How does extreme cold affect a battery?
Battery capacity is greatly reduced at low temperature because the chemical reactions slow down significantly and electrolyte resistance increases. At 0 degrees, a battery delivers 45% of the power it can deliver at 80 degrees. As long as it remains charged, exposure to extremely cold temperatures does not have any long-term effects. If the battery is discharged, the electrolyte can freeze, damaging the plates or even cracking the case.
