⚠️ What Size Battery Fits My Honda Civic? ⚠️

The Honda Civic was first introduced to the public as a 1973 model in 1972. As of this writing, the Civic is now in its 11th 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 11 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 its battery needs over the years, regardless of the generation of car or size of engine.

We have a fitment guide on every page that can help you identify the correct battery for your Civic, but in many cases, the OPTIMA D51R is a direct-fit upgrade. 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 battery on 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. That 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.

Starting in the 2016 model year, Honda Civics with a 2.0-liter engine may have come equipped with either the Group 51 or H5 battery, for which OPTIMA offers direct-fit upgrades. We wouldn't recommend using a smaller battery than what came in your Civic, unless the cranking amps and reserve capacity are equal to or greater than the specifications on the battery being replaced. 

Honda started equipping all of their Civics with an H5 starting in the 2022 model year. The reason is that newer cars are just more demanding from an electrical standpoint. For the Civic, it's not about more cranking power, because the engines are the same size. It's more a matter of vehicles and their owners using more battery power when the engine isn't running with increasingly-demanding electrical accessories. The good news is that OPTIMA batteries offer plenty of power to keep you covered and we can ship directly to your doorstep (in the lower-48) for free!

Check out some of the coolest Honda Civics we've seen over the years at tracks we sponsor and events we've attended below-