Is my Convoy S2+ Faulty?

Lexel, my technical expertise is wood science (it’s true! Lol), so, I immensely appreciate your response, but have no idea what it means. :slight_smile:

go to your garage
take a soldering iron, with a small tip
stick it to the tiny part with 28C or 223 marking on both sides and see if that fixes the problem
holding the resistor with tweezers is helpful if you hit the good side it becomes loose if other is not soldered right

Somewhat suspicious of the EVVA cell. This guy’s D4s with a EVVA 26650 is doing the exact same thing, and purchased from the same place. Probably just a coincidence though

You won’t hit 3A charging a cell phone like you would on the flashlight

Toddcshoe, that’s incredibly generous! I’d love to try that! I’m such a newbie that I have to ask what diameter this would be? Would it fit in the S2+?

Interesting. I’ll try that tomorrow if possible. I’ll PM you wish quesrions I’d o ya e any troubles :-/. Thanks so much

EDIT: yikes, I only had one beer when I wrote that - I swear…

Interesting. I’ll try that tomorrow if possible. I’ll PM you wish questions if I have any troubles :-/. Thanks so much!

Hmmmm. Well, I ordered the cell based on mtn’s reputation, which I assume is good. You’re right though. I don’t have any other way to test the discharge ability of the cell. All I know is that it seems to charge normally and charged my cell phone fine from the Nitecore F2… that’s about a 1A draw. Maybe the flashlight driver is trying to start at 2800mA (100%) and the cell is too worn for that???

Nah, it’s probably not the battery.

Probably something else in the driver.

[quote=Jack Kellar]

Did you order the Nichia with a 7135 x8?

Sure did. Mostly my lumen usage is modest (below 10%), but if I need the extra blast (well, as much ‘blast’ as you can get from a Nichia anyway), it’s a quick mode selection away.

Out of curiousity, where do you get your batteries? I have two more of the exact same batteries on the way from Mtn Electronics. I’ll charge those up and see if I get the same result. Unfortunately, these are my first and only 18650s, so I don’t have anything else to try.

I’m sure there are some local vape shops in Calgary. You could go over and try a fully charged unprotected 18650, like a high drain Samsung, LG or Sony, and rule out a battery problem.

Good call. Thanks for the suggestion.

Chinese New Year may be over, they are starting to ship my convoys.

Yup! I received a shipping notification for my order this morning! I paid an extra dollar or two for 16-26 day shipping lol. That’s in contrast to regular which is up to 2 months? I don’t know.

RobertB, as it turned out, there is a vape shop just a few blocks from my work… who knew… strange culture, vaping… Anyway, I picked up two Samsung INR18650-30Q cells, and tried them on my Convoy. Nope! Same issue. So, it’s fair to say at this point that it’s not the cell.

I found it slightly interesting that the cells came pretty much fully charged at 4.10V and 4.11V.

Maybe they were returns? I once bought some Panny 18650B’s from a highly recommended Ebay vendor and when I got them they were at 4.2v. I asked them why that was the case and he said they were returns and he also decided to test a charger on them :rage:

They probably charged them to test and ready to sell. The 30Q’s are one of the best all around batteries you can buy.

I’ll assume the latter as there is no sign of wear/marks on the terminals.

I thought my S2 was heading for scrap until I read this. I tightened up the tail cap retainer ring with needle nose pliers and it’s as good as new!

Good to hear and welcome to BLF! :partying_face: