A simple single blob of solder is all that is needed to take the amperage up over 9A Thorfire S50 / microReview + Budget Mod
the S70 is a bit more “complicated” to open+mod as it has no pill
unscrew the battery tube
unscrew the driver retaining ring
tilt the driver in the cavity (watch out not to rip the eswitch wires!)
find the resistors ans place a solder blob over one
remount
done
Nice! Thank you. Is a spring bypass required? Any guesstimate on lumen output after mod? How does the mods effect lower modes?
Cheers!
What exactly did you mean by “liked to de-tune it a bit from where I have it now”?
- Is 9A too hot? Or is it just too much wasted energy?
- And what would you have liked to have targeted … 6A? 7A?
Overall, was it worth hotwiring or would you have been happier with just the simple spring bypasses?
Also just did a tail cap reading with a pair of freshly charged Thorfire 5000 mah INR”s & got 4.94A.
And just did a tail cap reading with 18650 Efest 3100 mah IMR”s & got 5.01A.
Tail cap reading with a pair BASEN 26650 4500 mah IMR , got 5,4 A
stock driver?
Mine is a stock driver.
Surprised that the Basen”s give a higher tail cap reading than my Keeppowers although DMM accuracy will probably be different between myself & Gerrit.
FWIW I am using an Amprobe AM510 with stock leads.
Mine is also a stock driver.
I do my measurements with a Brymen 876s and use 13 AWG wire
Keeppower IMR (black)? Those are pretty average cell imo.
Just killed the clicky switch while trying to bypass the spring… :person_facepalming:
But have already ordered a new one, including some 0.2 ohm sense resistors to mod the driver.
How what did you do?
The switch was still mounted on the PCB while I was soldering on the spring side, suddenly I saw some black stuf flowing through the via’s.
Yes, that was the switch that was melting…. :laughing:
Funny thing is, this wasn’t the first time it happend. :person_facepalming:
To prevent that I always hold the switch by the sides while I solder in the wire. When it approaches too hot to hold it’s time to let it cool down. 
According to HKJ”s review they are a very good performing cell Test of Keeppower IMR26650 5200mAh (Black) 2015
Also usually no 2 lights will give exactly the same readings even if using the same cells & test equipment.
Have a look at the graphs on post 99 here PD68 Review: Thorfire S70 - XHP70 Monster
A difference in accuracy of the DMM of only 0.3% would give the Keeppowers the same tail cap reading as the Basen.
Good high capacity cells, yes. Not great cells if you are looking for max output or a high tailcap reading. Look at the sag when compared to higher drain cells like a fair amount of the 4200mAh 26650. That’s why I opted for 4200mAh Efest IMR26650 cells for near max output, but a fair compromise in capacity.
Pulled from HKJ’s comparator: Battery test-review 26650 comparator
I wasn”t looking for a high tail cap reading, if I had been I would have chosen another cell.
Agreed there is some voltage sag but as the S70 only pulls 5A on turbo & as I didn”t envisage running it on turbo all the time (having to have to re-set it every 3 minutes after it stepped down) I went for the KP”s.
I was more interested in run time on the lower settings (high) TBH.
However as I have the Cometa coming which again is around 5.5A on max I think, I may order a pair of Basen”s 
Also when my new light meter arrives I will be able to measure light out put with the 3 different brand pairs of 26650 cells I have 
I may even get a pair of KK”s as I think that I will be getting a second Cometa if the first is as good as it sounds.
Yes no getting away from it that those are impressive readings from those Basen”s