UltraFire Reset Question

[SloHand]

Hello All. I'm using a RoughStack V2 Maxi. I have six 18350 1200 mAh 3.7 batteries (all protected). I have absolutely fallen for vaping at 7.4v (two 18350's in my RoughStack with either a 4.0 or 5.0 ohms atty).

One of the 6 batteries though is giving me some grief. It charges up nicely and comes off the charger at about 4.17 volts when fully charged. I can carry it around in my kit for days and the battery stays fully charged. After about three minutes of putting into my RoughStack with another fully charged battery though (whether I vape or not) this bad cells protective circuit shuts the battery down. If I put it into the charger for even a second or two it resets. Occasionally, it will stay good in the RoughStack for about 30 minutes, but that's rare.

Is this just a bad cell? Is there something other than returning it that I should consider in troubleshooting this?

Thanks.
Lawrence

 

[Switched]

Chuck the battery.

It is advise to mark your sets when stacking A1 / A2, B1 / B2 and alternate between 1 and 2 between top and bottom. That is the short answer. The longer one ... Basic to Advanced Battery Information from Battery University

 

[SloHand]

Thanks Switched. Read the article and yes I do keep them in labeled sets. The 'mad' supplier was also informed of my issue and within an hour of posting my ticket they had already shipped me a replacement. That is just the best customer service I have yet to experience with an online supplier. I'm just really bummed out that they aren't selling to Canadian customers anymore

 

[MickeyRat]

I have that problem in some mods no matter which battery I use. I get one hit and have to reset the battery. I just ordered some AW IMRs to see if it solves the problem.

 

[BardicDruid]

That's the main reason I use a battery tester, a battery will read full voltage and have way less than full capacity. That's one of the flukes of batteries, and why battery testers are different than multi-meters.

 

[Switched]

That's the main reason I use a battery tester, a battery will read full voltage and have way less than full capacity. That's one of the flukes of batteries, and why battery testers are different than multi-meters.

Do you have a link for a BT ?