Ultrafire battery won't fire

[durianeliquidflavorplease]

I bought an Ultrafire BRC 18650 3000mah battery (the red one) several months back, and I belatedly learned that one should not choose batteries with 'fire' in their name. It stopped working just after a month or less. I've been using Efest batteries since. I just wish I've bought Efest batts from the start.

I now have a digital multimeter (the old analog we have had conked out) and checked the crappy Ultrafire's voltage. Came in at 3.9v, which I thought wasn't bad for a stored battery experiencing some drain. I then charged it with my xtar WP2 just to see if it can still take in some charge. It did; it clocked in at 4.21v after a full charge that took just maybe 20 minutes. I then put it in my mech mod. Still wouldn't fire.

I'm just curious whether this batt can still work, or what's wrong with it. I know it still holds the correct charge but it just won't work. I use RBAs by the way, in the 1.2-1.8 ohm range. Thank you!

 

[xbassman]

Did you check it with your multimeter before putting it in you charger?
The WP2-II can reset protection that has tripped.

 

[durianeliquidflavorplease]

I did check it before charging. I was indeed thinking if it was something about the protection. What I do know is that this brand sucks LOL.
I wish I had bought Efest right away.

 

[Cjax]

Those ultrafire's are protected batts with a very low amp rating. You vape lr coils and the amp draw they create is tripping the protection circuit in the battery.

 

[durianeliquidflavorplease]

Those ultrafire's are protected batts with a very low amp rating. You vape lr coils and the amp draw they create is tripping the protection circuit in the battery.

Does that mean I can use it for high-resistance builds? If so, at what ohm level would that be possible? Thanks!

 

[Cjax]

Well, I'm not quite sure the amp limit of that battery (I think it's like 2.5 amps), but honestly, you'd be better off investing in some good quality batteries. Madvapes has EH IMR's really cheap if cost is an issue. Otherwise I'd recommend AW IMR batteries. Super-T or RTD has good prices on these.

 

[durianeliquidflavorplease]

I see. Well, I already have several Efest batteries here and they work well, it's just that I was wondering if I can still salvage this ultrafire, put it to good use. I read that some people manually remove the protection chips from the battery to allow it to work unhampered and unprotected, but I know that that would be dangerous and I'd rather not try it. Maybe I can just use the ultrafire batt to power a compatible flashlight. Thanks a lot, sir!

 

[Cjax]

Yeah, since you already have efest's you're in good shape! I just wouldn't trust those ultrafire's (or any low amp protected batt) in a mod with an rba. Efest's are a much higher quality cell.