Jeff wrote:
of times. They have survived the winter well with the solar panels
receiving a modest amount of light through the shrink wrap.

I think those solar panel are they key to your success Jeff. At
least you have a constant trickle charge so the batteries never
get depleted and in fact, left alone will recharge. Solar is the best.
That is one reason I'd like a big cat. More space for solar panels.

One big cat I looked at had 10 solar panels. I figure 4 more would
fit--that would have been fabulous. Can you imagine 14?