This debate could go on for ever, but at the end of the day, it's very much a personal choice, and in MOST circumstances, I like rechargables. But not always. What one should remember, is that standard throw away batteries produce around 1.5 Volts when new. Most re-chargables only produce 1.2 Volts when fully charged. This is why the BookCourier has two settings, otherwise to get any indication of battery condition, you may as well wet your finger and stick it in the air. George. =0AThis Message has been scanned for viruses by McAfee Groupshield.