You can read PART 1 here.
http://candlepowerforums.com/vb/showthread.php?t=137063&highlight=ultrafire+finally
After getting the new type ULTRAFIRE WF602A1 and testing it I decided to order 5 more and see if they were all the same. Got the 5 lights on wed and spent a couple of days testing them. Basically to see if they developed the problem of not restarting after the battery level dropped below 1.2 VOLTS. Great News...ALL 5 LIGHTS WORKED PERFECTLY AND WOULD COME ON WITH THE BATTERIES AS LOW AS 0.85 VOLTS. I used DURACELL ULTRA'S in all 5 lights. The five new lights all had the new type switch and what looks like extra solder on the Back of the LED. SEE PHOTO'S.
I started the test doing the same thing I did in PART 1. On for 15 min off for 15 min. After 1 hour of ON time it dropped to about 75% brightness and the battery read 1.15 volts. After 1.5 hours of on time it dropped to 60% brightness with the battery reading 1.10 volts. At 2 hours of ON time it dropped to 50% brightness but the battery jumped back up to 1.15 volts?????? At 2 hours 15 min of ON time it was still at 50% brightness but the battery dropped to 1.0 volts. I then let it rest for 35 min and turned it back on for 25 min. It had then dropped to 40% brightness and the battery read 0.75 volts. At first they wouldnt come back on. But after waiting about 3 min they came back on. I checked the battery and it read 0.85. I stopped the test for the night and the next day(about 20 hours later) I started again. The batteries started at 1.31 volts and after 30 min od ON time had dropped to 1.00 volts. The brightness was about 70%. Turned it off for 30 min and then back on for 30. At the end of the 30 min of ON time the light was about 50% brightness and the battery was at .95 volts. Left them off for another 15 min and then back on for about 25 min and they were all still on but light was about 25% brightness. Thats where I ended the test. I had OBOUT 3.5 HOURS OF ON TIME OVER TWO DAYS. With intermitten use the light will consistantly stay above 75% brightness. Im no expert in doing these kind of test but Im sold on these lights. Just ordered 12 more which will be given as Christmas presents. They average about 17.00 shipped. The five I just got are already gone. Kept two for myself and the rest are slated for XMAS. Fifthunit doesnt have the HAlll VERSION listed on their website yet but they said you can email them and they can get them. The HA lll version is about 24.00. Heres a link the lights.
http://contents.fifthunit.com/html/products.5th/sku.927.html
http://candlepowerforums.com/vb/showthread.php?t=137063&highlight=ultrafire+finally
After getting the new type ULTRAFIRE WF602A1 and testing it I decided to order 5 more and see if they were all the same. Got the 5 lights on wed and spent a couple of days testing them. Basically to see if they developed the problem of not restarting after the battery level dropped below 1.2 VOLTS. Great News...ALL 5 LIGHTS WORKED PERFECTLY AND WOULD COME ON WITH THE BATTERIES AS LOW AS 0.85 VOLTS. I used DURACELL ULTRA'S in all 5 lights. The five new lights all had the new type switch and what looks like extra solder on the Back of the LED. SEE PHOTO'S.
I started the test doing the same thing I did in PART 1. On for 15 min off for 15 min. After 1 hour of ON time it dropped to about 75% brightness and the battery read 1.15 volts. After 1.5 hours of on time it dropped to 60% brightness with the battery reading 1.10 volts. At 2 hours of ON time it dropped to 50% brightness but the battery jumped back up to 1.15 volts?????? At 2 hours 15 min of ON time it was still at 50% brightness but the battery dropped to 1.0 volts. I then let it rest for 35 min and turned it back on for 25 min. It had then dropped to 40% brightness and the battery read 0.75 volts. At first they wouldnt come back on. But after waiting about 3 min they came back on. I checked the battery and it read 0.85. I stopped the test for the night and the next day(about 20 hours later) I started again. The batteries started at 1.31 volts and after 30 min od ON time had dropped to 1.00 volts. The brightness was about 70%. Turned it off for 30 min and then back on for 30. At the end of the 30 min of ON time the light was about 50% brightness and the battery was at .95 volts. Left them off for another 15 min and then back on for about 25 min and they were all still on but light was about 25% brightness. Thats where I ended the test. I had OBOUT 3.5 HOURS OF ON TIME OVER TWO DAYS. With intermitten use the light will consistantly stay above 75% brightness. Im no expert in doing these kind of test but Im sold on these lights. Just ordered 12 more which will be given as Christmas presents. They average about 17.00 shipped. The five I just got are already gone. Kept two for myself and the rest are slated for XMAS. Fifthunit doesnt have the HAlll VERSION listed on their website yet but they said you can email them and they can get them. The HA lll version is about 24.00. Heres a link the lights.
http://contents.fifthunit.com/html/products.5th/sku.927.html
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.........Now that they had fixed the issue, I'm spoilt for choice! This or the upgraded LumaPower LM301? 
