10.5 volts is where things tend to crap out. But the timer chip voltage
is only a part of the problem. The relays also drop out because they are
really 24V AC relays that only just work at 12V DC. Not really a concern
though as the mower will have about the same run/charge ratio rather it
runs 15 minutes or 1 hour. The electronics of my mower is not well
designed, but the chassi, drive motor, wheels and cutting motor have lasted
and worked well at a cheap cost. I have run the arrangment for about a
total of 20 hours.
I hope to get a picture scanned and into the robot mower gallery as soon as
I can (I lost my camera and the sofware quit working on my scanner), but
that might be a few weeks.
Cef Pearson (Terry)
cefpearson nospam at accs.net
Clinton County, Indiana
http://www.accs.net/users/cefpearson/welcome.htm