Duty Electronic

We need a science project that demonstrates the scientific method. Does anyone have a cool idea?

Do a comparison of which AA battery lasts longest. Hypothesise which battery will last the longest and why. Don't rely on advertising claims. Look up the different types of batteries and do some research about the way they're made. Are the more expensive high-tech batteries really worth the cost?

Get 10 dollar-store cheap flashlights that use 1 AA battery each. Purchase 10 different types of batteries, all AA size. There are cheap carbon batteries, alkaline, ni-cads, li-ion, super duty electronic batteries, for example.
Borrow an electronics multi-meter which measures voltage. A general purpose battery tester isn't sensitive enough. Measure each type of battery and write down the voltage
Put one of each kind of battery in the flashlights, and let them run for 1 hour. Take them out (keep them in order!) and test the voltage. Put the batteries back in the flashlights and test them again in 1 hour. Test them every hour until the last battery quits lighting the last flashlight.
Make a chart showing the batteries and how they performed over time. Then, figure out which battery REALLY cost more or cost less to use.

Discover Duty Electronic On eBay Below:

Fowler 0 12 Ultra Cal III Heavy Duty Electronic Caliper Cross Jaws 54 100 21
Fowler 0 12 Ultra Cal III Heavy Duty Electronic Caliper Cross Jaws 54 100 21
$1,314.50
Fowler 0 20 Ultra Cal III Heavy Duty Electronic Caliper 54 100 020 1
Fowler 0 20 Ultra Cal III Heavy Duty Electronic Caliper 54 100 020 1
$1,864.50
Fowler 0 12 Ultra Cal III Heavy Duty Electronic Caliper 54 100 012 1
Fowler 0 12 Ultra Cal III Heavy Duty Electronic Caliper 54 100 012 1
$1,094.50
SPECIAL 60 Inch Heavy Duty Electronic Digital Caliper in Wooden Cas
SPECIAL 60 Inch Heavy Duty Electronic Digital Caliper in Wooden Cas
$959.99
24 600mm Electronic Caliper Heavy Duty with Fine Adjustment
24 600mm Electronic Caliper Heavy Duty with Fine Adjustment
$200.00
2pc 24 Inch Heavy Duty Electronic Digital Calipers
2pc 24 Inch Heavy Duty Electronic Digital Calipers
$279.99
SINGER 237 Industrial Strength HEAVY DUTY Sewing Machine LEATHER ZIGZAG 15 Amp
SINGER 237 Industrial Strength HEAVY DUTY Sewing Machine LEATHER ZIGZAG 15 Amp
$279.00
SINGER Heavy Duty Sewing Machine Metal Frame Automatic 60 Stitch Household NEW
SINGER Heavy Duty Sewing Machine Metal Frame Automatic 60 Stitch Household NEW
$234.00
Heavy Duty Digital Caliper Electronic LCD Micrometer Measuring 0 8 200mm 4
Heavy Duty Digital Caliper Electronic LCD Micrometer Measuring 0 8 200mm 4
$40.07
Heavy Duty Digital Caliper Electronic LCD Micrometer Measuring 0 6 150mm 1
Heavy Duty Digital Caliper Electronic LCD Micrometer Measuring 0 6 150mm 1
$6.19
Heavy Duty Digital Caliper Electronic LCD Micrometer Measuring 0 6 150mm 6
Heavy Duty Digital Caliper Electronic LCD Micrometer Measuring 0 6 150mm 6
$24.07
Heavy Duty Digital Caliper Electronic LCD Micrometer Measuring 0 6 150mm 2
Heavy Duty Digital Caliper Electronic LCD Micrometer Measuring 0 6 150mm 2
$16.67
Heavy Duty Digital Caliper Electronic LCD Micrometer Measuring 0 6 150mm 3
Heavy Duty Digital Caliper Electronic LCD Micrometer Measuring 0 6 150mm 3
$21.12
SPECIAL 80 Inch Heavy Duty Electronic Digital Caliper in Wooden Case
SPECIAL 80 Inch Heavy Duty Electronic Digital Caliper in Wooden Case
$1,279.99
12 Heavy Duty Long Jaw Electronic Caliper NEW
12 Heavy Duty Long Jaw Electronic Caliper NEW
$80.00
NEW Digital Caliper Electronic LCD Micrometer Measuring 0 6 150mm Heavy Duty
NEW Digital Caliper Electronic LCD Micrometer Measuring 0 6 150mm Heavy Duty
$14.84
Singer 4452 Heavy Duty Sewing Machine
Singer 4452 Heavy Duty Sewing Machine
$207.64
New Heavy Duty 03 35mm Mini Micro Electronic Drill Bit Chuck Clip Tools+Wrench
New Heavy Duty 03 35mm Mini Micro Electronic Drill Bit Chuck Clip Tools+Wrench
$3.16
40 1000mm ELECTRONIC DIGITAL CALIPER heavy duty long jaw X LARGE SCREEN
40 1000mm ELECTRONIC DIGITAL CALIPER heavy duty long jaw X LARGE SCREEN
$288.00
24 600mm ELECTRONIC DIGITAL CALIPER heavy duty long jaw X LARGE SCREEN
24 600mm ELECTRONIC DIGITAL CALIPER heavy duty long jaw X LARGE SCREEN
$159.00
08 24 Heavy Duty Digital Electronic Caliper Centerline Offset Jaw 6830 OFF
08 24 Heavy Duty Digital Electronic Caliper Centerline Offset Jaw 6830 OFF
$568.95
SHARS 24 Heavy Duty Long Jaw Electronic Digital Caliper
SHARS 24 Heavy Duty Long Jaw Electronic Digital Caliper
$129.00
Fowler 54 100 012 0 Ultra Cal III Heavy Duty Electronic Caliper 0 12 300mm
Fowler 54 100 012 0 Ultra Cal III Heavy Duty Electronic Caliper 0 12 300mm
$663.58
Milwaukee Heavy Duty Power Electronic Magnetic Drill Press
Milwaukee Heavy Duty Power Electronic Magnetic Drill Press
$1,500.00
SPECIAL 40 Inch Heavy Duty Electronic Digital Caliper in Wooden Case
SPECIAL 40 Inch Heavy Duty Electronic Digital Caliper in Wooden Case
$299.99
Fowler 0 40 Ultra Cal III Heavy Duty Electronic Caliper 54 100 040
Fowler 0 40 Ultra Cal III Heavy Duty Electronic Caliper 54 100 040
$2,915.00
Fowler 0 80 Ultra Cal III Heavy Duty Electronic Caliper 54 100 080 0
Fowler 0 80 Ultra Cal III Heavy Duty Electronic Caliper 54 100 080 0
$8,745.00
2Pcs Heavy Duty Keyless Drill Chuck 03 32mm for Mini Electronic Drill
2Pcs Heavy Duty Keyless Drill Chuck 03 32mm for Mini Electronic Drill
$8.36
24x 00005 Heavy Duty Electronic Digital Caliper w Fine Adjusment AB11 1660
24x 00005 Heavy Duty Electronic Digital Caliper w Fine Adjusment AB11 1660
$170.42

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