I see you already own a MR70! Are you perhaps willing to open the bezel of your light and perhaps test the voltage across the emitter and maybe post a picture of the star? :question:
I got 70 seconds on Turbo but it wasn’t hot so I knocked it back up.
Sometimes turbo stepping down early can be a good safety thing. In red hot conditions sometimes a timed turbo can outlast a turbo set to 50c stepdown etc.
Being a boost driver, it pulls a lot of current from the battery. I’m told the stock battery has a protection circuit added on and those typically cause extra voltage sag.
For the longest usage of turbo you need a good high drain unprotected battery. A Liitokala 5000 or Shockli 5500 for instance.
I totally agree. I have a Wuben T102 Pro and it came with a protected cell. I inserted my unprotected Shockli 5500 mah cell and it was an instant performance increase. Not sure if the Rofis cell is protected because I’m still waiting for mine. The South African postal service is on strike AGAIN so further delays. Fuuuuuu*#!
The bundled cell of MR70 is actually an unrpotected PLB INR26650-55A (yes, a simple re-wrap), which is, the same cell core used in Shockli 5500mAh. I’m a bit surprised that no one ever pointed this out…
Funnily enough, that’s what brought me back to the thread, just noticed mine is stepping down after only a couple of seconds and I don’t remember it doing that before…
If only that Official Litikala Store on Aliexpress would have shipped my 4 26650's faster, 7 weeks so far, I'm in the UK.
When they come ill do some amp testing on my MR70, only other highish capacity cell I have is the one out of my Thrunite Catapult V6 which is also protected.
I was just helping somebody with the same problem on either MR70 or MR50. The thing about these boost drivers is that there very sensitive to resistance. Make sure to clean the battery ends as well as the contact area on the springs. The person that had the problem was able to fix it by cleaning their driver spring as it had some debris or oil or something on it.
I little bit of extra resistance will cause the driver to pull a lot more amps which will cause the light to step down to a lower level.
The protection circuitry in these batteries makes the light more likely two step down to a lower level prematurely compared to an unprotected high drain battery.
The MR70 cell won’t even fit in the Thrunite Catapult V6, but when I tested the Thrunite cell in the MR70, it didn’t even seem to go into Turbo mode, couldn’t discern any difference from high!
Amazing… I was just about to complain about my MR70. I cleaned all possible contact points and it’s working fine again. I’m even considering a spring bypass in the tail cap. Thanks!