Sorry no, I never did. However, I have used the newer powerbrick supplied with my xv25 on my older docks with no issues contrary to "official" advice.
I've seen powerbricks being sold on ebay
. I would assume these are of the correct specification to serve newer devices as most current neato stock would be of the rev64 variety. Otherwise they would be incompatible and garner a lot of returns.
current bots: Evo Mint 2, Vorwerk VR-100, Neato XV-25, Karcher RC3000, Hauzen VC-RE70V, Robomow RL350 (lawnmower)
previous bots: Samsung SR8845, Neato XV-15