I have the the Uniden BC346XTC which is a discontinoued model. I wanted to ask current owners or anyone who knows how this scanner works, how do they keep their radio on all day if the battery dies so quickly. I have to constantly keep mine plugged in. I put in AA alkaline but they don't last even 5 hours. I also have recharge able batteries that I can put in and charge them in the scanner(just plug the scanner in while the batteries are in the scanner) but they don't last much either. Should I buy better rechargeable batteries such as ones that have like 3.7v each. Right now I'm using 3 AA rechargeable batteries that have about 1.2v. But I am worried if I put batteries that are 3.7v, they might burn out the scanner or somthing. After all it is an expensive scanner. I want to make the scanner recharge able but yield a long battery life. Lithium ions?