Bought old battery 6/23/15 and been testing it every few months with a cheap amazon battery tester. It is still usable but CCA is testing at 485 for a 710 CCA battery.
Still cranks fast but wanted to change it out before it got too low. Last week I bought a replacement from Walmart (EverStart Platinum AGM) and then reset the MPG counter and now I'm easily getting 2 mpg+ driving my usual routes. Went from 17.8 to 20.3 with no difference in driving . I guess the alternator may have been pulling down the gas mileage. New battery tests at 820cca and is rated 710cca.
Still cranks fast but wanted to change it out before it got too low. Last week I bought a replacement from Walmart (EverStart Platinum AGM) and then reset the MPG counter and now I'm easily getting 2 mpg+ driving my usual routes. Went from 17.8 to 20.3 with no difference in driving . I guess the alternator may have been pulling down the gas mileage. New battery tests at 820cca and is rated 710cca.