Could somebody recommend a battery for my Convoy S2+?

Thank you for your help.

The LG MJ1 seems to sound like a good choice, 3500MAH, 10A cdr, I will have a look at some graph results comparing the Sanyo to the LG.

I only own a Convoy S2+ that uses 18650’s, and it is more than adequate for my needs, and due to the inbuilt protection of the S2+, is there a benefit to getting protected cells if I will be using them in this torch alone? If there is, I will go for a protected cell, if not, I will likely go for the LG MJ1 after viewing some test results on the battery.

Thanks again, Conan.

Protection is built in unless you reprogram the flashlight differently

What chargers do you use?

The convoy has low voltage protection. Protected 18650s also provide over-voltage and over-current protection in addition to low voltage protection. Doesn’t hurt to get protected. But those who only use very good chargers, know the risks and precautions often go for unprotected cells.

How does the "low-voltage protection" work in the Convoy S2+?

Is it a true "low-voltage cutoff" that turns off the flashlight when the battery gets too low? If so, then there would be little advantage in using a protected battery. This assumes, of course, that you are also using a quality charger.

If it is only a "low-voltage warning," however, that flashes the beam to alert you of a low battery, then it is still possible for the flashlight to over-discharge its battery. This can happen due to accidental activation or operator error. By the latter, of course, I mean putting down your flashlight, and forgetting that it is on!

On the other hand, the maximum current levels your S2+ demand are low enough that there is no reason not use a protected battery.

I would probably buy the protected EVVA version of the Sanyo/Panasonic NCR18650GA 3500mAh battery. Mountain Electronics sells it for a good price. Not sure whether that one is available in the UK. Protected KeepPower 3500mAh is also good.

I doubt the EVVA 18650GA will fit the S+2. I know the EVVA MH1 doesn’t and the 26F protected only fits if you take the label off. Even then it’s tight.

Thanks for the heads up.

I’ve been using protected keepower cells for mine from Gearbest for about a year at the rate of one recharge for each 2 days. No issues whatsoever.

Both EVVA 26F & 18650GA fit in my Convoy S2+. The GA is pretty snug but no problems really. All bought from Richard at MTN.
One nice thing is that protected batteries will never rattle in the S2+.

I don’t own the s2+ but I heard people using “laptop batteries”.
You take an old laptop battery and carefully disassemble it (see youtube for instructions)
and you got some free batteries.

I was able to get between 4-10 free batteries from each laptop

I recognized a lot of them being sold on ebay, charging $4-6 each and not disclosing that they are obviously “recycled”

The Samsung 4.35v 18650D1 is incredible impressive!

4.35V cells sag pretty quick below a high drain cell if you go higher than 2A its not worth it

I had thought that was the opposite. Mountain electronics posted some tests.

My EVVA NCR18650B protected is the only battery that actually fits well in my S2+. I just got some NCR18650B protected cells from IMRbatteries, and they are too wide to fit. I also have an Anker branded Sanyo 3350mAh, and that one is too wide as well. Ugh…

very strange in my Convoy S2+ the 18650B protected fit and still ratling a little
I put additional heatshrink to my unprotected cells to eliminate bad rattling

maybe you bought a fake S2+ with other inner diameter the S2+ was about 19mm?

Is there a way to tell? I bought mine from Banggood.

Usually Banggood delivers the real ones, maybe a batch with other tube diameter

too bad its not easy to expand the tube inner diameter

I don’t have a precise measuring tool, but the inner diameter of my S2+ is closer to 18mm than it is to 19mm.

UPDATE: I removed the labels that IMR stuck on them, and now they fit (just barely) into my S2+ with a bit of a push.

Could it be possible that Convoy enlarged tube inner diameter lately as they did with C8? I measured new S2+ inner diameter 18.9mm. That is quite ok with protected batteries that has “dual wrap”, like NCR18650GA with original wrap + protection + outer wrap. Don’t know what 18650 could be thicker than that. :slight_smile:

I would recommend Panasonic NCR18650B.
Cheap, good, high capacity cells.
Protection is not really necessary i.m.o.
A decent charger is more important.