I have not tested if it goes immediately back into Turbo, from the user manual, Intelligent circuit memory – To save battery power and protect the flashlight from overheating, the flashlight will drop down into High mode after working about 5 minutes in Turbo mode. Therefor, the runtime of Turbo output is an accumulated time.
With a code you will still get it under $39 on Banggood No doubt its a very good deal.
This is a mystery: you measure it to only 3220 lumens, while Thorfire says 3960 and that “it is brighter” than the old one. The old S70 got these reviews: “the Thorfire has under-rated this one at 3000 lumens.” JohnnyMac measured it: “4,545 OTF lumens and 9.22A being pulled at the tail (2*4.61A). No mods performed and running KK 26650 cells.” - I have s70 and it is brighter than a headlight…. PD68 Review: Thorfire S70 - XHP70 Monster
Let’s start with this : On your example , amps at the tail are still 4.61 (same current goes though both batteries), but voltage is double (so it doesn’t draw 9.22 amps as you stated).
For N4 bin , Cree claims 3390 lumens at 4.8 amps , so i think 3220 otf lumens at 5.1amps isn’t wrong . I will have to take a deeper look…
Measured again lumens , now i get 3402 lunens* at the same amps , seems my initial measurement was a little lower (i think i measured lumens after i took the beamshots) .
*All of my measurements are taken 30 seconds after turn on . Manufacturer can claim lumens at the start-up , which i think it is close to 3600
You can always add a resistor to bump up the power on turbo. You don’t even need to unsolder the driver to do it. I’m awful with soldering small things and mine is working alright.
I don’t know how much it is putting out now but its definitely heating up quicker and is brighter. I don’t have a clamp meter to get an accurate reading on current.
It is a little harder to find the same size but I found a listing on ebay for it. Look for a 2512 r100