Power tool battery preserver

Hi, I am a student who is taking a capstone course for the PLTW line of classes. My partner and I are doing some research on a solution to solve storing power tool batteries in the cold to make them last longer. It would be very helpful to us if could answer the simple 5 question survey linked above. It is an anonymous survey, made on a google program. Also, if you have a suggestion that could help, give a reply and we will take it into consideration.

Your input is highly valued, Thank you! :slight_smile: