JollyRoger
Enlightened
I did some testing with the ZLT+ Wayne Yamaguchi (dat2zip) made for me.
You might be interested in the results? (Just in case, here they are)
These tests are with 2AA nimh.
During the first, they were pretty fresh (but not "fresh off the charger")
I had the ZLT+ pushing out a lot of current, too...
Starting voltage was 2.68V with 2nimh AA's
Runtime / Vin (under load) / Vout / Iout
0 / 2.38 / 3.13 / 390
10 / 2.32 / 3.12 / 365
20 / 2.32 / 3.13 / 370
30 / 2.32 / 3.14 / 380
40 / 2.31 / 3.13 / 375
50 / 2.27 / 3.12 / 370
60 / 2.23 / 3.12 / 360
70 / 2.10 / 3.10 / 320
80 / 1.50 / 2.95 / 180
As you can see, nimh offer a "cheap" form of regulation, huh?
I stopped the test after 80 min. b/c the dropoff there was pretty significant and I didn't want to damage the batteries.
I did another test with a lower current setting to get better battery life and less loss through heat:
Starting at around 330 - 340mA, and two fresh AA nimh, I got 2 hours of pretty flat output (immediately dropped to around 320mA but then stayed at ~310mA for about 1 1/2 hours and then dropped to around 300mA...then slowly to 290, 280, etc. and finally to 250mA after 2 hours....could have kept going for another 1/2 to 1 hour?
The first test was done with GE/Sanyo 1600mah AA nimh. The second test was done with green 1600 mah "no-name" brand. I could probably get three hours in the second test if I use the new 1800mah AA's?
You might be interested in the results? (Just in case, here they are)
These tests are with 2AA nimh.
During the first, they were pretty fresh (but not "fresh off the charger")
I had the ZLT+ pushing out a lot of current, too...
Starting voltage was 2.68V with 2nimh AA's
Runtime / Vin (under load) / Vout / Iout
0 / 2.38 / 3.13 / 390
10 / 2.32 / 3.12 / 365
20 / 2.32 / 3.13 / 370
30 / 2.32 / 3.14 / 380
40 / 2.31 / 3.13 / 375
50 / 2.27 / 3.12 / 370
60 / 2.23 / 3.12 / 360
70 / 2.10 / 3.10 / 320
80 / 1.50 / 2.95 / 180
As you can see, nimh offer a "cheap" form of regulation, huh?
I stopped the test after 80 min. b/c the dropoff there was pretty significant and I didn't want to damage the batteries.
I did another test with a lower current setting to get better battery life and less loss through heat:
Starting at around 330 - 340mA, and two fresh AA nimh, I got 2 hours of pretty flat output (immediately dropped to around 320mA but then stayed at ~310mA for about 1 1/2 hours and then dropped to around 300mA...then slowly to 290, 280, etc. and finally to 250mA after 2 hours....could have kept going for another 1/2 to 1 hour?
The first test was done with GE/Sanyo 1600mah AA nimh. The second test was done with green 1600 mah "no-name" brand. I could probably get three hours in the second test if I use the new 1800mah AA's?