A Cordless Phone's Major Problem - Dealing w/ Batteries?

Brian James asks: "I am sick to death of cordless phone batteries going dead at the drop of a hat. And with frequent recharging they tend not to hold much of a charge. Replacement often equals the cost of a new phone altogether... so what's the point? Ultimately I wish cordless phone manufacturers would design a phone that used standard rechargeable batteries, preferably with 2 battery bays and a switch that allowed you to switch over to the fresh set when one set starts to go dead (of course, I don't see this happening any time soon). Is there any way to modify a cordless phone such that I can run the handset off of standard batteries? I don't care how 'cheap and dirty' it ends up, I just need to know I can pop in a fresh battery and call the guy back, without waiting 8 hours for it to charge up." A few cordless phone manufacturers do have a clue. Some phones allow you to charge an extra battery in the base while the other is being used by the phone, which works well (I have a Sony 900Mhz model that does this). It would be interesting to see if someone has done what the poster has asked, however if you'd like to recommend a cordless phone that keeps downtime to a minimum, I'm sure such would be appreciated.