The issue is most likely that the 12v battery only charges when the
vehicle is running - not when the vehicle is charging the main battery.
This is why you will find reports of EVSE "damaging" the 12V battery.
Of course, I am welcome to be corrected. :)
Cheers, Peter
On 12/15/20 6:12 AM, Jay Summet via EV wrote:
On 12/15/20 12:59 AM, Lee Hart via EV wrote:
Jay Summet via EV wrote:
Our Leaf's OEM 12v battery was dead after 4 years....I replaced it
with an AGM, hopefully that one will last longer.
Our 2013 Leaf is still running on its original 12v battery. So far,
so good... Of course, starting the Leaf is pretty easy on the
battery, even in Minnesota winters. :-)
I've read a lot of posts on the Nissan Leaf forums about people having
issues with the accessory battery giving out after only 3-5 years.
Symptoms usually include random error codes being thrown by the
computer and "weird" behavior on startup due to the low voltage sag.
Our 2015 had blue crystals coming out around the battery post.
https://www.summet.com/blog/2019/05/03/nissan-leaf-12-volt-accessory-battery-replacement/
Jay
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