March 25, 2009
#560: Lithium Batteries explain

[Caption above the timeline:]
Timeline of commercial uses of lithium batteries:
[The panel has a timeline that goes from past to present. The timeline has 4 notches on it. Reading from left to right, with the scale below the line and the description above each notch are the following:]
Past
[The first notch, closest to the past side, has a picture of an old man with a walking stick.]
Pacemakers
[The second notch has an image of a man in a car, who is talking on his cell phone.]
Phones for Rich Business People
[The third notch, has a teen talking on his cellphone.]
Phones for Teenagers
[The forth notch, closest to the present on the timeline, has an image of a radio controlled toy plane box with a price tag written on it.]
Really cheap R/C planes and helicopters
Box: $10
Present
[Caption below the panel:]
Life would be so much better if I were
one of those people who aged backward.