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post #11 of Old 09-28-2017
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Re: Custom Built On-board PC / Boatputer Advice

Most laptops seem to run on 18volts dc. I'm not sure about desk tops, though I'm sure they also run on dc power after the power supply.
We've been running our computers directly off the vessel's 12 volt dc system, using a 'converter' (not an inverter) that takes the 12 vdc up to the requisite 18 vdc, without any problems at all. However, if you are using your computer professionally for many hours a day, solar might not be enough to keep up with your consumption, so a small generator may be a necessary back up.
For a laptop you can find the proper (auto) converters quite easily, priced from a dozen dollars to about $75.00. I have had quality issues with the lower end models. For a desk top unit there are plenty of commercial converters (not built specifically for computers) available and most will give you several voltage options.

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