OK to plug laptop into inverter? - Page 2 - Fiberglass RV
Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-28-2014, 07:41 PM   #21
Junior Member
 
LanceRinFla's Avatar
 
Trailer: Scamp 13 ft
Posts: 16
My Toshiba Satellite uses a 19V wall wart, but I found online a 12V to 19V car adapter. Works fine. The less you need to convert from DC to AC then back to DC, the better. Reduces the inherent losses all the way around.
LanceRinFla is offline   Reply With Quote
Old 11-29-2014, 04:18 PM   #22
Senior Member
 
Name: Francois
Trailer: Bigfoot
British Columbia
Posts: 1,163
Registry
reinventing the wheel ???

my HP laptops "brick" has a stated output of 19.3 volts...and my meter confirmed that is what it is putting out....

I took the battery out of the laptop and it is a.... 10.8 volt !!!

this tells me that I could get an appropriate size plug for the laptop, wire it directly into my 12V electrical system and it would run the laptop all day/week long like that with no problems (I don't have/use a converter in my trailer...ie no "unfiltered" 12V issues)

I'm assuming the 19.3V is to "top up" the laptops battery (10.9V) as required just like a car charger will put out 14.4V to charge the 12V battery in your car

seems kinda strange to take 12V, turn into 120 then turn it into 19.3 for a product that will work just fine on roughly 10 (????)

Am I crazy or what ?
Attached Thumbnails
batt2.jpg   mort1.jpg  

Franswa is offline   Reply With Quote
Old 11-29-2014, 04:34 PM   #23
Senior Member
 
Dudley's Avatar
 
Name: David
Trailer: 1998 Casita 17 SD
Alberta
Posts: 767
Registry
If your laptop is a Dell or HP then you will need an inverter or a 12v to 19v charger from the manufacturer. The center pin on the plug is a "sense" pin which tells the computer that is is a Dell or HP and the watt rating. Without this signal it may run but will not charger and may throttle the cpu to a lower speed.
Attached Thumbnails
CNT-C21C24.jpg  
Dudley is offline   Reply With Quote
Old 11-29-2014, 05:17 PM   #24
Senior Member
 
Name: Francois
Trailer: Bigfoot
British Columbia
Posts: 1,163
Registry
really...

don't that beat all....

so that plug has one negative and TWO positives !!!

I get 19.3 from the "inner ring" positive and 18.3 at the pin (charger/brick output).....

more complicated than I thought.... or could see

for now I'll just keep running/charging it through a small 150W inverter I got.....thanks
Franswa is offline   Reply With Quote
Old 11-29-2014, 05:34 PM   #25
Senior Member
 
Bob Miller's Avatar
 
Trailer: Class A Motorhome
Posts: 7,912
As Floyd mentioned, RF interference with MSW inverters can be a problem. While it usually isn't a problem for straight charging, if you are running at the same time sometime weird things can happen.
On my 400 MSW inverter my Toshiba and Dell laptops run fine, but when I connect the Acer in the same manner it gets a little crazy in cursor control until it's unplugged from the inverter.



Bob Miller is offline   Reply With Quote
Old 11-29-2014, 05:36 PM   #26
Senior Member
 
Glenn Baglo's Avatar
 
Trailer: Escape 17 ft
Posts: 8,314
I fried an expensive short-wave radio when I got the polarity wrong on one of those 'universal' chargers.
Make sure you really understand the symbols etc.
__________________
What happens to the hole when the cheese is gone?
- Bertolt Brecht
Glenn Baglo is offline   Reply With Quote
Old 12-17-2014, 08:07 PM   #27
Senior Member
 
Name: Roger
Trailer: U Hall VT
Michigan
Posts: 434
Registry
We have used ours for the laptop for five years, no trouble
Roger Kimble is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
How to Charge Laptop Battery without Inverter Huck Electrical | Charging, Systems, Solar and Generators 7 04-25-2014 11:38 AM
Can you plug into 120 while the 12v batteries are out? Cam A Care and Feeding of Molded Fiberglass Trailers 8 06-30-2010 09:25 PM
Recommended Laptop, Accesories and Programs? Cam A General Chat 76 06-15-2008 05:14 PM
Power Inverter for Charging Laptop in the car? V'sGlassSleeper General Chat 24 09-03-2007 10:28 AM
Can you plug into 120 while the 12v batteries are out? Cam A General Chat 0 01-01-1970 12:00 AM

» Upcoming Events
No events scheduled in
the next 465 days.
» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 10:16 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.