Elenco Snaptricity&reg - Manual (Page 32)

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Educational Corner:
Batteries in Series Project #22
Part A: Since the battery holder (B3) has three 1.5V type AA batteries in
series, you should measure about 4.5V (1.5V + 1.5V + 1.5V = 4.5V).
Part B: Since you are measuring two 1.5V type AA batteries in series, you
should measure about 3V (1.5V + 1.5V = 3V).
Part C: Since you are measuring one 1.5V type AA battery, you should
measure about 1.5V.
5V
Part C
Part B
5V
Part A
A. Read the voltage on the meter. If your batteries are new
then it should be about 4.5V.
B. Remove the left battery in the holder (B3) and move the
end of the red jumper wire to touch the left spring in the
holder. Read the voltage on the meter; measuring 2
batteries.
C. Now also remove the center battery and move the end
of the red jumper wire to touch the center spring in the
holder. Read the voltage on the meter; measuring 1
battery.
NOTE: The accuracy of your meter may vary.
Operation
When batteries are connected in series, they add together,
making the total voltage higher.
Description
Build the circuit as shown and set the meter (M5) to the 5V
setting.
Assembly
Snappy says: you can also connect the black
jumper wire to the 3-snap wire, then touch the red
and black jumper wires across the terminals of
any low voltage battery to measure it, or just use
the meter with the jumper wires connected to it.