Honda civic 2002 battery size

⚠️ What Size Battery Fits My Honda Civic? ⚠️


The Honda Civic was first introduced to the public as a 1973 model in 1972. The Civic is now in it's tenth generation and has proven to be one of the most-popular and best-selling cars in both the United States and Canada. With so many of these Hondas on the road and all the miles they accumulate over time, it's inevitable that their batteries will need to be replaced at some point.

So which battery fits your Honda Civic? In many cases, the answer isn't as simple as mentioning one size, because as the Civic has gone through ten different iterations, there are bound to be changes that have taken place, which may impact the battery that is best-suited and designed specifically to fit in your Honda. However, the Civic is one of those rare exceptions, that has remained relatively-constant in it's battery needs over the years, regardless of the generation of car or size of engine.

In many cases, the OPTIMA D51R is a direct-fit replacement for the Honda Civic. In fact, you can click here to buy a D51R factory-direct and have it delivered (for free) to your front door. Some manuals or battery guides may also list the 51R as a replacement battery, which is basically the same size as an OPTIMA D51R YELLOWTOP. The "D" in the OPTIMA battery name stands for deep-cycle, which means it can be used in both starting and deep-cycle applications, like car audio. The "R" in D51R means the post configuration is reversed from the normal orientation. That means as you look at the label on the top of the batteryon a D51R, the positive terminal will be on the right-hand side and the negative terminal will be on the left-hand side.

OPTIMA also offers a D51 battery, which is identical to the D51R in every regard, except one very important detail- the terminals are reversed. Thei battery may come in handy, if the cables don't quite reach on a different application. It is important to make sure you get a battery for your Civic or any other vehicle you may own, that is a direct-fit replacement. While the D51R is a direct-fit replacement for most Honda Civics, that may not be the case for all of them, especially since the production spans more than 40 years. Make sure the D51R is a direct-fit replacement for your Civic, by clicking here to go to our automated fitment guide that will ask you for the year, make, model and engine size. Check out some of the coolest Honda Civics we've seen over the years at tracks we sponsor and events we've attended-


When buying a new battery for your Honda Civic, there are some features to look out for to help you make the right choice. The first priority is to choose the correct size battery. Manufacturers use a Group system to classify batteries by size. The Honda Civic battery is in Group 51.

Another vital feature to look out for is the battery’s starting power, known as the Cold Cranking Amps (CCA). This is a measure of the power the battery has to start an engine from cold.


Feature #1: Size- Group 51 or Group 51R

What Group Size Battery does a Honda Civic use?

The best way to check the size of the battery you need is to look in the owner’s manual. Batteries are not made for specific cars. Instead, car manufacturers design the battery space to accept a standard battery size. In the case of the Honda Civic, you should use a Group 51 battery type.

There are two types of battery in this group, the 51 and the 51R. The only difference between the two types is the location of the battery terminals. Make sure you choose the correct type because if you fit the wrong type, the battery cables may not reach, or you may find the cables are stretched too much.

If you are searching online for a new battery, many websites, such as Amazon, allow you to search by vehicle make and model. This way, you will only be shown the correct batteries for your car.

Battery Recommendations based on Group Size

Below are the Honda Civic Battery recommendations based on Group Size. But don’t worry, we always consider the CCA rate when choosing these batteries to make sure that they can easily start your engines.

Group 51 Batteries for Honda Civic

Optima D51 Battery: Spend more – Save more

Optima D51 Honda Civic battery

Optima Group 51 450 CCA Battery

This dual-purpose battery fits perfectly in most Civic models. It meets the CCA requirement to start Civic cars, and has RC of 55 mins for constant performance.

Price range: $260-$270.

Check Price at Amazon

The Optima D51 is a Group 51 battery, measuring 9.21 x 4.98 x 8.94 inches (L*W*H). This makes it ideal for Honda Civic models that use the Group 51 size batteries.

The Optima is one of the companies Yellow Top range, built to withstand vibration and increasing battery life. Fitting the correct size battery also helps to reduce vibration, as the battery holder strap will secure the battery tightly in place.

Other features of this battery include a deep-cycle capability and 450 cold-cranking amps, making this a powerful unit. The deep-cycle feature allows the battery to drain to a very low voltage regularly without being damaged.

Group 51R Batteries for Honda Civic

Megavolt BCI 51R: Lower-priced than ever

Megavolt 51R

Megavolt Group 51R 550 CCA Battery

This is the cheapest battery that you could find for your Honda Civic. It is known to withstand even the challenging weather conditions with 550 CCA.

Price range: $115- $125.

Check Price at Amazon

The Megavolt is a Group 51R battery measuring 9.29 x 5 x 8.78 inches (L*W*H), making it slightly larger than the Optima 8071-167. But as it’s a Group 51R battery, it’s still the correct size for some Honda Civic vehicles.

Compared to the equivalent Optima batteries mentioned in this review, the Megavolt is heavier. The increased weight is due to the Megavolt being an acid-flooded battery, where the Optima’s use the newer absorbed glass mat (AGM) technology.

The more recent AGM specification saves around three pounds in dead weight, something that’s important to performance enthusiasts.

Optima Yellow Top Group 51R: Big brand, Is investing really worth it?

Optima Group 51R Honda Civic Battery

Optima D51R 450 CCA Battery

The same specs of Optima D51 but the positive terminal is on the right, which is perfect for standard Honda Civics.

Price range: $259-$269.

Check Price at Amazon

The OPT8073-167 is the Group 51R equivalent of the Optima 8071-167 D51 battery mentioned earlier. The specification of size and weight of both batteries is identical. The only difference is in the position of the battery terminals.

If you look at the battery labels on the Group 51 version, the positive terminal is on the left. On the Group 51R battery, the positive terminal is on the right. On a standard Honda Civic, the Group 51R is the standard fitment.

Feature #2: CCA

How many CCAs does your car battery have?

Every battery type is different, and the Cold Cranking Amps (CCA) will usually be stamped on the side or top of your battery. The standard battery fitted to the Honda Civic was a 410 CCA. However, group 51R batteries generally have more than 500 CCA, making them more powerful than the OEM battery.

If you live in colder climates, this makes the engine more difficult to turn over and start. Oil gets more viscous as the temperature drops, so choosing a battery with a higher CCA in these climates is a good option.

Battery Recommendation based on CCA

The standard battery had a CCA of 450 amps for older Honda civic models, but later models had over 500CCA. The extra power helps turn the engine over in colder conditions and is generally recommended in place of lower CCA batteries.

XS Power D5100R XS: Perfect Choice For The Most Challenging Weather Conditions

XS Power D5100R

XS Power Group 51R Battery

This XS Power battery is pricey but worry-free. With 745 CCA, it can start your Honda Civic like a champ even after a long time of no use.

Price range: $285- $295.

Check Price at Amazon

The XS Power D5100R XS provides a whopping 745 CCA in a Group 51R battery size, making it perfect for the Honda Civic. With an extra 295 CCA compared to the standard model, it will have no problem starting the Civic.

The XS Power is an AGM-style battery that benefits from its advantages in low maintenance and no chance of acid spillage. It should be mentioned that this battery is slightly larger than the Group 51R standard, so measure carefully before ordering one for your Honda Civic.

Tips When Buying A Honda Civic Battery

Getting the correct battery for your Honda Civic is essential for long working life and preventing the battery from letting you down.

  • Check the size requirement for your battery. Most Honda Civic models use the Group 51R battery, but there are differences between model years. Check the owner’s manual or ask your dealer.
  • If you want more power, you could fit a larger battery, but this may mean that the battery won’t fit the standard tray. Larger trays are available if you have space.
  • Check the battery manufacturing date code. It would be best if you looked for a battery less than two months old. The code is in a four-digit form. For example, the code 12/08 means December 2008.

Final Thought

So with the Group 51/ 51R battery, you have a few options to choose from for your Honda Civic. Below are three that you should consider purchasing:

XS Power Group 51R

XS Power Group 51R

Check Price at Amazon

#1 choice: Offer a massive increase in CCA, is an AGM-type battery.

Optima Group 51

Check Price at Amazon

#2 choice: Offer the standard CCA, give the benefits of an AGM-type battery.

Solimo Epsom Salt Soak 8 lb

 Megavolt Group 51R

Check Price at Amazon

#3 choice: Offer decent standard performance, cheaper than an SLA-type battery.


1. Should I choose an AGM battery or SLA battery?

AGM and SLA batteries both have their advantages and drawbacks, so choosing AGM or SLA battery depends on your expectations and your budget.

Below are the pros and cons of each type:

Pros and cons of SLA Batteries:


  • Lower price
  • SLong working life
  • Available for almost every vehicle type


  • Must be securely mounted in a vertical position to prevent leakage
  • Regular maintenance is required to prolong their life
  • The release explosive and toxic hydrogen gas during charging
  • Susceptible to damage by movement and vibration

Pros and cons of AGM Batteries:


  • No danger of acid leakage, can be mounted in any position
  • Low maintenance
  • Very little gas is released during charging
  • Resistant to damage through vibration and movement


  • More expensive compared to SLA/FLA batteries
  • Incorrect charging may damage the battery

2. How long does a Honda Civic battery last?

The working life of a lead-acid battery is dependant on many factors, but you should typically expect between three and six years. Some factors affecting life include;

  • Regular maintenance. FLA batteries require acid topping up, which SLA and AGM batteries do not. However, all types of batteries will benefit from being connected to a reconditioning trickle charger at regular intervals
  • Working conditions. Vibration is a killer for some batteries, particularly the FLA and SLA types. Mounting your battery correctly and adding some vibration absorbing material can help to extend the battery’s life.

3. What is the Ah rating and is it important?

The Ah rating of a battery is a measure of the power a battery can provide and for how long. For example, a 100Ah battery can provide 20 amps for five hours. Alternatively, it can provide 5 amps for 20 hours.

It is important to make sure that when you buy a replacement battery that it has an Ah equal to or greater than the manufacturer’s standard battery.

Read more: 3 Best Batteries For Honda CR-V 2021 Review

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Car Batteries for 2002 Honda Civic

2002 Honda Civic Battery Replacement & Size

Not sure what battery to get for your Honda Civic? Use this chart to find the right battery size and CCAs for your Honda Civic.

Battery Engine Warranty Cold Cranking Amps
L4/2.0L Replacement months Performance months
L4/1.7L Replacement months Performance months


- Battery:

- Warranty: Replacement months, Performance months

- Cold Cranking Amps:


- Battery:

- Warranty: Replacement months, Performance months

- Cold Cranking Amps:

Schedule an Appointment

Shopping for Honda Civic Car Batteries

Your Civic doesn't have an expiration date, but its battery does. Generally, car batteries last from three to five years. Check your battery regularly and replace it as needed so it doesn’t leave you and your Honda Civic stranded. Pay attention to clues that your battery is on its way out. A sluggish engine start, an illuminated check engine light or battery signal, swollen battery case, corrosion-covered posts, or dim headlights can all be signs that your battery is waving goodbye.

Or, you can get a complimentary battery check at your nearest Firestone Complete Auto Care. Our equipment can see how much charge is left in your battery. Visit us for a complimentary battery check and, if needed, get your Honda Civic a replacement battery. Automotive batteries are just one of our many areas of expertise. Our technicians are well-acquainted with Honda’s service specs for Civic battery CCAs and reserve capacity. Get help figuring out the battery size that fits your car perfectly, and schedule an appointment today for a quick car battery replacement.

Is There a DieHard Battery for Civics?

We only want what’s best for your Honda Civic, which is why we exclusively carry the best. Your vehicle needs a reliable, durable and powerful battery in extremely hot and cold environments. DieHard batteries shatter expectations using state-of-the-art advancements to fuel the growing power demands of modern vehicles A DieHard battery isn't an ordinary car battery. It's extraordinary. Choose a DieHard battery for your Honda Civic and get behind the wheel with confidence. Why? Because performance will be there when you need it most. That’s why you should choose batteries from Firestone Complete Auto Care.

Making Your Civic’s New Battery Last

Have you recently had a fresh battery installed in your Honda Civic? Great job! Give your new car battery the best start with proper care. Give your new battery a hand by decreasing the number of short trips you take, keeping the battery posts corrosion-free, and not using electronics such as the radio and power outlets when the engine is off.

Answers to Your Civic Car Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a battery question that's unique to your Honda Civic battery, visit your nearest store. Our technicians have the answers.

  • Why won’t my Civic battery hold a charge? A car battery that needs to be jump-started every time is as good as dead. The battery might be old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop by for a complimentary battery check at your favorite Firestone Complete Auto Care to learn more about the state of your battery.

  • What happens to my old Civic battery? We recycle it, taking care of both your car and the Earth.

  • How much will replacing my Honda Civic’s battery cost if I get a DieHard battery? You can find affordable Civic batteries by using one of our car battery coupons, when available. Plus, every DieHard battery comes with extra coverage thanks to DieHard Assurance and a free replacement warranty.

Get a Battery for Your Honda Civic

Don’t let a dead battery stop you. Shop replacement car batteries for your 2002 Honda Civic at Firestone Complete Auto Care.

Shop Batteries


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Civic size battery honda 2002

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