This summer I bought a new to me 5th wheel. it has a Xantrex prosine 2.0 charger/invert installed. I have always been particular on battery maintenance.When I parked the trailer for the winter the battery's were fully charged and I left the charger OFF, I turned charger on when the battery voltage dropped to 12.4 volts. The charger said battery's too cold. Temperature has been in the 20s here. I have never had a temp sensor on battery's before and never had any trouble with battery's freezing. Has the charger just out smarted me.Any thoughts?

Up here in Canada batteries don't typically freeze until much colder. Usually they work pretty good until down around -5 or -10F. After that they lose quite a bit of their cranking power. Have you tried removing and bringing it somewhere warm for a few hours? Whatever you do, DON'T try to charge a frozen battery. You can tell if its frozen because the sides usually bulge out as the acid inside freezes. Once a battery has been frozen, they are usually just paper weights.

Update to original post.Battery's are not frozen.

If the battery cables weren't disconnected, or if there isn't a "real" disconnect switch installed, then they could have gone dead from all of the phantom loads and frozen. My MH will do that, I always pull the main cables even in non-freezing storage temps.Bill

IF his voltage is 12.4the are not dead or frozenhe could unplug the temp probe from the Xantrexor connect a battery charger

Batterys too cold to charge??? | Good Sam Community

trailerbikecamp
Explorer
Jan 05, 2016
Up here in Canada batteries don't typically freeze until much colder. Usually they work pretty good until down around -5 or -10F. After that they lose quite a bit of their cranking power.

Have you tried removing and bringing it somewhere warm for a few hours? Whatever you do, DON'T try to charge a frozen battery. You can tell if its frozen because the sides usually bulge out as the acid inside freezes. Once a battery has been frozen, they are usually just paper weights.
mholman
Explorer
Jan 05, 2016
Update to original post.
Battery's are not frozen.
Trackrig
Explorer II
Jan 05, 2016
If the battery cables weren't disconnected, or if there isn't a "real" disconnect switch installed, then they could have gone dead from all of the phantom loads and frozen. My MH will do that, I always pull the main cables even in non-freezing storage temps.

Bill
MrWizard
Moderator
Jan 05, 2016
IF his voltage is 12.4
the are not dead or frozen

he could unplug the temp probe from the Xantrex
or connect a battery charger
pianotuna
Nomad III
Jan 05, 2016
I would warm up the sensor.
time2roll
Nomad
Jan 05, 2016
MrWizard wrote:
IF his voltage is 12.4
the are not dead or frozen

he could unplug the temp probe from the Xantrex
or connect a battery charger
+1
MEXICOWANDERER
Explorer
Jan 05, 2016
And a few of you keep wondering why I continue to diss stuff that does not work.
time2roll
Nomad
Jan 05, 2016
As a safety item the sensor did work as designed.
ksg5000
Explorer
Jan 05, 2016
Another example of I am glad I never threw out my old/cheap/reliable battery charger - comes in handy when my expensive charger says that it can't charge for whatever reason.
coolmom42
Explorer II
Jan 06, 2016
So if the Prosine won't charge at that temp, for safety reasons..... is it a good idea to trick it into charging by warming the sensor? Or to use another charger?