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Author Topic: laptop power help  (Read 6137 times)

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Offline BJ

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laptop power help
« on: March 16, 2004, 03:12:04 PM »
Okie guys,  I have a question.  I bought a new laptop, And I DO NOT know how to power it in the field.  I checked Valence(even called them) they do not have a system to power mine(19.5V 1.8A)  I have looked around, even pm'd a few people.  Does anyone have any suggestions of how to power a laptop in the field??  ANY help would be appreciated.  I have searched, and most of what I found was Valence.  If at all possible, I would LOVE to power my UA-5 off the same source(haha..stretch I know).  Thanx
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Offline fozzy

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Re:laptop power help
« Reply #1 on: March 16, 2004, 03:46:35 PM »
For my Mac i have used the 2 internals but my old lappy had a car adapter kit available from the manufacturer.  If yours has a car kit i'd snag that and hack it into a 12v SLA.  This would probably be the cheapest.  If that does not interest you there are products such as
http://www.valence.com/ specifically made for a laptop.
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Offline Kindguy

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Re:laptop power help
« Reply #2 on: March 16, 2004, 06:27:16 PM »
What kind of laptop are you using?

I just flipped my Valance around & the connector says 19.5V. the unit is 16-24v. Its the one for Compaq, HP, Dell, VPR matrix, toshiba & winbook.

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Offline BJ

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Re:laptop power help
« Reply #3 on: March 16, 2004, 07:12:47 PM »
I have a sony FRV26.  I called Valence, and they said nothing would support it.  Maybe I will call back again, This is very frustrating.  So I am assuming you are using the 130?  Thanx
« Last Edit: March 16, 2004, 07:22:12 PM by razorback »
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Offline Willie T.

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Re:laptop power help
« Reply #4 on: March 16, 2004, 08:34:29 PM »
You might build your own battery pack (i think 16 batteries in series would provide 19.2 (16*1.2v) also two 9.6V RC batteries).  Then try and find a damaged AC adapter on ebay, or somewhere, and splice on the adapter to the pack.
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Offline Kindguy

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Re:laptop power help
« Reply #5 on: March 16, 2004, 10:03:46 PM »
Yea it's the 130.

www.Batteryspace.com has some laptop battery packs. You may check into those. Good luck.
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Offline mirth

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Re:laptop power help
« Reply #6 on: March 17, 2004, 12:40:35 PM »
Batteryspace's laptop battery packs only work if your lappie works off a 12V or lower internal battery.

For the kind of power you need & to get runtimes that are worth it you might need to go lead.
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Offline BJ

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Re:laptop power help
« Reply #7 on: March 17, 2004, 05:03:03 PM »
I dont mind sla(even the weight)...what I would like is some help to figure out which i need.  I have found a 12V sla (to run in tandem for 24V).  it is 12AH.  Do you multply this x 2 also?  i.e  12V x 2 = 24V  ...  12AH x 2 = 24AH?  or will it still be 12?  How can I find the actual pull from my laptop so I can figure how long this puppy will last??  I would like to power my UA-5 and a jb3 off the 24V also...can this be done?  thanx
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rabhan

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Re:laptop power help
« Reply #8 on: March 18, 2004, 05:46:43 AM »
tandem? wtf is tamdem?

you either wire in series or in parallel.

in series, you wire negative from 1st batt to pos of 2nd batt. then you double the voltage, current doesnt change.  
(2) 12V 12ah batts in series = 24V 12ah

in parallel, you jump the two pos together and the two negs together. then you double the current, voltage doesnt change.
(2) 12V 12ah batts in parallel = 12V 24ah

skalinder, jump in here if you must......
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Offline BJ

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Re:laptop power help
« Reply #9 on: March 18, 2004, 09:55:59 AM »
+t thanx rabhan   that is exactly what I was looking for.  I guess im just sol right now.
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rabhan

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Re:laptop power help
« Reply #10 on: March 18, 2004, 10:24:59 AM »
if you laptop is rated for 19.5V, 24 might not be too much, you would have to call your laptop manufacturer. however, carrying 2 12Vs would be suicide on your back anywhoo. that sucker of a laptop must have a 20" LCD on it to need that much voltage.
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Offline sickrick43

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Re:laptop power help
« Reply #11 on: March 19, 2004, 09:34:00 AM »

I've got a Sony GRT-100 with a 16.1" screen, 2.8Ghz P4.  19.5V 6.5a output on the wallwart.

You're correct with the serial/parallel thing on the battery hookup, keeping in mind that a device will only draw the amount of current it requires, but providing the wrong VOLTAGE can fry it.

I carry 2 EC-90 12v/7ah's for the rig.  They sure FEEL heavier than the 5.5lbs they're supposed to weigh.

Rick
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Offline chris dragon

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Re:laptop power help
« Reply #12 on: April 01, 2004, 09:57:27 PM »

Throw this sucker in your trunk as back up. It has a handle to easily carry, with lots of features. We pushed CD's with a HUGE boom box with big ass bass, cranked "all day"... beside the pool last summer, and it never droped off. You might get busted trying to walk into a Amp Theatre, but small clubs should be fine. Just a thought.

$149.00 Canadian Dollars...That's like a buck 99 USD

Do a google on this :

Motomaster Eliminator 400W Power Box
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Offline Kindguy

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Re:laptop power help
« Reply #13 on: April 01, 2004, 11:25:42 PM »
Quote from: chris dragon on April 01, 2004, 09:57:27 PM

Throw this sucker in your trunk as back up. It has a handle to easily carry, with lots of features. We pushed CD's with a HUGE boom box with big ass bass, cranked "all day"... beside the pool last summer, and it never droped off. You might get busted trying to walk into a Amp Theatre, but small clubs should be fine. Just a thought.

$149.00 Canadian Dollars...That's like a buck 99 USD

Do a google on this :

Motomaster Eliminator 400W Power Box

May buy this for camping. I also want to do some video recordings this summer. I could run a VCR off it. Audio from rig/camcorder > VCR

a lot of shit to lug around. But hopefully in the end it will be worth it.
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Offline Skydogj

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Re:laptop power help
« Reply #14 on: April 27, 2004, 04:33:01 AM »
« Last Edit: April 27, 2004, 04:57:55 AM by Skydogj »
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