Last year I luckily received a low battery warning around 3 years after purchasing my 2020 MY. I called the mobile service tech who examined my car and said that the 12v battery needed to be replaced and he did so. I leave my car plugged in to my level 2 charger when I go away for up to 4 months every year. He told me to buy a trickle charger for my 12v battery and use it when storing my car for long periods. I also have a 2020 Chevy Bolt that I do trickle charge when I am gone but am not aware of needing to trickle charge my MY while storing for months. Any comments or suggestions?
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Is 12v trickle charge needed during storage?
- Thread starter BI_EV_Solar
- Start date
It kind of makes sense but the dc to dc charger should kick in as needed to top off the 12v battery. I do use a battery maintainer for the motorcycles. Amazon Clinic
I still have had to replace batteries on the bike and usually 3 years on any ICE car that I've owned. Our MX would require a fresh battery every two years right around July. Biggest lead acid battery killer is heat. There are post here where owners have experienced issues using a lithium 12v battery. Not knowing how sensitive the battery charging system is in the Tesla, I would be concerned how it may read the higher voltage that a tender puts out for any length of time.
I still have had to replace batteries on the bike and usually 3 years on any ICE car that I've owned. Our MX would require a fresh battery every two years right around July. Biggest lead acid battery killer is heat. There are post here where owners have experienced issues using a lithium 12v battery. Not knowing how sensitive the battery charging system is in the Tesla, I would be concerned how it may read the higher voltage that a tender puts out for any length of time.
ATPMSD
Active Member
I agree with @E90alex, it does not make sense to use a truckle charger if you can plug the car into an L2 source. In fact, if you leave Sentry and Overheat protection off, the typical loss for a Model Y is about 1% / week, so you will lose <20% in 4-months (test this yourself).
In any case I would plug the car in, charge to 80% then set the SOC back to 50%. Don’t check the car everyday, once a month will be plenty if you feel the need!
In any case I would plug the car in, charge to 80% then set the SOC back to 50%. Don’t check the car everyday, once a month will be plenty if you feel the need!
Why is am I not surprised that a Tesla Mobile Service tech suggested this. He should know better.
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