What I found is that if you run too many things at once, the battery loses range quickly almost to the point of turtling. In this cold weather, it is taking longer to charge my 2020 Nissan Leaf. The dealer turned off my charging timers because my car was not fully charged--despite being plugged into my new appliance outlet (I had to install because 16 hrs of trickle charge was impractical). Next the dealer turned off my auto lights, so I've been manually turning them on at night. I also found that the climate control reduces my range mileage by 10--if I turn it on to defrost my windows, my range drops from 118 to 108--so I only turn it on when my windshield fogs, then quickly back off so my miles return back to 118. I've even stopped using my external CD player, because that also was draining my battery. So I pick & choose which things will be turned on, so I will not lose too much mileage--Driving above 70 miles also quickly drains my milage range. I can drop from 125 mile range to 80 mile range fairly quickly if I'm on the fast lane on the freeway. It dropped almost to 30 mile range & I was tempted to head back home, until I pulled off the freeway & my mileage shot back up to 50 mile range. I trickled charged my car at work and it was back at 80 mile range--enough to drive home at night using only the headlights--all accessories was off.
I just didn't want to repeat my car turtling & shutting down to strand me 15 miles from my house. This occurred w/in my first 6 months of ownership of the test driving car from the dealer which I bought in August 2022--it broke down Jan 2023. By the time the tow truck driver showed up, the 12 volt battery had died & I couldn't open the charging hatch once AAA towed me to the Chademo chargers at Walmart in San Leandro. It was raining, it was night time, it was a 2 hr wait for the tow-truck driver & my car had to be pushed to a safe spot to park, before it completely locked down. This was $$ out of pocket because the first tow was beyond 5 miles. & the 2nd tow to my home was completely out of pocket because AAA only paid for one 5 mile trip. Then it was another out of pocket expense to have it towed to the dealership using the Nissan Towing Service supplied by the dealership when I first bought the car. The Fremont dealership is also beyond the 5 mile tow limit. Turns out, part of my computer had to be replaced since they could not upload the complete history when they diagnosed my car.
When my car lit all my dashlights, I had my car towed to the dealership before my next tire rotation appt. They asked why my car was being towed there, I said Xmas. So when they attempted to start my car, all the dash lights came on. Turns out I had bad cells & my battery needed replacing--good thing I extended my warranty so that the battery was replaced for free, but I was w/o a car for the entire month of August 2024. So when my car was acting up this winter, I was afraid of another turtle incident. Of course, the tech could not recreate the conditions when my car almost turtling in San Leandro on my drive home from work. It turtled but I could still drive 60-80 mph on the way home. That's when I read on the forum about the battery discharging more rapidly during cold winter months. Hence the practice of picking & choosing what to turn on to minimize any affect on my mileage range.