Yes, many threads on it, some don't agree with it.
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Yup. The 51R is a lawnmower battery. It comes standard in many riding mowers, and the CR-V. In this case, bigger does mean better. I just finished upgrading my '07 to a Group 24F. The write-up is here: Gen 3 Group 24F Battery Upgrade .
Of course, my '07 is going to be a little different from your 2018. You can find all you need to know for your late model V in this main thread here:
Larger Group 24 Battery Install .
It will not void your warranty, and it will not harm your alternator, which cannot tell what size the battery is, and will behave normally. I went with an AGM battery. My two previous 512R's lasted less than 1.5 years each. I'm also installing a NOCO Genius 5 smart battery tender. Since I retired, I don't drive as often, so I will keep this plugged in to 110v, and it will keep the battery healthy all the time. All I have to do is unplug it when I go out, or else get a really, really long extension cord.
Actually, I think the install is easier for the Gen 5 than for my Gen 3. Read through the above thread's 14 or so pages and you'll find info for Gen 4 and 5 installs that should give you all you need to know. It does require a little work, but it's not brain surgery. I even used Odyssey parts to make it all officially Honda issue. Good luck, and let us know what you decide to do.
Of course, my '07 is going to be a little different from your 2018. You can find all you need to know for your late model V in this main thread here:
Larger Group 24 Battery Install .
It will not void your warranty, and it will not harm your alternator, which cannot tell what size the battery is, and will behave normally. I went with an AGM battery. My two previous 512R's lasted less than 1.5 years each. I'm also installing a NOCO Genius 5 smart battery tender. Since I retired, I don't drive as often, so I will keep this plugged in to 110v, and it will keep the battery healthy all the time. All I have to do is unplug it when I go out, or else get a really, really long extension cord.
Actually, I think the install is easier for the Gen 5 than for my Gen 3. Read through the above thread's 14 or so pages and you'll find info for Gen 4 and 5 installs that should give you all you need to know. It does require a little work, but it's not brain surgery. I even used Odyssey parts to make it all officially Honda issue. Good luck, and let us know what you decide to do.
Yep... hot weather is a primary failure accelerator on batteries... followed closely by being in a persistent undercharged state (ie: below 40% of saturation charge).
1) The amount of charge at full charge actually declines with temperature in flooded cell batteries.
2) Hot weather tends to cause evaporation of the electrolyte as well... and so the cell electrolyte in each cell needs to be monitored periodically, and topped off with a little distilled water if the levels are low.
3) Hot weather tends to also sulfate the plates a bit faster as well, and plate sulfation is slow persistent killer of all batteries.
All of the above becomes a real problem for the infrequent or short trip driver... since the battery will often not be fully recharged after a drive.
And NO... a bigger battery will not change any of the above. People keep pressing this theory but it is simply not factual, and goes to a misunderstanding of how flooded cell batteries actually work. All a bigger battery does for you is give you another 20-30% of reserve charge (good for about 10 extra days on a gen5 CRV before the battery is dead, and the extra CCA you get from a bigger battery is wasted on a CRV engine. Better to just put a higher quality 51R in that gives you more reserve capacity charge in the same footprint.
An AGM battery will address some of the issues with heat better. , but they too have their own idiosyncrasies to deal with as well... so you need to know what you are buying and what you are not. In my view.. AGMs do not provide enough benefit for the additional cost required. Better investment to simply buy a premium 51R which will have better specifications than the stock OEMs, and most after market 51Rs.
Of course there is a school of thought that just ignores the battery, then complains when it dies before it's expected life span too.
Of course you can put any battery in your vehicle that you like, your vehicle, your choice.Yup. The 51R is a lawnmower battery. It comes standard in many riding mowers, and the CR-V. In this case, bigger does mean better. I just finished upgrading my '07 to a Group 24F. The write-up is here: Gen 3 Group 24F Battery Upgrade .
Of course, my '07 is going to be a little different from your 2018. You can find all you need to know for your late model V in this main thread here:
Larger Group 24 Battery Install .
It will not void your warranty, and it will not harm your alternator, which cannot tell what size the battery is, and will behave normally. I went with an AGM battery. My two previous 512R's lasted less than 1.5 years each. I'm also installing a NOCO Genius 5 smart battery tender. Since I retired, I don't drive as often, so I will keep this plugged in to 110v, and it will keep the battery healthy all the time. All I have to do is unplug it when I go out, or else get a really, really long extension cord.
Actually, I think the install is easier for the Gen 5 than for my Gen 3. Read through the above thread's 14 or so pages and you'll find info for Gen 4 and 5 installs that should give you all you need to know. It does require a little work, but it's not brain surgery. I even used Odyssey parts to make it all officially Honda issue. Good luck, and let us know what you decide to do.
But a Group 24 (or similar) is not going to buy you much in your gen3 CRV. A) you do not need the extra CCA, so that is a waste. B) a 24 only gives you about 25% more reserve charge capacity. C) gen3s have pretty low normal parasitic.. so the only thing you really have to deal with in a gen3 is the normal slow self-drain characteristics of the battery itself and the fact that every battery made is a ticking clock that ticks down persistently until it fails some years after the electrolyte is activated.
A gen5 benefits more from installing a larger battery, simply for the extra reserve capacity, which can extend the period of time before a sitting CRV depletes it's battery due to normal power down parasitics. But even then, the difference is small... 40-45 days idle vs 30-35 with a stock 51R installed.
Early battery failure is much more about allowing a battery to sit at a persistently low charge state, which accelerates plate sulfation + lack of any periodic checks and maintenance on these batteries.. which are not actually maintenance free. This is true.. regardless of the size battery you choose to install. Which is why periodic maintenance checks and use of a smart charger is such a benefit for motor vehicle battery life expectancy.
Don't they make cordless chargers now? In fact the 2020 Touring comes with one..... Since I retired, I don't drive as often, so I will keep this plugged in to 110v, and it will keep the battery healthy all the time. All I have to do is unplug it when I go out, or else get a really, really long extension cord.
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Thanks for the information. There are a lot of links involved that I had never explored.Yup. The 51R is a lawnmower battery. It comes standard in many riding mowers, and the CR-V. In this case, bigger does mean better. I just finished upgrading my '07 to a Group 24F. The write-up is here: Gen 3 Group 24F Battery Upgrade .
Of course, my '07 is going to be a little different from your 2018. You can find all you need to know for your late model V in this main thread here:
Larger Group 24 Battery Install .
It will not void your warranty, and it will not harm your alternator, which cannot tell what size the battery is, and will behave normally. I went with an AGM battery. My two previous 512R's lasted less than 1.5 years each. I'm also installing a NOCO Genius 5 smart battery tender. Since I retired, I don't drive as often, so I will keep this plugged in to 110v, and it will keep the battery healthy all the time. All I have to do is unplug it when I go out, or else get a really, really long extension cord.
Actually, I think the install is easier for the Gen 5 than for my Gen 3. Read through the above thread's 14 or so pages and you'll find info for Gen 4 and 5 installs that should give you all you need to know. It does require a little work, but it's not brain surgery. I even used Odyssey parts to make it all officially Honda issue. Good luck, and let us know what you decide to do.
But I still haven't seen any posts regarding actually converting a Gen 5 CRV to use a larger battery.
The 2020 model year comes with a larger battery, likely on account of the start/stop function but doubt it would fit in an earlier model. Heat is the big battery killer though. In Ontario I normally get at least 5 years, even from my dinky motorcycle battery or my
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vehicle batteries, however I use a battery maintainer on the bike over the winter and when I don’t plan on driving any vehicle for over a week.(Have 3 maintainers..picked up the third one during Covid)
Unsure what group but 450 cold cranking amps and A 57Ah battery with a notification for start stop systems. I do believe that keeping any battery over 80% charge is essential for long life.
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