A .8 amp/hour load at 120 volts will reqiure more than 8 amp/hours at 12 volts. Since you do not run a battery below a 20% state of charge you theoretically need at least a 100 A/H battery to support this load for 10 hours.

Dennis

----- Original Message -----
From: Jim Felder <felder@KNOLOGY.NET>
Date: Tuesday, June 20, 2006 10:42 am
Subject: Correction on fan amperage

> I just asked a question about battery capacity for driving a box fan
> overnight. The fan motor draws .8 amp, not the .5 I originally stated.
>
> Thanks,
>
> Jim
>