Voltage test results.....

[RedAlert]

I finally got my load tester completed and figured I'd try it out and post the results in the Reo forum, since all the tests were done using my Grands.
The two batteries I am testing are the AW 2200mah Lion 18650 and the AW IMR 1600mah 18650. I did three tests with each battery. All tests were done using a LR 306 1.5 ohm atty(that ohmed out at 1.51)

Test 1) Full charge
The Lion came of the pila charger at 4.21 volts. Under load it held 3.68v for 8 seconds
The IMR came of the pila charger at 4.20 volts. Under load it held 3.87v for 8 seconds

Test 2) Half used charge(aka "the mid day battery droop")
The Lion was at 3.98v. Under load it dropped down to 3.49v for 8 seconds
The IMR was also at 3.98v. Under load it held 3.69 for 8 seconds

Test 3) Almost dead ( aka "am I gonna make it home?")
The Lion was at 3.71v. Under load it managed to hold 3.26v for the 8 seconds
The IMR was at 3.73v. Under load it held 3.43v for 8 seconds.

I tried to keep the voltages even between the two batteries to make it as close as I could,
The only thing i didnt really pay attention to here was the times the batteries were in use. I had been using the Lion for almost 11 hours to get these tests done. The IMR was in use for about 8 hours.

I plan on doing another test like this soon, but between the IMR and the new AW 2600 LiCo battery, as soon as I find out if it will fire in a Reo, being its a flat top.

 

[mlinky]

If those are the results with the 18650, no wonder the IMR 14500 is so much better on the Mini.

 

[redeyedancer]

There is a drastic difference in the voltage drop from one bat to the other I have done the test and I no others have and we all have the same results.The imr s perform better under load

 

[ltrainer]

Thanks for sharing the information on your tests. I used your data to compute watts (heat) at the atty.

Test 1:
LiOn 8.97
IMR 9.92

Test 2:
LiOn 8.01
IMR 9.01

Test 3:
LiOn 7.03
IMR 7.79

The wattage drop from Test 1 to Test 2 is:
LiOn .96
IMR .91

The wattage drop from Test 2 to Test 3 is:
LiOn .98
IMR 1.22

The total wattage drop from Test 1 to Test 3 is:
LiOn 1.94
IMR 2.13

If one were to use an atty in the LiOn that is 1.35 ohms lower the wattage ends up being about the same or conversely using an atty that is 1.35 oms higher in the IMR ends up giving about the same wattage as the LiOn.

The drop off is fairly even and consistent between the two batteries. The IMR just runs hotter. The LiOn lasts longer, 11 hours to 8 for the IMR.

Thanks again for the test.