I was reading the discussions about whether to remove the battery when winterizing and I thought, "I wonder if the battery ever freezes?" Does anyone know if this is possible and/or how cold it has to be before it does freeze?
After posting the above, I found this from a post by Mike earlier...
The rate of battery self-discharge increases with temperature. At 80 degrees Fahrenheit, a conventional battery will self-discharge at about 4 percent per week. The electrolyte in a lead/acid battery may freeze if the battery is partially discharged. A battery at a 40 percent state of charge can freeze if the temperature drops to about minus 16 degrees Fahrenheit. However, when a battery is fully charged, the electrolyte will not freeze until the temperature plummets to approximately minus 92 degrees Fahrenheit. So keep your batteries charged!