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Hello mate.
Thought I would give an update regarding my laptop and inverter dilemma!

So, I got a 700w inverter, wired it to my leisure batteries.
I tested it out first on a usb charging plug, to charge my phone. It Worked fine.
Then I tried a house bedside lamp. No probs.

Then I plugged an anti power surge plugboard in then my laptop power supply. The plugboard turned off and no power to laptop power supply.
That didn't work then!

You're right, probably need a generator of some sort.
Any ideas what would do the job!

I'm contacting ASUS regarding your suggestion about car cord. So Thanks for that mate.
Matt

Hi dan. yeah Typo.. 240v input.
IT is a big power supply as it's a monster high end laptop. Asus Rog gaming laptop. It's got about a 2-3 hour battery life and I use it to do high end 3d game art for my clients.
I can't do anything about the power supply/ charger.
I don't think a car cord is possible for it.

I've also asked and heard back from Halfords and a separate electrical supplier. They said a 500w inverter would do the job. But 700w + would be best.

Thanks for the help. Much appreciated.

Hi there.
I'm nearing the end of my camper conversion.

I'm trying to get information on how many watts inverter to get to charge my laptop.
the laptops power supply is a bit of a beast! On the back of the supply it says...
The inverter will not be used to power anything else but the laptop.

Input 4.4v
Output 19.5v - 16.5a
Energy consumption - 347 wh
It's listed as a 330w charger online.

I was thinking 600w?

Any help would be great.
Thanks
Matt