i'm lookin at investing in a UA-5, and i know coresound sells ready to go portable sets with 6 or 8hr batts... but i was lookin around to see if i could get a better deal, by building my own battery. the UA-5 runs on 9vdc, and i found some NI-MH batteries that are 9.6vdc. i didn't think that .6 of a volt would be a problem, and i asked some friends here, and they didn't think so either, but you know, neither them nor i are the cream of the crop, and i thought what better of a place to ask than here... so if anyone thinks this would work, or not, please let me know.. thanks.