Hi,

I have recently been looking into running a inverter from a 24v Hgv battery to 240v (pure sine wave) inverter, then plug the laptop cable with chicony 19.5v 11.8amp power brick to supply my gaming laptop.

However someone has suggested instead of going dc - ac - dc and due to power output from power brick being less than output from battery just to go dc - dc.

Does this sound right, what dc - dc adapter would people recommend and yes I have a 24v auxiliary power output (cigarette lighter attachment) which is only 10amp, would this require bypassing and wire straight to battery?

Any help appreciated, TIA John

 

Welcome to AAC!

what dc - dc adapter would people recommend

What kind of battery does the laptop have that requires a 19.5VDC/11.8Amp power brick? Most of the laptop chargers I've seen are more like 4-6A.

If the current wasn't so high, you could roll your own buck converter. At 11.8A, you'd be better off buying something commercially available.

 

Welcome to AAC!

thank you.

What kind of battery does the laptop have that requires a 19.5VDC/11.8Amp power brick? Most of the laptop chargers I've seen are more like 4-6A.

The battery maybe a lower amp the second graphics card only kicks in when plugged in, I believe it’s the second card that uses the 11.8amp not the battery.