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Author Topic: toshiba laptop & batteries  (Read 465 times)
JESSEM
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Posts: 21




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« on: June 05, 2007, 07:53:30 PM »

I have a toshiba A45-S121 laptop whose specs are as follows, 15V 8A.  The laptop batt will only last 2 hrs so I would like to be able to connect it to my
79 AH battery along with my yaesu 857d for field day.
I am not sure what I should be looking for--a dc to dc converter Huh

Any help would be greatly appreciated--I am a new general working on AE :-)

73 de Jesse Maher W6JMM
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KE4DRN
Member

Posts: 3721




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« Reply #1 on: June 06, 2007, 04:39:39 PM »

hi jesse,

look for a used Toshiba airplane/auto adapter kit,
many out there from other mfg but avoid the cheap ones.

most of the time they show up on ebay long after
the laptop was recycled or stolen.

73 james
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G4AON
Member

Posts: 526




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« Reply #2 on: June 16, 2007, 01:40:18 AM »

Your laptop seems to draw a very high current, I guess most of the common laptop converters wouldn't deliver enough current.

My Toshiba laptop (Satellite L20-217) is rated at 3.42 Amps and 19 Volts. I use a dc-dc converter from the UK supplier Maplin (www.maplin.co.uk) stock code L40BB. The input power lead is too short and connects to a cigarette lighter socket, I replaced the lead with a longer one rated for 20 Amps, and wrapped the lead through a large ferrite sleeve. To avoid setting the wrong voltage, I glued the selector switch and also glued the "power tip".

I've run both the laptop and my TS-480SAT "all day" on a 110 Ah leisure battery and both work happily together with no QRM from the laptop/psu.

Dave
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