BLF A6 FET+7135 Light Troubleshooting and Mod thread

I’m using a Samsung 30q and the new 219c triple from mtnelectronics. It is a cheap meter using my own 14 gauge leads. I guess i don’t really know how accurate that reading was. But prior to adding the triple it was at 4.7 amps with crappy leads. So the math kind of makes sense as we know the 30q is a 15a drain and triple the led’s in parallel. As sad as it is to say - it’s a little much and I may have to go the route you went with a lower amp battery only I don’t have a charger that will go over 4.2v.

For cells, you might want to try a 10A cell like the SANYO GA or Pana PD/PF, or even a classic Pana A or B. I'd check the draw though - maybe drawing near 10A on a 10A cell is bad for it??

You could do other things, like use smaller gauge LED wires and make them longer. Lots of guys use 18 AWG wires in triples - normally that's great, but for triple 219C's - watch out, probably better to use 22 AWG. To me it seems like 219C's get hotter than typical XM-L2's at the same amps, not sure if there's any evidence to that though...

Dunno if I'd fiddle with spring bypass's - good and bad: don't want to melt springs so the bypass's help with that, but doing the bypass allows higher amps draw from the cell... Maybe Dale or someone else has more experience with that. I always do spring bypass's on high amp mods - would not want to take the risk without doing it.

So — it’s a tangent, but if anyone has suggestions about what would be a good host for a triple 219c — please start a thread about that.
Something with a whole lot of extra heat sinking, I guess?

I have been using one of the Mtnelectronics FET +7135 drivers in a triple with no apparent issues. The only difference is that I am using an 18350 tube, so I only draw 9A or so max…. With the 219C it gets hot, but I do not seem to have the other timing related issues.

On the other hand, I also built a 18350 219C triple with a 3A Qlite, still a good amountof light, and nowhere near as much heat…

Perhaps a X6 with a copper heat sink? Or did you mean a tube light?

just hoping someone will start a thread for it elsewhere, this one’s not the place to go off track

lol, then why not just start one silly.

Now that I know what I know. I may go ahead and order the convoy s2 host that goes along with the spacer I already have. The spacer really seems an important factor. Chopping it to fit in the a6 seems like the wrong move. (But I may get impatient and try to finalize this thing. I want some beam shots!) :wink: RMM already builds an s3 tube triple so it must be working well for him.

And thanks for your help Tom E! The only thing I have any business doing is soldering - and even that has been a learning curve! I really didn’t do a lot of research before I started modding this light. I emailed RMM one time but really didn’t read many threads on triples before starting.

EDIT:

Hi have the longer copper spacer (for the S2) and put it in a S8 (which used the same pill and reflector as the S2). It seems to handle the heat much better than the S2+ spacer I used for the BLF A6 triple I made…much better. The BLF A6 triple got hot much faster than the S8.

QUESTION! Does the shorty tube fit a protected 18350 cell? KeepPower P1835C 18350 900mAh geschützte wiederaufladbare Li-Ion Batterie Sale - Banggood Deutschland sold out-arrival notice-arrival notice

Nope!

I have tested that particular cell and it is too long for the short tube.

Are you able to recommend me a capable battery for the shorty? I wan max capacity and max discharge. I dun care if it protected or not! Thanks! :slight_smile:

KeepPower (unprotected), Efest, NiteCore and Xtar are all good choices.

These are 18350 cells right? Not 16340?

Yes, all 18350.

THANKS! :smiley:

Thanks! So you’re saying that you built an s8 triple or you used the spacer from one? I wonder what the difference is.

Or did you mean you used the S2 spacer (the long one — not the short S2+ spacer) and put it that spacer in a Convoy S8?

Hi guys, I’m sorry I was not clear. I used the longer spacer for the S2 and put it in the S8 host. The S2 and S8 used the same reflector and pill.