When I place the remote on the base, red charging lights alternate flashing slowly for a few seconds then start flashing simultaneously . According to the manually, this means either the battery charge exceeds 5.5 volts or the wrong type of battery is installed.
Well, the batteries I am using are the ones that came with it so it is not the wrong type. And the batteries are clearly drained as the remote will only stay on for a few minutes, so they don't exceed 5.5 volts.
I also tried another set of NIMH batteries I had lying around with the same result.
Anyone else have this problem?