that cell format may be possible for the LT2 ( Deluxe) version planned, that will have the power bank option. a 20ah power bank/lantern has some real benefits for run times and charging capacity. :+1:
17 days from placing my order to my mailbox in āthe Southā USā¦ā¦
That has to be some kind of record!
Thanks Sofrin for getting it out before CNY.
Hey folks I received a round one amazon code with batteries but my wallet wasnāt free enough for me to buy a lantern till today but I canāt seem to find an Amazon listing for the lantern, did I miss my chance to get one?
You can get one at Sofirnlight.com, and they have a coupon that makes the price the same as the group buy. I havenāt checked Amazon, and got sort of tired of the code business. They all ship from China, so I donāt think Amazon would save time.
How long do the CNY celebrations run for? And why would Sofirn stop taking orders? If I cancel the Amazon orders and order from Sofirnstore.com will they come any sooner?
I also encountered the same problem, because there is no stock currently, so I have to wait for the next batch. I also hope that it is the new version of LT2?
P.S The Lunar New Year holidays are on 1/24 ~ 1/29.
What about if I unscrewed the base the small amount just until the power button light goes out, will it still keep the cells balanced at the same voltage?
[quote=DBSAR]
The LT1 runs the cells in Parallel, and keeps the cells all at the same voltage.
If the cells are any good at all they should stay in balance even if they were removed from the light and stored separately for months. The few times I have bothered to record and check cells that have been stored for 6 to 12 months they have remained within hundreths of volts of each other. That is nothing to worry about.
Unscrewing one end or the other until the button light goes out mainly removes the parasitic load the button led causes. But that is so low a draw I would not worry about it unless I was putting the light away for an indeterminate period. Mine are mainly meant to be emergency use lights although I will also use them here and there and for camping. As such I want them mostly charged and available.
This post inspired me to check my laptop pulls and recycle bin scavenged 18650 cells. 5 months ago I charged them all in my charger, and measured the voltage after they rested a bit. Iāve measured them a handful of times since then. Of the about 50 cells I originally tested, one had issues with the voltage dropping with time, I found that in the first week. I just measured 32 cells that havenāt been used since they were charged 5 months ago. There were 4 different groups of cells. The groups of cells were different part numbers from a couple of different cell manufacturers. Samsung ICR18650-28A, LGABC21865, LGDBB31865, and one I didnāt note. within each group or cells, the voltage difference between cells was 0.01V or less. For all 32 cells, the voltage ranged from 4.17 to 4.13 V. If you connected two cells in parallel with that difference you would not have any trouble.
I also measured 4 cells (ICR18650-26H) I used in my LT1 for the first month or so, then I switched over to some higher capacity cells. The 4 I measured were all from the same battery pack. The measured between 3.856 and 3.857 volts.
Data that supports MtnDonās assertion in the previous post, donāt sweat it.
[quote=DBSAR]
The LT1 runs the cells in Parallel, and keeps the cells all at the same voltage.
Yes, as long as you only un-thread it a couple turns or less. the four cells will still be on contact with the base springs, (all connected together) and the cells will stay contacted with the positive ring on the driver, they will be kept in the same balance voltage. ( i have tested this already) same applied to the BLF Q8, or even the original Sky Ray King for that matter. The only part that ālocks outā when loosened a bit is the battery body upper-most bare edge disconnects from the negative outside ring of the driver near the threads.