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Are Car Battery Chargers Worth Buying?

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Car battery chargers have become essential tools for vehicle owners, offering a convenient way to address battery-related issues. In this article, we will delve into the topic of car battery chargers and explore whether they are truly worth investing in. By examining the benefits, options, and considerations, you'll be equipped to make an informed decision about whether to purchase a car battery charger.

Are Car Battery Chargers Worth Buying

Importance of Car Battery Chargers

Car battery chargers play a vital role in ensuring your vehicle's battery remains in optimal condition. Regular use of a battery charger helps prevent battery depletion, which can occur when a vehicle is not driven for extended periods. By maintaining a healthy charge, you can avoid the frustration of a dead battery when you need your car the most.

A car battery charger is an inexpensive bit of kit for car owners.  We have used ours several times (and lent it to family members when their car batteries died!).  Once, a dash cam was incorrectly installed on my car and didn’t properly turn off when the engine stopped, so it drained my car battery.  Luckily, we were able to charge my car from home.  We simply ran an extension lead from our house to reach the car, as it was parked on the road outside our house.  

Another time, I simply hadn’t driven my car for a few weeks and the battery was old and needed replacing.  We were able to charge the old car battery overnight, so I could drive to the nearest auto parts shop and buy a new battery for my car.

Benefits of Using Car Battery Chargers

As you can see, a car battery charger can save you from needing your car rescued by an expensive car rescue service should your battery run out, especially when you are at home and don’t need to drive anywhere immediately.  

It allows you to charge your car battery at home, or perhaps if you are staying with friends and family.  All you need is to be parked in a location where you can plug the battery charger into a socket, such as in the home, and be able to reach it to your car.  We always keep a long extension lead at home for situations like these.

Here are more benefits of car battery chargers:

Longevity: A well-maintained battery tends to have a longer lifespan, saving you money on car expenditure for premature replacements.

Convenience: Car battery chargers offer the convenience of charging your battery at home, eliminating the need for a tow to a garage.

Cost-Effective: Investing in a car battery charger is more affordable than replacing a battery due to neglect.

Emergency Preparedness: A charged battery means you're prepared for unexpected situations like sudden power outages or roadside breakdowns.

DIY Maintenance: With a car battery charger, you can take control of your vehicle's maintenance, reducing dependency on mechanics for simple tasks.

Best Car Battery Charger Options

When choosing a car battery charger, consider your specific needs and preferences.  There is not just one type of charger, but a few different options that suit different needs. Here are a few options to consider:

  • Automatic Chargers: These chargers monitor the battery's condition and adjust the charging rate accordingly. They are user-friendly and prevent overcharging.
  • Trickle Chargers: Ideal for maintaining battery charge over extended periods, trickle chargers provide a slow, steady charge to keep the battery topped up.
  • Smart Chargers: These advanced chargers use microprocessors to analyse battery health and adjust charging cycles accordingly. They offer efficient and safe charging.
  • Portable Jump Starters: Sometimes even a car battery charger alone isn’t enough as they can take a long time to charge a car and you may need to get moving a lot quicker! Some chargers also function as jump starters, allowing you to start your car without the need for another vehicle and to get moving immediately.

is it worth buying a car battery charger

How to Choose a Car Battery Charger

Selecting the right car battery charger involves a few key considerations:

Battery Type: Different battery types (lead-acid, AGM, lithium-ion) require specific charging methods. Ensure the charger is compatible with your battery.

Charging Speed: Consider how quickly you need to charge your battery. Faster charging may be important in emergency situations.

Safety Features: Look for chargers with features like overcharge protection, short-circuit prevention, and reverse polarity protection.

Amperage Rating: The charger's amperage determines how quickly it charges the battery. Higher amperage is suitable for faster charging, but make sure it's suitable for your battery.

How to Use a Car Battery Charger Effectively

Using a car battery charger correctly is essential to ensure your vehicle's battery remains in optimal condition. Whether you're maintaining your battery's charge or reviving a depleted battery, following the right steps can make a significant difference. 

Here's a step-by-step guide on how to use a car battery charger effectively:

1. Safety First:

Before you start, ensure you're working in a well-ventilated area and wearing appropriate safety gear, such as gloves and safety glasses. Make sure the charger is unplugged before connecting it to the battery.

2. Choose the Right Charger:

Ensure that the car battery charger you're using is compatible with your battery type. Different batteries require different charging voltages and modes, so consult your battery's specifications and the charger's manual.

3. Connect the Charger:

Identify the positive and negative terminals on your car battery. The positive terminal is usually marked with a "+" sign, while the negative terminal has a "-" sign. Connect the red clamp from the charger to the positive terminal and the black clamp to the negative terminal.

4. Set the Charge Rate:

Most modern chargers offer adjustable charge rates. If your battery is deeply discharged, choose a lower charge rate initially. If the battery is just being maintained, you can opt for a higher charge rate. Refer to the charger's manual for instructions on adjusting the charge rate.

5. Plug In the Charger:

Once the charger is properly connected and the charge rate is set, plug the charger into a power outlet. The charger will start supplying current to the battery.

6. Monitor the Charging Process:

Keep an eye on the charging process. Some chargers have built-in indicators or displays that show the battery's state of charge. Monitor for any signs of overheating or unusual behaviour during the charging process.

7. Disconnect Safely:

When the battery is fully charged, unplug the charger from the power outlet before disconnecting the clamps from the battery terminals. Start by removing the negative clamp followed by the positive clamp. Be careful not to touch the clamps together or allow them to touch any metal surfaces.

8. Store the Charger:

Properly store the car battery charger in a cool and dry place when not in use. This helps prolong its lifespan and ensures it's ready for future use.

how to use a car battery charger

Pros and Cons of Car Battery Chargers

Before making a decision, let's weigh the pros and cons of investing in a car battery charger:


  • Saves money on battery replacements.

  • Convenient and time-saving.

  • Enhances battery lifespan.

  • Provides a backup during emergencies.

  • Empowers you to perform basic car maintenance at home.


  • The upfront cost of purchasing a charger (but cheaper than being rescued and paying a car garage!).

  • Requires proper understanding of battery types and charger operation.*

  • Some chargers might not be compatible with all vehicle models.*

  • Some models can take a long time to charge the car battery so you won’t be able to drive right away.

* Simply go to your nearest auto centre, such as Halfords, and ask their advice to buy the correct charger and be shown how to use it so you’re confident!

Final Thoughts: Are Car Battery Chargers Worth Buying?

In the question of whether car battery chargers are worth buying, the answer depends on your individual circumstances. If you value the convenience, cost-effectiveness, and peace of mind that comes with a properly maintained battery, investing in a car battery charger is a practical choice. By adhering to the right maintenance practices and choosing the charger that suits your needs, you can extend your vehicle's battery life and ensure a smooth driving experience.

It can also be a lifesaver when your car has run out of battery and you need to drive it.  This is especially useful if you are short on money and can’t afford a rescue service to get you to a garage to charge the battery or replace it, which could be costly.

In summary, car battery chargers are indeed worth buying for vehicle owners who prioritise reliability, preparedness, and savings in the long run.