21st November 2019

howstuffworks
16

Is hot or cold worse for a battery?

Most people are familiar with cold-induced battery issues. More than one worker has had to call in on a winter day because the car won't start. But in reality, heat is even worse for a truck's battery. Extreme heat causes water to evaporate from the battery's electrolyte.

What kind of batteries work best in the cold?

In general, alkaline batteries perform very poorly in cold weather. Panasonic's CR123A lithium batteries (PDF) have an operating temperature range of -40° to + 70°C (-40° to 158°F), while Energizer's Ultimate Lithium L91 AA batteries (PDF) have a similar operating temperature range of -40° to 60°C (-40° to 140°F).
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