AMB 260 no subscription required Battery replaced by racingtranspolnder.com a couple months ago. Also using his charging cradle. Flashes 4-5 times after full charge. lasts 3-4 days. Asking $450 shipped in US.
I know right... Probably because I butchered the name of the place that put in a new battery. here is the correct name. BTW this is the GUY for these.... http://www.racingtransponderfix.com/