6 things to note when replacing a new car battery
(Baonghean.vn) - The battery is one of the components that plays an important role in the operation of a car; it plays the role of storing electricity, providing energy for the starter, the ignition system to help start the engine... When choosing to buy or replace a new battery, car owners need to pay attention to the following 6 important issues.
1. Battery type
Most car batteries are lead-acid batteries, which are divided into two main types: open batteries (wet batteries) and sealed batteries (dry batteries).
Water batteries provide stronger current, suitable for vehicles with large starters, but take a lot of time to maintain and add distilled water.Dry batteries have weaker current than wet batteries but do not require maintenance, only use once until the power runs out. Therefore, dry batteries are used more widely and popularly.
2. Battery size
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Batteries are manufactured in a wide range of sizes and electrode positions. Choosing the right battery size is important to ensure the easiest and most stable installation and operation.
To be sure of the battery size group, you can check your vehicle's owner's manual.
3. Battery voltage and capacity
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These are two important parameters that affect the stable operation of the battery.
To find out the exact voltage of the battery, consult your vehicle owner's manual or refer to the old battery. If the vehicle's electrical system only requires a 12V battery, using a 24V battery can damage the entire system.
Battery capacity is measured in Ampere hours (Ah); tThe higher this parameter is, the more electricity the battery discharges, the more time the generator needs to charge the battery... If this parameter is larger than the generator's charging current value, the battery will not be fully charged when charging, causing it to wear out and break; If the capacity is too small, it can cause overcharging, which can lead to battery explosion.
4. Battery capacity
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Reserve Capacity (RC) is the capacity of the reserve battery to supply electrical loads when the power supply system fails. RC is measured in minutes when the battery discharges 25 A at 25 degrees Celsius before the voltage drops below the specified level. Battery capacity for vehicles is usually between 55 and 115 minutes.
5. Starting current parameters
The cranking amps (CA) and cold cranking amps (CCA) measurements are also important for diesel vehicles.
The “starting current” rating is the maximum current the battery can supply for 30 seconds at 0 degrees Celsius, while maintaining a minimum voltage of 1.2 volts per cell. The cold starting current rating is determined in a similar way, but at -18 degrees Celsius and with a minimum voltage of 1.5 volts per cell. The cold starting current of a car battery is between 150 and 800 amps.
6. Brand selection
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