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Re: 12 Volt Lead Acid Battery Replacement

Posted: Tue Jan 23, 2018 11:52 am
by Nubo
powersurge wrote:I agree with everything you said..... I said that you cannot estimate a battery's life span by time (years). Yes, I know that the health of the battery is a load test.
Not being argumentative; I was just providing more detail for the thread. Given the number of recommendations for checking resting voltage on this forum, I think the idea of load-testing is something that a lot of folks don't consider important. I know I didn't fully recognize the importance until one of my batteries failed. I spent a couple of weeks troubleshooting (clearing codes and looking for drains) and things weren't making sense. I finally cobbled up a load to place on the battery while I checked the voltage, and BINGO the battery would fall flat on its face; mystery solved.

In fact, reading this thread reminded me that I should really have a dedicated 12V load-test; that's how I know the price as I just got it a few days ago :)

Re: 12 Volt Lead Acid Battery Replacement

Posted: Tue Jan 23, 2018 2:14 pm
by LeftieBiker
Many auto parts stores will do a free load test. The question is whether or not they would do anything to harm a Leaf.

Re: 12 Volt Lead Acid Battery Replacement

Posted: Tue Jan 23, 2018 7:33 pm
by Joe6pack
FWIW, I am 5.5 years and 56,000 miles in and still on my original 12V battery. I am the original owner. Lately, I have considered replacing it preemptively. I'd rather not get stuck.

Re: 12 Volt Lead Acid Battery Replacement

Posted: Tue Jan 23, 2018 8:16 pm
by Evoforce
Joe6pack wrote:FWIW, I am 5.5 years and 56,000 miles in and still on my original 12V battery. I am the original owner. Lately, I have considered replacing it preemptively. I'd rather not get stuck.
Just check your current batteries condition. If you don't know how or have the tools, have a free check done at most auto part stores. Getting a new one doesn't guarantee whether it will last months or years. If it isn't broke, don't fix it!

Re: 12 Volt Lead Acid Battery Replacement

Posted: Tue Jan 23, 2018 11:18 pm
by LeftieBiker
If it isn't broke, don't fix it!
If it is past its service life expectancy, however, replacement becomes a good option. Just don't replace it with a crappy battery.

Re: 12 Volt Lead Acid Battery Replacement

Posted: Wed Jan 24, 2018 6:13 am
by powersurge
I cannot see a "preemptive" battery change. A good battery, as seen by a load test, will stay that way for a long time. Regular checking (every 3-6 months) will notice deterioration with a good enough warning.

One of my favorite tools is the multimeter and the old Harbor freight battery load tester for about $20.

CHEAP TIP: With just a multimeter (most people have them already), you can first do a "cheap" load test by measuring the battery voltage (with the car off). Then turn on your headlights, and measure the battery voltage for a minute or two..... See if it drops significantly....

Re: 12 Volt Lead Acid Battery Replacement

Posted: Wed Jan 24, 2018 3:28 pm
by LeftieBiker
As has been noted before, old lead acid batteries accumulate lead sludge at the bottom of the battery. This can result in an internal short, with zero warning.

Re: 12 Volt Lead Acid Battery Replacement

Posted: Fri Jan 26, 2018 7:43 am
by arnis
Lead flaking is a problem of overcharged battery. Undercharged batteries accumulate sulfite on the plates.

Re: 12 Volt Lead Acid Battery Replacement

Posted: Fri Jan 26, 2018 4:32 pm
by Evoforce
Powersurge +1. Shocking but true, we are on the same page with this one! Kudos!

Re: 12 Volt Lead Acid Battery Replacement

Posted: Fri Jan 26, 2018 4:51 pm
by LeftieBiker
arnis wrote:Lead flaking is a problem of overcharged battery. Undercharged batteries accumulate sulfite on the plates.
I think that lots of vibration (like from bad roads) can also cause flaking.