Weekend Fun

lemon battery

Last night we had fun experimenting with lemon batteries.  We used 3 juicy lemons, a galvanized nail and a penny to power a blinking LED.  We measured 2.1V at the output!  We let it run over night and the LED was still faintly blinking in the morning, over 13 hours later.  It was great to see the kids’ enthusiasm and excitement when they got it working!