Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Does temperature affect the internal resistance of batteries? And does charging a "frozen" battery allow it to charge faster than a warm or room temperature battery?

share|cite|improve this question

Internal resistance generally increases as you lower the temperature. This is because batteries generate current using a chemical reaction and the reaction generally goes slower at lower temperatures. This article on Wikipedia claims the internal resistance of a manganese alkaline battery increases from 0.1 ohms at 40°C to about 0.9 ohms at -40°C. Car batteries, i.e. lead acid batteries, do the same as described here.

A cold battery will charge slower and will have a reduced capacity, so you want to charge at room temp if you can.

share|cite|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.