Peter, have you tried the energizer 2500 mah batteries reviews rate them currently the best high-end battery I just bought the Maha mhc204w charger, seems to be the currently top rated charger. -----Original Message----- From: bookport-bounce@xxxxxxxxxxxxx [mailto:bookport-bounce@xxxxxxxxxxxxx] On Behalf Of Peter Rand Sent: Wednesday, September 14, 2005 1:11 PM To: bookport@xxxxxxxxxxxxx Subject: [bookport] Favorite rechargeable batteries? Hi James, > I have not tried rechargeable batteries in the Book Port. What are > people's experiences with rechargeable batteries? Which batteries seem > to last the longest? I use Sanyo Ni-MH 2500 mAh rechargeable batteries in my Book Port. They have a very steady performance curve that is similar to alkaline batteries (i.e., they don't die quickly and unexpectedly like some batteries) and seem very reliable. The last set I had in the Book Port lasted about 2200 minutes if I recall correctly, which is about 36 hours. I've used lithium batteries as well, and while they last for about 100 hours, they tend to die abruptly with no warning, which has inconvenienced me a few times. So my preferred batteries for the Book Port are the Sanyo Ni-MH 2500 mAh rechargeable batteries. They're economical, environmentally friendly and reliable. I think a set of 4 costs about $15 at Amazon.com. Peter