Ive had my new Pro-18 iscan just a week now, it works really well, except for one thing i took note to. The low battery alerts..when my batteries are about to run out of power, it just shuts off. I dont get any low battery tone or any blinking of the battery indicator. I checked and rechecked my settings, all alerts are on, as factory set... Wondered if anyone else has experienced this ?...I'm using the 2000 mah sanyo eneloop ni-mh rechargeable batteries.