit, the charge moves through that circuit. This causes a chemical reaction inside the battery, which ultimately creates an electrical current. Learn more about Exposing the Truth about Radiation. Theoretically, the positive side of the battery can be thought of as the place where positive charges leave the battery and rush to the negative side.
Electrical current is defined to be just the motion of positive charges, and its direction is just the direction of the motion of positive charges.
Like the other battery-beliefs, this is scientifically wrong. As mentioned above, the nuclei are heavy and do not move around easily. Thus, the electrons move. They go from the negative side of the battery and then zoom around the circuit over to the positive side. Thus, the reality is exactly opposite to what most people think.
Eventually, enough chemical reaction occurs in the battery that there is no remaining tendency to separate positive and negative charges. When the tendency dies, so does the battery. If the jump works and your car starts, don't shut off your engine! Drive around for at least 15 minutes to recharge your battery. If the car won't start the next time you use it, the battery isn't holding a charge and needs to be replaced. Alex Todd Brand Manager at Its4women commented "If your vehicle will not be used for an extended period of time, it's wise to invest in a battery charger so you're prepared if and when you need a charge.
Share This Page:. There are a number of reasons why car batteries die.
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