There are some BA-5598/U batteries on eBay being sold as useable on the PRC-25 and PRC-77 radios. This is in error since the BA-5598/U has the potential of burning out the tube in a PRC-25. The PS magazine articles are linked from my PRC-25 web page at: http://www.pacificsites.com/~brooke/PRC25.shtml#PS 73, Brooke Clarke, N6GCE http://www.prc68.com