From
http://www.zbattery.com/zbattery/batteryinfo.html
All test results shown below were obtained by running a modified continuos load test. The resistive load (see Ohms value) was applied to the battery until the cutoff voltage was reached (e.g. 0.75 volts). The battery was then allowed to rest for 15 minutes before the load was reapplied. This process was repeated until the battery fell below the cutoff voltage within 5 minutes of reapplying the load, at which time the test was terminated. [/UNQUOTE]
AvgWH = the average Watt-Hours for all batteries (your electric bill is based on this).
AA Energizer Alkaline = 3.001
AA Duracell Alkaline = 2.869
AA Rayovac Maximum Alkaline = 2.720
MinWH = the minimum Watt-Hours for any of the batteries tested.
AA Energizer Alkaline = 2.947
AA Duracell Alkaline = 2.760
AA Rayovac Maximum Alkaline = 2.682
MaxWH = the maximum Watt-Hours for any of the batteries tested.
AA Energizer Alkaline = 3.037
AA Duracell Alkaline = 3.107
AA Rayovac Maximum Alkaline = 2.747
According to their test AA Rayovac Maximum Alkaline lost to AA Energizer Alkaline and AA Duracell Alkaline.
Their test used a 10 ohms resistive value (what is that? a resistor or electronic device with known resistance value) while I used real flashlight.
My previous test is based on which battery provides UK4AA flashlight more burn time, so I just load them into flashlight without measuring voltage and current. I just set the camera to time-lapse capture and let it photograph the whole run taking pictures every 5 minutes. Those time-lapse photos with 'Date and Time' printed on every shot showed me which brand of battery burned longer,
also beam throw, brightness, beam size and shape.
I'll do another test-run of those 3 brands of AA batteries. Gotta go to K-Mart.
- verge -