I think an auto shut off feature is sorta standard on battery operated scales in general, and you are prob stuck dealing with it, at least at this price point. Maybe higher end, more expensive micro scales allow adjustment and/or disabling of the auto off as my full size scale does, but not sure. My micro scale also auto offs.
Of more concern to me on this scale is the "1 gram minimum" listed under Features on the American Weigh's website:http://www.americanweigh.com/product_info.php?products_id=1233
Don't like the sound of that.
Here is an alternative at similar price that you might consider and research. I have purchased 2 scales from this company. One was only $5 on blow out sale, arrived DOA, and they shipped me out a replacement with no return of the old one or other bs so I applaud their customer service and prices.http://www.saveonscales.com/product_ps_xx_series.html