EDIT: Replacement light arrived. Results in post #7.
Ok, I know quite at least several members have this light.
I also know, from space-time's helpful test, that a 'good' one will draw about 2.2A at the tailcap in high mode, running on 2x freshly charged 18650 cells.
Well, a couple of us who bought the same model within the last few weeks got lights with low output. Mine only pulled about 1/3 the expected current on high when I first got it, but the current went up a bit as the cell voltage dropped, and with cleaned contacts & threads. So, either the design has changed, or there are some duds. This light has (had) great potential, but it seems maybe that is over, and they are not so impressive anymore?
It would be very interesting to see data on the performance of the various samples owned by this community! So, if you have this light and are similarly interested, please do a simple current test at the tailcap with 2 freshly charged cells, and post the result. Please also note when you got your light. Then, maybe we can figure out if the product was downgraded permanently. If not, it's probably worth returning the weak ones in hopes of getting a better one. If any new lights have >2A results, great! Let us know!
My results are:
*770 mA with 2 fresh charged Trustfire 18650s
*1.13A after cleaning the contacts, running on high for about 15 minutes, and then letting it cool down again. It still showed 8.17V open circuit across the pair of batteries.
*I ordered it in late may, 2010. Received on or around June 17th.
I don't want to be redundant in this thread, but if you want to know more, or see our questions and ideas on how to mod the weak ones for more output, that thread is linked below. Also, a brief description on how to do the measurement, in case you don't already know:
http://www.candlepowerforums.com/vb/showthread.php?p=3434597#post3434597
Thanks in advance to any who will measure and share data, it will be appreciated!!!
Ok, I know quite at least several members have this light.
I also know, from space-time's helpful test, that a 'good' one will draw about 2.2A at the tailcap in high mode, running on 2x freshly charged 18650 cells.
Well, a couple of us who bought the same model within the last few weeks got lights with low output. Mine only pulled about 1/3 the expected current on high when I first got it, but the current went up a bit as the cell voltage dropped, and with cleaned contacts & threads. So, either the design has changed, or there are some duds. This light has (had) great potential, but it seems maybe that is over, and they are not so impressive anymore?
It would be very interesting to see data on the performance of the various samples owned by this community! So, if you have this light and are similarly interested, please do a simple current test at the tailcap with 2 freshly charged cells, and post the result. Please also note when you got your light. Then, maybe we can figure out if the product was downgraded permanently. If not, it's probably worth returning the weak ones in hopes of getting a better one. If any new lights have >2A results, great! Let us know!
My results are:
*770 mA with 2 fresh charged Trustfire 18650s
*1.13A after cleaning the contacts, running on high for about 15 minutes, and then letting it cool down again. It still showed 8.17V open circuit across the pair of batteries.
*I ordered it in late may, 2010. Received on or around June 17th.
I don't want to be redundant in this thread, but if you want to know more, or see our questions and ideas on how to mod the weak ones for more output, that thread is linked below. Also, a brief description on how to do the measurement, in case you don't already know:
http://www.candlepowerforums.com/vb/showthread.php?p=3434597#post3434597
Thanks in advance to any who will measure and share data, it will be appreciated!!!
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