Save Energy Onboard with a 12-Volt Laptop Charger

For many cruisers with simple electrical needs, a laptop computer can be the biggest power hog onboard. On our Creekmore 34, Eurisko, we need a laptop not only for my writing, but for our three homeschoolers.
Author:
Publish date:
laptop-charger

For many cruisers with simple electrical needs, a laptop computer can be the biggest power hog onboard. On our Creekmore 34, Eurisko, we need a laptop not only for my writing, but for our three homeschoolers. Until recently, we kept it charged through an inverter, which give us about four hours of computer time a day before our two 50-watt solar panels could no longer keep up and the house battery-bank voltage started dropping. 

We finally realized the major culprit was the inverter. Specifically, we were wasting electricity by using it to change the boat’s 12-volt DC power to AC power for the computer’s 110-volt power cord, which then changed it back to DC power for the computer.

After weeks of research I found the web site laptoppartsnow.com, which sells 12-volt plugs for laptops. (Search by brand and model of your laptop.) Since we no longer waste energy converting DC to AC and then back to DC, I can use our laptop for 10 to 12 hours a day, and the batteries never notice it. When choosing a 12-volt charger for your computer, be sure to match the output (in volts and watts) of your 110-volt charger to that of the 12-volt charger you purchase. This ensures that the new charger will provide enough power for your laptop without damaging it.

Related

albintoilet

Gear: Albin Pump Marine Toilet

Head Start Is there room for a new marine toilet? Albin Pump Marine thinks so, having just introduced its line of Swedish-built heads—ranging from compact to full-size models—to the American market. The toilets feature vitreous porcelain bowls and either wooden or thermoplastic ...read more

07n_45R2699

Multihull Sailor: Classic Cats

If you’re looking for a decent sub-40ft cruising cat, you have few choices when it comes to new-boat offerings. It is a well-known fact that the multihull market has taken off in a way very few could have predicted. Despite Hurricane Irma’s recent destruction of a large part of ...read more

TOTW_PromoSite

SAIL's Tip of the Week

Presented by Vetus-Maxwell. Got a tip? Send it to sailmail@sailmagazine.com Thanks a bunch  This scene is very calm and seamanlike. No frantic rope throwing or shouting. As he passes the line to the gent on the dock, the crew on the boat says, quietly and clearly, “Would you ...read more

mcarthy-and-mouse

Experience: McCarthy and the Mouse

Sitting at the helm in a light breeze, my arms crusted with a fine rime of salt, my skin so dry I’d lost my fingerprints, I heard a clatter and a curse from below. There were only three of us a thousand miles from shore and only one on watch at a time. Usually, the off watch lay ...read more

2018-giftGuide

2018 Holiday Gift Guide

Brass Yacht Lamp Does someone on your gift list spend the whole winter missing the warm days on the water? Let them bring a little bit of nautical atmosphere home with this new lamp from Weems & Plath. The glass enclosure means the flame cannot be blown out even by ...read more

image001

Opinion: On Not Giving Up Sailing

E.B. White was 64 when he wrote his now-famous essay “The Sea and the Wind That Blows,” which begins as a romantic paean to sailing and then drifts, as if spun around by a pessimistic eddy of thought, into a reflection on selling his boat. Does an aging sailor quit while he’s ...read more

1812-JeanneaueNewsVideo

Jeanneau Sun Odyssey 410

Designed by Marc Lombard, the Sun Odyssey 410 shares much in common with her older siblings including of course, the walk-around deck. Other features that set the 410 apart from other models being introduced this year include the 410’s “negative bow” shape allowing for a longer ...read more