Helderberg Charger Not Working

Guys!

The charger that keeps the batteries on the Helderberg high site going stopped working two days ago.

My commercial equipment has started complaining about low voltage. The WUG kit is still sitting around 11.7V

I am arranging for techs to go up there and swop the charger out. If the batteries start fading fast, I will shut the WUG kit down to prevent damage.