Which+battery+last+longer

Materials

3 brand name and generic batteries 3 identical flashlights notebook clock or stopwatch masking tape as labels


 * Work Cited**

Source 1

"Which batteries last longest? - AmericaNowNews.com." __Which batteries last longest? - AmericaNowNews.com __. 03 Oct. 2013 .
 *  Because its a well known news website.

Source 2 []

