How to Choose a Car Battery Guide

Car Battery Guide

Choosing the right Car Battery is a must for any car owner. You must choose a battery that meets your vehicle’s needs. You should consider the size of your battery, its voltage, and its amperage. It would help if you also considered the battery’s lifespan and warranty. With the right information, you can make an informed decision and get the best battery for your car.

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Car Battery Buying Guide

Before you buy a new battery for your Vehicule, make sure to follow the steps below to ensure that you are selecting the best battery for your vehicle.

Size of the Battery

To ensure your car’s battery fits snugly and securely in its battery tray, you need to know what group-size battery your car requires. You can find the battery group size in the battery section of your car’s owner’s manual. If you don’t have the manual, battery retailers have reference guides that will provide you with the appropriate battery group size for your car.

What Type of Battery do You Need?

Battery technology used in today’s gasoline-powered automobiles typically consists of a lead-acid battery or an absorbent glass mat (AGM). Meanwhile, electric or hybrid cars often use either a Nickel Metal Hydride (NiMH) or a Lithium-ion (Li-ion) battery. It is worth noting the differences between these types of batteries.

Modern lead-acid car batteries are mostly maintenance-free and do not need to be refilled with water like in the past. Lead-acid batteries are less expensive than AGM batteries but cannot maintain a charge for as long and are not likely to be recharged if drained by mistake.

AGM batteries can withstand repeated draining and recharging cycles more than traditional lead-acid batteries. With the increased use of smartphones and other electronics in vehicles today, AGM batteries can keep up with the increased power demand. AGM batteries are more costly – they can be up to 40% pricier than a traditional lead-acid battery.

Brand of the Battery

When it comes to car batteries, many brands are available, although they are all produced by only a few manufacturers. Some brands share the name of the manufacturer (Optima, for example).

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It is always best to purchase the battery brand specified in the owner’s manual of your vehicle. If you want to save money and the recommended brand is too expensive, ensure the alternative battery you choose has specifications that match the requirements in the manual.

Refrain from being tempted to buy the most inexpensive option. Such batteries typically have a lot of flaws and could offer better performance in the long term. Going for the cheapest battery may seem cost-efficient, but upkeep and replacement will cost a lot more than the savings in the long run.

Cranking amps and cold cranking amps

In cold weather, batteries are at their weakest, which makes it important to consider the engine-cranking power of a vehicle battery, expressed in Cranking Amps (CA) and/or Cold-Cranking Amps (CCA). This measures how much electric current (in amperes) it can deliver for 30 seconds at 32- and zero-degrees Fahrenheit, with a bigger number being better.

Reserve Capacity

A battery’s reserve capacity measures how long it can deliver maximum amperage before becoming discharged. If a battery has a high minute rating, it is more likely to be able to handle situations like leaving the lights on for long periods in a store.


When assessing car batteries, check the warranty details to determine if the coverage is a full replacement or a prorated offer. Some warranties provide free replacements for the length of the coverage, while others may provide a combination of the two. Knowing the type of warranty could significantly influence your opinion of the battery.

Always Recycle Your Old Battery

Car batteries are one of the great success stories of recycling: with proper disposal, up to 90 percent of them are recycled! When buying a new battery, retailers often charge a fee that is refunded when the old battery is returned. This encourages car owners to recycle their batteries instead of just throwing them away properly. The lead and acid inside the battery can easily be recycled, and most retailers will dispose of the old one for you.

More Battery Buying Tips

  • Check if your vehicle’s warranty covers it to ensure you get the best deal when purchasing a new car battery. Suppose you are still looking for better prices from retailers other than your car dealer. However, buying used batteries is not recommended as it can be risky.
  • When shopping for a new battery, start searching as soon as you notice signs of failure. You are more likely to find a good deal if you shop around. Typically, a car will need a battery change after 3 to 4 years.
  • You should also carry out regular maintenance on the battery. Check the terminals, cables, and connectors to ensure they are clean and corrosion-free. You can use a wire brush and a baking soda/water mixture to scrub any accumulated material on the battery terminals. Additionally, make sure the cables and posts are securely connected.
  • Consider keeping a portable battery charger inside your car for emergency use. Jump-starting a dying battery can be helpful, but only attempt this after first researching the correct procedure, as incorrect wiring connections could cause damage to your engine.


Before buying a car battery, you should consider the size, voltage, amperage, lifespan, and warranty to ensure you get the best battery for your vehicle. You should also know what type of battery your car requires. Lead-acid and AGM batteries are most common for gasoline-powered vehicles, while NiMH and Li-ion batteries are more common for electric or hybrid cars.


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