Anyone run into issues using accessories (air compressor, etc) or powering audio amplifiers with the new 12v lithium battery? I read it's actually 15.5v so it's higher than a lead acid peak voltage which most accessories/amps were designed for. I'd assume the voltage goes even higher when charging the new battery while it's in use.
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Powering accessories and audio off the new 12v lithium battery
- Thread starter nvesprini
- Start date
The Tesla Model Y Owner's manual states that for Model Y vehicles built after November 2021 that aftermarket 12V/120V power inverters need to be able to operate with 16V supply voltages.
fiehlsport
Tire Guy
Now I'm wondering if my old Escort 8500 radar detector will play nice with my upcoming model Y. Anyone have experience with radar detectors in these cars?
Yep, I heard of people having trouble with their paddle board inflation pumps. As said above, they need to support 16V which is higher than what lead acid 12V batteries typically work on, even when charging. I suppose the alternative is to find a power bank that can charge at 16V but provide a lower, more standard 12V.
Occhis
Member
Yes; a 15.5V lithium low voltage battery is now standard on all Tesla Model 3, Model Y, also refreshed Model S, Model X.
just curious if it is LiFePO4 and how cold weather is dealt with (e.g. -20F). My understanding is that trying to charge such batteries below 32F is death), yet I don't think one can afford to heat the battery... (think leaving the car at the airport for 30days in -20F weather...)
E90alex
Active Member
I don't know. There is a series of tear down videos on the new 15.5V battery module that shows that the control board has a thermal cutoff switch to prevent charging when the temperature is too low.
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