Hi all,
in the course of changing the panel i want
to change the real old batteries too.

the manual says:

Although the capacitor on the battery holder retains its charge for a minute or more, to ensure no interruption of power to the memory chips the batteries should be changed with the power on. Alkaline "D" cells should be used. Refer to figure 4-1 for location of batteries.


Is it possible to change the batteries even
when the power is off in the timeline of a minute?
Does alkaline plus D with 1,5V do the job and is there
anything to watch out?

cheers&thanks
harald