Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 31-12-2011, 07:47   #1
Registered User

Join Date: Aug 2008
Posts: 275
Inverter maxes out CPU

I have a little Black and Decker inverter.It boasts of doing 1.74 amps!I tried powering my laptop with it.I figure the laptop probably needs a bit more than 1.74 amps but I tried it.It seems to power the laptop .The battery indicator read "98% not charging" .Just like it does when plugged into the shorepower.
With no applications open the CPU reading was minimal.Then I opened Open CPN 2.5.0.After a few moments the CPU went to 100%.Open CPN appeared to work normally.Battery indicator continued to read 98% not charging.The inverter did not get hot and bothered.
So I am wondering if it is ok to run the laptop like this or if there is a risk of damaging it.
nonam is offline   Reply With Quote
Old 31-12-2011, 07:59   #2
Registered User

Join Date: Dec 2008
Location: Oriental, NC
Boat: Mainship Pilot 34
Posts: 1,429
Re: Inverter maxes out CPU

Look on the laptop's "brick" to see what its power requirements are. Mine (a Dell) says 1.5 amps AC and 3.34 amps DC at 19.5 V.

You inverter's spec of 1.74 amps (presumably AC) sounds high. Most are rated in watts and the cigarette plug in types generally are about 150 watts. 150 watts is about 15 amps DC input which is all a cigarette lighter can supply.

In any case a 150 watt inverter will power most any laptop. Don't know why your battery indicator (the one on the toolbar at the bottom?) says 98% and not charging. I had a Dell power brick that did that on house AC and replaced it and it no longer does it.

djmarchand is offline   Reply With Quote
Old 31-12-2011, 08:40   #3
Registered User

Join Date: Aug 2008
Posts: 275
Re: Inverter maxes out CPU

My "brick" is the same as yours.1.5 amps AC.DC 3.4 amps @ 19v.
My laptop does not charge if the battery is above 95% and I put that info in to show that the inverter was fully powering the laptop.
I should mention that Open CPN uses very little CPU on shorepower.I dont think its a problem with Open CPN.
nonam is offline   Reply With Quote


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Interaction Between Inverter and Washer ? twistedtree Electrical: Batteries, Generators & Solar 20 23-06-2012 09:21
Inverter install - Reverse Polarity?? Jon4399 Electrical: Batteries, Generators & Solar 44 06-02-2012 14:20
Victron Inverter Info Needed colemj Electrical: Batteries, Generators & Solar 8 26-09-2011 09:13
Inverter Wiring CampDavid Electrical: Batteries, Generators & Solar 9 21-09-2011 17:59
Wiring Small Inverter into AC Panel janders Electrical: Batteries, Generators & Solar 3 25-07-2011 16:42

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 15:42.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.