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

[Lectric_Agent]

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

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[Tam]

...the MCU freaks out and is unusable....

It should be fine. I saw you were able to fix it in the end of the video. If not, just do a two-fingers on 2-rollers reboot.

 

[Lectric_Agent]

It should be fine. I saw you were able to fix it in the end of the video. If not, just do a two-fingers on 2-rollers reboot.

The “fix” was unplugging the inverter. I’ll try a reset but either way it’s definitely a crazy glitch

 

[KyleDay]

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]

@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.

 

[Lectric_Agent]

@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.

View attachment 652124

That’s great, I’m going to show mobile service when they come out for another issue

 

[Lectric_Agent]

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.

It’s plugged in to the 12v outlet. It’s an Energizer brand 150w pure sine wave inverter

 

[2101Guy]

do you have MCU1 or MCU2?

 

[rooter]

Even though it's an Energizer brand that doesn't necessarily mean it's not a cheap inverter.

All inverters make electronic noise from switching, some EMI in the air and some over the power wire. There are supposed to be snubber filters on the power wire to prevent this.

I would suggest putting on a toroidal ferrus core with a few wraps of the power wire through it, but it's just not worth it. Get a better inverter. And don't overload the socket.

 

[steinermeister]

@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.

View attachment 652124

Which inverter did you get, if you don't mind me asking?

 

[FatherTo1]

Which inverter did you get, if you don't mind me asking?

It is a Bestek 300W pure sine-wave inverter from Amazon. Curiously, the black/red one I bought three weeks ago doesn’t list a price anymore but the blue version is identical and same $45.99:

https://smile.amazon.com/BESTEK-300...inverter&qid=1618877351&sprefix=bestek&sr=8-6