Page 2 of 2

Re: 12v Battery Replacement Reminder

Posted: Mon Sep 02, 2019 3:33 pm
by LeftieBiker
topped it off with water,

Topping the OEM batteries off with (DISTILLED only!) water annually should be in this reminder as well. It really extends battery life.

Re: 12v Battery Replacement Reminder

Posted: Tue Sep 03, 2019 7:40 am
by SalisburySam
I can’t dispute the advice of others to change 12v batteries after 2-3 years, but that has not been a need for me at all. Still on original 12v in my 2012 SL. Car has not been garaged for the last 14 months so the solar panel on its hatch may be trickle-charging it. When I do park it in the garage to charge overnight, I connect the 12v to a batter tender as well, and I keep the fluid topped. Seems to be working well. That said, I’ve only had one vehicle 12v battery die quickly (less than 6 months) and it was in a new vehicle and replaced under warranty. My newest vehicle is my 23rd, and all had their original 12v batteries when traded usually between their 4th and 9th year of life with me. One exception, my 1964 Ford Thunderbird. It gets driven very little but over the decades I’ve replaced the 12v a few times even though I always keep it on a battery tender. I’ve owned most of these cars living in Florida, the Midwest, and now North Carolina. Either I’ve been unusually lucky, or the 12v batteries in the cars I’ve purchased were a cut above in longevity for whatever reason.

Re: 12v Battery Replacement Reminder

Posted: Sun Sep 22, 2019 8:44 am
by Bandita11
Thanks for all your posts. I've been driving a 2011 Leaf for about a year now and love it. Bought used in 2017 for $8500. Seriously thinking about buying another because I'm storing it for my son, who is out of state now. The 12 volt has started to degrade to a point where the car won't go into gear. I topped off with distilled water recently and charged it, and it ran fine for week or two, but the battery continues to degrade and won't go into drive or activate parking brake. It's the original battery, made in Japan. Does it really need to be replaced? I'd like to keep the original battery but 8 years is a long time. Vehicle has about 80K miles on it. Sacramento CA. We had a brutal summer with many 100+ days so I should have checked the fluid levels earlier.

Re: 12v Battery Replacement Reminder

Posted: Thu Oct 10, 2019 2:30 pm
by dex8425
I'm also on my original 12V battery. Our ICE is newer and I've had to replace the Ford Escape battery twice since 2015, but we put more miles on the ICE. Leaf is a 2012. Was in Seattle for her first 12k miles, now Minnesota.

Re: 12v Battery Replacement Reminder

Posted: Fri Oct 11, 2019 7:50 am
by erco
Bandita11 wrote:
Sun Sep 22, 2019 8:44 am
It's the original battery, made in Japan. Does it really need to be replaced? I'd like to keep the original battery but 8 years is a long time.
Sounds like you answered your own question IMHO.