Powering Laptops in your Car
Submitted: Wednesday, Mar 01, 2006 at 13:52
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Groove
I Know this topic has been covered a number of times so I thought forumites might be interested in this special that is on at Jaycar Electronics at the moment.
3.5A @ 15, 16, 18, 19 or 20 volts selecatable regulated
or
2.9A at 22 or 24 volts
$49.95
OR
6A @ 15, 16, 18, 19 or 20 volts selecatable regulated
or
5A at 22 or 24 volts
$69.95
Plugs to suite a number of laptops.
No Affiliation with Jaycar here also cant vouch for the quality as I havnt used them but seems a reasonable price.
Cheers
Reply By: arthurking83 - Thursday, Mar 02, 2006 at 23:08
Thursday, Mar 02, 2006 at 23:08
What's th the laptop you're powering?
If it's a desknote like device (desktop CPU @ 3.2Gig) or similar, then go with the 6A@20V, as the battery is almost certainly a higher drain item to keep up with the CPU (??)
Check what your laptop needs as the charging requirement, and then get the most appropriate!
Although the extra 2.5A of juice at the lower voltages may come in handy!
People always talk of using an inverter to power a laptop from the car, and while this can be handy if you alredy have the inverter, One would always assume tha a native low power transformer would be MORE EFFICIENT at tranforming 12volts into 19 or 20 volts!!
Why would you want to waste the power of your car battery to convert 12v into 240v to power/charge a 20v laptop? (doesn't make sense) and wastes more
battery power than need be!
(but then again, I can spend 12 hours a night at the keyboard, so every last drop of those 12 volts counts!! ;-)
cheers.
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