When a car battery is overcharged, the most common effect is the battery rapidly dying, however, a battery that swells and becomes hot to the touch is also a direct result of overcharging. When the battery swells, sulfuric acid can leak from the battery. This is potentially harmful when it comes in contact with the skin and should be avoided if at all possible and if not, needs to be washed off the skin immediately.Know More
An overcharged battery will get hot and could even explode. The explosion will throw battery acid everywhere, endangering those within the vicinity of the explosion. If the voltage of the battery is overcharged, the battery will be severely damaged and have to be replaced.
As car batteries are used, the chemical properties begin to degrade. Over time, they will hold less and less energy, meaning their capacity decreases. This causes the battery to wear out faster each time the battery is charged. Connecting high-voltage chargers will then exhaust the worn out battery, potentially resulting in overcharge scenario.
Always use the correct charger when charging a car battery, and have it checked periodically by a specialist if charging must be done frequently. Pay attention to labels that indicate exactly how the battery should be charged; this helps eliminate overcharging and possible harm and injury.Learn more about Car Parts & Maintenance
To test a car battery with a multimeter, set the multimeter to measure DC voltage, and set the dial to 20 volts; with the car off, disconnect the battery cables and attach the multimeter leads to the positive and negative posts on the battery. Wait for the reading.Full Answer >
To change a car battery, loosen the nuts that secure the cables to the terminals, and then lift the battery out of the car to exchange it for a new one. Wear gloves and safety glasses to protect yourself from acid leaks.Full Answer >
To jump start a car battery, expose the dead and working batteries, connect them with jump leads, start the working car, wait one minute, start the other car, wait several minutes, and unlink the batteries. This 45-minute procedure requires jump cables and a car with a working battery.Full Answer >
To recharge a car battery, clean the battery terminals, and connect a trickle charger to the terminals. Turn on the trickle charger, and allow the battery to charge overnight. Check that the battery is charged by turning on the vehicle.Full Answer >