I have another SP70 that should be here either tomorrow (Fri) or Monday so I can check with those cells.
Sooooo I just noticed one cell has a dent on the negative and the nipple pressed in I’m guessing this is causing the low numbers. I think Jason had this happen awhile back.
I’ll add some solder and report back. If this is the cause I’ll edit my original comment
One of my cells also has a dented bottom. It’s a consequence of shipping big cells in series. When the box gets dropped or thrown around, the 2 cells slam into each other. I don’t think it would effect it’s performance. My HD cells pull slightly less amperage than my Black Liitokala’s.
As far as lumens, my L6 with Aspire 4300 measured 5500 lumen at turn on (19.6A) and 5250 at 20 seconds (18.4A).
With black Liitokala it measured 5300 lumen at turn on and 5100 at 20 seconds (17.6A).
This is with my Maukka calibrated TA Lumen Tube. I don’t know how some guys get these big lumen numbers.
At the end of the day the SP70 is much better than the Convoy L6 so I’m happy. Purchased 7pcs to sell. Don’t think I’ll be getting anymore L6’s now unless Simon changes the UI.
The 30Q’s only achieved 100 more lumens totaling 6000 at 30 sec
Yeah
They aren’t using steel springs, but they could be using the “lowest” conductivity BeCu at 22% IACS, which would be limiting the current quite a bit compared to the C17530 alloy that I use at 38% IACS.
As long as the bypass is in contact with the cell and the other end is on the driver pad that’s all that really matters. I thought about it possibly making the dual stack too stiff but it works with my pair of 30T’s so I can’t complain, figured stiff would be good for 26650’s (which I don’t have a matched pair of at the moment)