How Old is YOUR 12 volt Battery?

[downeykp]

My May 2011 leaf has original battery. I have never checked it. We are at 32,000 mi. and 8 bars.

[Joe6pack]

I am still on my original 12 V battery. It's a 2012 with around 57,000 miles. It is on its second battery pack.

[finman100]

OEM battery from factory here. 43,000 miles and almost 4 years. 2014 SV. Haven't checked it but one time, 3 years ago, when i installed a battery pigtail to be able to plug into a battery tender, which I've not used yet.

[PatricioEV]

'12 built 11/11, 89k miles... still on original 12v with no problems. Hardly gets driven anymore. I bought a B250e last month and kept the LEAF around for my son (who hates to drive). Frankly, other than tires, wiper blades, and cabin air filter, I've not replaced anything. The original traction pack was replaced under warranty a couple of years back. Car still drives great and has zero issues.

[ahagge]

2011 SL with 106,500+ miles - still on original battery AND have had an ELM-327 Bluetooth OBD-II diagnostic dongle plugged in pretty much 24x7 for the past 5 years or so. Car will be 7 years old in early July.

Hopefully a useful data point.

For anybody who's replaced their 12 battery - can you let us know what you replaced it with (Brand and Model, and price if known)? I'm sure it will help those who will be needing to replace soon. Thanks!

[brotherjethro]

I bought my '13 used in Spring 2017. It had what appeared to be the original OEM battery in it. Although it seemed to work okay, it measured a bit low. As a new owner and frequent forum reader, I replaced the battery as a precautionary measure within a few weeks of buying the car.

The replacement is a 51R from Costco -- I forget the price. Since replacing it, I have babied it by topping it off with a Battery Tender Jr every few days. (I ran the connector into the charge port area, so I can charge without opening the hood).

[edatoakrun]

The 2018 LEAF owner's manual (IIRC) states that frequent cycling of the charger after charge is complete is what is most harmful to the 12 V battery.

I did this frequently with my 2011, by often leaving the car plugged in for many days after the "80%" charge level was reached, with the timer set, and my battery failed (replaced by Nissan under warranty) during its third winter.

I now try to (and usually do) unplug my LEAF the day after charging, and the battery has held a charge for over four years (with a code reader plugged in) and no other care.

[JeffnReno]

The 2018 LEAF owner's manual (IIRC) states that frequent cycling of the charger after charge is complete is what is most harmful to the 12 V battery.

I did this frequently with my 2011, by often leaving the car plugged in for many days after the "80%" charge level was reached, with the timer set, and my battery failed (replaced by Nissan under warranty) during its third winter.

I now try to (and usually do) unplug my LEAF the day after charging, and the battery has held a charge for over four years (with a code reader plugged in) and no other care.

I would unplug but when its 10 degrees in the garage, I like to prewarm the car before driving it using the charger power rather than battery range. My 12v battery is getting a charge externally at the moment since it dies on me yesterday. I'm hoping it will charge up and be good to go once again.

[LeftieBiker]

I've found that if you plug in a maintainer with the EVSE there is no issue at all, even over several days, with leaving the EVSE plugged in, beyond the minor inconvenience of plugging in and unplugging the maintainer. I have mine wired to a connector in the charge port, for minimum hassle.

[lolooz]

Our 12v battery finally died yesterday with just over 62k miles on the car. It was new July 14 2011-- just over 7 years. And sadly, we didn't check the electrolyte level either! Car is in the San Diego area. Replaced with a battery from Costco for about $75 after $15 trade-in credit.