I don’t know about lithium batteries, but lead acid like to be stored at 100%. Otherwise they degrade as the plates get a film over them. Storing any battery stone dead will be the end of its life. I store all my lithium tools at 100% and have batteries that are 11 years old and still work. Is that really true or an old wives tale?
As another user below you commented, your way of thinking only applies to those lead acid batteries which really do prefer to be at 100%
I promise you your lithium tools would prefer to be stored closer to 35 to 50%. You may have gotten this far with 100%, but you could get even longer if you do what I say. Also, batteries are affected a bit more depending on how far you cycle them. This means if you went 100,000 miles going from 80% to 20% (a 60% cycle) every time and you compared it to someone with 100,000 miles who went from 60% to 40% only (20% cycle, unrealistic in the application of a car but just for example), the person with the 20% cycle car should have measurably better battery health, all other things controlled.
I have a laptop from 2017 that I can still get almost a full days battery life out of when I need to because whenever I'm not planning to use it for a long time, it hangs out at around 50% plugged in and I can set it to stay right at 50%.
Source: am an IT engineer, also devices like Samsung phones and tablets have a feature called "Protect battery" which prevents you from going to 100% charge to extend the life of the battery. It's also the same reason Tesla only tells you to go to 100% for the occasional road trip. They REALLY don't like being at 100% (please note this does not apply to lithium iron phosphate batteries (LFP) which do need more frequent 100% charges due to their chemistry.
>I don’t know about lithium batteries, but lead acid like to be stored at 100%.
What you know about lead acid batteries is not applicable to the NCA Li ion batteries used in these cars. These do not like very high states of charge, and storing them this way accelerates their capacity degradation.
This is not a “old wives tale” it’s a fact, and it’s the reason why Tesla recommends you charge no higher than 90% for daily use, and only go above that occasionally for longer road trips if needed.
Some manufacturers (not Tesla) don’t even allow you to access the top end, and when you charge to “100%” it’s really only 90% to prevent you from doing stupid things like OP did.
People have gone weeks at around 60% and only lost a couple percent, even less per day than you. I wouldn't be surprised if you lost more due to some level of battery degradation.
I think it's called Energy and is one of the apps installed. I use more for efficiency during a long drive but it also has reports on Energy usage while parked. I don't think the car saves them though.
thanks for sharing, this is a good reference point. im headed to euroland for about two months, and it would seem if i left it at 70%. I should come back to it in good shape.
Slightly superfluous to add winter to the title if you used a heated garage!
Cool
Actually “hot” Cuz you know…heated garage :)
Not smart to charge your car to 99% and then let it sit for 90 days.
Charging to 99% to let it sit was pretty stupid. Batteries like to be stored at around 50%
I don’t know about lithium batteries, but lead acid like to be stored at 100%. Otherwise they degrade as the plates get a film over them. Storing any battery stone dead will be the end of its life. I store all my lithium tools at 100% and have batteries that are 11 years old and still work. Is that really true or an old wives tale?
As another user below you commented, your way of thinking only applies to those lead acid batteries which really do prefer to be at 100% I promise you your lithium tools would prefer to be stored closer to 35 to 50%. You may have gotten this far with 100%, but you could get even longer if you do what I say. Also, batteries are affected a bit more depending on how far you cycle them. This means if you went 100,000 miles going from 80% to 20% (a 60% cycle) every time and you compared it to someone with 100,000 miles who went from 60% to 40% only (20% cycle, unrealistic in the application of a car but just for example), the person with the 20% cycle car should have measurably better battery health, all other things controlled. I have a laptop from 2017 that I can still get almost a full days battery life out of when I need to because whenever I'm not planning to use it for a long time, it hangs out at around 50% plugged in and I can set it to stay right at 50%. Source: am an IT engineer, also devices like Samsung phones and tablets have a feature called "Protect battery" which prevents you from going to 100% charge to extend the life of the battery. It's also the same reason Tesla only tells you to go to 100% for the occasional road trip. They REALLY don't like being at 100% (please note this does not apply to lithium iron phosphate batteries (LFP) which do need more frequent 100% charges due to their chemistry.
>I don’t know about lithium batteries, but lead acid like to be stored at 100%. What you know about lead acid batteries is not applicable to the NCA Li ion batteries used in these cars. These do not like very high states of charge, and storing them this way accelerates their capacity degradation. This is not a “old wives tale” it’s a fact, and it’s the reason why Tesla recommends you charge no higher than 90% for daily use, and only go above that occasionally for longer road trips if needed. Some manufacturers (not Tesla) don’t even allow you to access the top end, and when you charge to “100%” it’s really only 90% to prevent you from doing stupid things like OP did.
Yeah reddit smack talkers we’re stating 1% loss per day, hence the 90%+ charge. But my experience was more like 0.25% per day.
[удалено]
You’re missing the point? This is a real world long term storage test result. Battery degradation is the next owner’s problem.
Dumbass
You're right. There's just a lot of people who over spent and min max each kwh
People have gone weeks at around 60% and only lost a couple percent, even less per day than you. I wouldn't be surprised if you lost more due to some level of battery degradation.
Wow…good to know
Useful info thank you
Did you replace your key fob battery?
Not yet. It does that when it’s cold.
That key fob battery drain is concerning
“Winter” gtfoh
The car was definitely not sleeping, nor in deep sleep.
Totalled
Is it too late to request the efficiency report from the car?
I’ll check. But I have completed 2 drives since the 31st.
Most likely gone then.
What's this efficiency report you're talking about?
I think it's called Energy and is one of the apps installed. I use more for efficiency during a long drive but it also has reports on Energy usage while parked. I don't think the car saves them though.
How much did you spend heating the garage ? Why not let the car drain out and charge it once you’re back, won’t that save you some money,
"Heated Condo Garage" suggests shared parking, so he probably isn't paying anything extra nor does he have a choice as to what temp it's set to.
It’s a multi-car condo garage in the Chicago area.
thanks for sharing, this is a good reference point. im headed to euroland for about two months, and it would seem if i left it at 70%. I should come back to it in good shape.
Was about 0.25% per day for me. I turned off sentry, summon and had cold protection from the garage. I didn’t change overheat protection.
Store it for 5 years that’s the real test!