2005 EZGO reduced range suddenly

[JohnnieB]

Something else to take into consideration is battery temperature.
The colder the batteries are, the less storage capacity they have.

They are rated at 80°F and in general terms they lose about 10% of their rated AH for every 15°F below 80°F.

Batteries have a huge thermal mass, so they don't warm up or cool off vary fast and their temperature lags the air temperature by 8 hours or so.

Here's a graph showing AH loss vs battery temperature.