Has anyone replaced their 51R with a larger battery?

BobInPa said:

I’ve had it with the 51R battery size chosen by Honda for the Gen 5 CRV. I am on my second Honda battery, the first one was replaced under my New Car Warranty in September 2018. I know that it is totally my fiscal responsibility to replace my current battery, so I’m not going to mess around with another Honda battery. My 2017 EXL has been jump started 7 times in the last 3.5 years, way too often as far as I’m concerned. Actually each of my Honda batteries made it one whole year before they started failing, so it is really 7 jump starts in 1.5 years. So I want to replace my 51R battery with a larger battery with greater endurance.

Has anyone replaced their 51R with a larger battery that does not require any modifications to the existing battery containing hardware? Hardware like tie-downs, trays, cables, hood, etc.

I know this subject has been discussed many times before in the last 3.5 years but I don’t remember reading an actual answer to my question.

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kloker said:

Interesting! I l looked up the 4A designation and it shows a small motorcycle battery. According to the Advance Auto Parts site, the correct battery for the 2020 1.5Lt is the Group Size H5. Most of the online sites do not yet show a listing for this vehicle, and the ones that do show the A4, which is not a BCI number as far as I can find, and also not the correct battery for the car. I'm sure the A4 designation has some significance, but all else I've found shows the Group SIze H5. THe H5 appears to be a bit smaller than the Group 35 but very close. Same on specs.
Here's a link: Advance Auto Parts - Down for Maintenance .

That's the only listing they showed for the car. Still, a considerably larger battery than the 51R.

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