We've been using rechargeables for a while. Longeivity and output is an issue. Did some research and at the time the Dick Smith branded ones were considered the better buy so we've got a load of thoses. I'll keep an eye out for Eneloop. We've got at least one appliance where rechargeables just don't hack it. Strangely enough it's the Evap Aircon remote. According to the maintenance engineer we had around, the batteries in the remote have to be super powerful as it sends a signal to the main unit every couple of minutes. My first reaction was...what a load of b.....cks... but he was right. No matter how freshly recharged they are, the system only consistently works with new disposables. Maybe the rechargeables are getting tired. Personally I love rechargeables, gives me a real good greenie buzz. They do run out a lot quicker and I have to endure a lot of stick from my family but stuff'm....they're staying.