[Elecraft] Field Day - Laptop Power Consumption

[John, KI6WX]

Bill;
Most laptops will draw less 2A from 12V;  many are down around 1A.  You
should have plenty of power to spare from a 84AH battery even with the
inverter inefficiency.

However, many laptops generate significant amounts of HF interference when
running from AC power.  You may want to check out the interference level
with your laptop running off of the AC inverter.
-John
 KI6WX

----- Original Message ----- 
From: "Bill Tippett" <btippett at alum.mit.edu>


> Do any of you folks have experience running
> a laptop from battery power via an inverter?  I will be
> operating Field Day from a remote location and cannot
> use a generator.  I'll be using my K2 QRP with a fully-
> charged 75AH deep-cycle marine battery topped off by
> a 3W solar cell.  I'm planning to dedicate my RV's 84AH
> battery to the laptop via an inverter.  I'll put the laptop into
> maximum power-conservation mode but I cannot seem
> to find any specs on what its power consumption may be.
> The label on the laptop simply says "100-240V and 0.68-
> 0.37A" which I assume is at maximum power-consumption.
> This implies about 70 Watts and I'm wondering if I can make
> it through 24 hours even in max power-conservation mode.
> Has anyone been down this road before?
>