BFL13 wrote:
OP, I suggest you put the charger in the house at more like 72F and a battery and wait till everything warms up for a goodly time, then try it out to see what its own voltage says and also what your other meter on the batts says to confirm. It may still be in shock from all those temp changes all of a sudden. Or not. If it is busted, there might be a warranty. Mine works ok and so do many others'
It responds to temp changed pretty quickly. I tested it with a 250 watt light. The temp sensor must be near the fan. If I heat it up with a 250 watt light I can get the voltage to drop. Remove the light and it goes back up. Heating up the battery terminals with the light does nothing. Warming the charger with the light in other locations does nothing as well.
