Since the 151R batteries are so expensive now, has anyone tried the U1/U1R group (for lawn mowers)? Some of these provide 300+ CCAs. Any cons using these in a fit?

 

51R is a wiser choice IMO.

 

51R is not much cheaper nowadays either, but a U1R is significantly cheaper, for example a 275 CCA U1R (which should be sufficient for the fit) only sells for $35. Walmart used to make 300+ CCA U1Rs, but it seems they have stopped making those. Autozone has these for ~$59. I just don't know if the U1R being a lawn mower battery will suffer from being charged through the Fit's alternator or not. Longevity wise, you can buy 3-4 U1Rs for the price of one 151R or 51R. If each can hold for 3-4 years, it will be a better deal, so I am wondering if anyone has any experience with these. There was one post about it for a GD Fit, but no update since.

 

I would not do it. The 51R has like 500CCA. The terminals on the U1R are not the same as 51R or 151R.

Don't cheap out on the battery or you might get stuck somewhere you don't want to get stuck.

 

The terminals will need a flag-to-post adapter, I guess that's another $10 at least (one time expense though). This Autozone U1R has 350 CCA ($62.99, surprised Duralast Gold only has 3-month warranty):
https://www.autozone.com/miscellaneo...r-3/335291_0_0

The cheapest 51R I can find currently is this ($109.76):
https://www.walmart.com/ip/EverStart...CCA/1489211668

I guess the $36.77 difference is probably not worth it, if wanting to go with the 350 CCA U1R (instead of the Walmart 275 CCA for $35). Still curious what are the potential differences though other than the CCA rating and terminals.