Welcome to Tesla Motors Club
Discuss Tesla's Model S, Model 3, Model X, Model Y, Cybertruck, Roadster and More.
Register

12v 150w pure sine wave inverter causes MCU to freak out!

Lectric_Agent

2015 S85 AP1
May 25, 2019
96
46
Orange County
So I recently bought a 150w 12v pure sine wave inverter to be able to charge my laptop and drone batteries. My laptop only uses 60w and the drone charger uses 87w. When I plug it in, the MCU freaks out and is unusable. Watch the video for reference. Any ideas on what could cause this? Maybe my 12v battery is going bad? I haven't received any error messages

my MCU was replaced last year so it shouldn’t be the issue

 

kdday

Active Member
Oct 29, 2016
1,144
2,554
AZ
What power source do you have your inverter connected to? If on the same power feed as MCU, it could be a power or voltage drop issue.
 

FatherTo1

Member
Mar 7, 2019
537
360
California
@Lectric_Agent, you really had me worried. I just bought a 300W inverter last week for a planned camping trip. I know the 12V will only provide 150W max and that will be plenty for our e-cooler and my CPAP. However, I hadn’t tested the inverter yet...until now, after seeing your post.

As I’m typing this, I have the S in Camp Mode, 68W eCooler and 65W work laptop both plugged into the inverter while I’m watching Hulu on the screen. It has been about 10 minutes and no issues so far.

EDIT: Like OP, I also made sure to get a pure sine-wave inverter.

12EEA871-FEA5-4566-8BF9-212274690F3F.jpeg
 
Last edited:

About Us

Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.

Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


SUPPORT TMC
Top