Using a laptop on board on DC power

[jkindredpdx]

Originally Posted by Joe Okros

Just get an inverter, they are relatively cheap and you can use all kinds of other electrical equipment like power tools and even microwaves as well. I'm lucky, my boat came with a Heart Freedom 25 Combi inverter/charger so I even charge my batteries with it,----Been on the boat for about 16 years now. Stop farting around with none OEM solutions that will let you down and can't be replaced in out of the way places.

Another +1 for Joe...
I have several different devices and cordless tools that charge via 110v inverter. Thanks to solar, the loss in DC/AC/DC conversion is insignificant.

[HankOnthewater]

I haven't got a laptop on the boat but an Asus (vivo mini) small PC, like the Intel NUC but smaller and cheaper. It requires 19 Volt.
My solution was one of these.
https://www.ebay.com.au/itm/1200W-20...53.m2749.l2648
Output Voltage can be completely adjusted form 8 to 60 Volt.
Is hardwired in, has worked faultlessly for nearly a year, always switched on, but just in case, bought a few of them

Monitor is a 12 Volt unit, directly from batteries, initially I thought making a 12 Volt steady regulator for that, but as I have noticed, runs fine from 11 to 15.5 Volt, I might not make such regulator now. Yes, I know these 11 and 15 V Voltages are not good for the batteries and they were exceptions.