Review on Kastar 3 Pack Replacement Battery for Uniden BT-909 BT909 & Panasonic P-P102 - Compatible with DCT736, TRU9280, WXI477, WXI377, DCT737, DCT750, DCT756, DCT7565, DCT758, DCT7585, TRU9260, WHAMX4, WXI377, KX-TC1210, KX-TC1220, KX-TC1230 by Brandy Young

They were delivered quickly, easily replaced weak batteries in Uniden phones and held as good a charge as the BT-909 that came with the phones. less than a much cheaper Uniden phone. So by replacing dead batteries in 2-3 phones you can literally double the life of your phone or more for less than the retail price of a single battery! (I doubted that either. Thought they would die in a day. But I was humbly wrong) UPDATE! I've had these batteries in my Uniden phones for a while now and can honestly say they are probably BETTER than regular ones. Batteries that came with the phone! It's rare for a cordless phone battery (especially a relatively cheap phone) to last more than a few hours of continuous talk time. HOWEVER, I personally recently got stuck on a conference call (which required a speakerphone and usually more battery) for three and a half hours and the bar dropped to just under half! HIGH QUALITY! I would say I would buy more but I think they will outlive the phone. If it weren't for the wireless phone technology itself :) VERY impressed with an inexpensive "gamble" on invisible products!