14500 Ultrafire showing 0.1 mV after shutoff.

[four2109]

I bought 2 14500Protected Ultrafires with my VV box mod about a month ago.
After shutoff, one batt reads 0.1mV and the other reads 3.56V.
Is this a defect in the battery or the device that is over-draining one batt?
Is the device compromising the protection circuit?
What's the warranty on these batts?
What's the deal Hoogie?

 

[wolfstone5]

Sounds like the protection circuit kicked in. Sometimes it just happens. I have a new 18650 that went dead on me for no apparent reason.

 

[wyattc08]

Some of my 14500's will show 0v when i test them, but they work just fine. I thing my multimeter kicks the protection circuit on sometimes. I see you said that it reads 0.1 mv, but does it work? Does it charge at all?

 

[four2109]

No, When I took them out, the center one read 0.1 mv and the right one read 3.65
So I ran a pair of blue trustfires through it and the same thing happened, same readings on each battery.
I put the two 0.1mV batts in the charger for a minute and rechecked them.
The blue trustfire reset to 3.25 and I was able to recharge it.
The grey Ultrafire was still 0.1 and won't charge.
If this VV is going to eat batteries, that's a deal breaker.
I have only used the VV through about 4 charging cycles and was only using the new Ultrafires in it.
Is anyone else having this problem.

 

[5vz]

I'm not sure if it is the vv, it could be. In any mod with 2 batteries, one will drain faster than the other, I have found.

It could also be the batteries. Some come in brand new and have to be tossed. It's the luck of the draw on batteries, which is why it is good to have a multimeter around. Some come in doa, some only charge around 4 or 5 times before they die. AW's seem to have a better batting average.

The one you have that is not charging needs to be tossed.

 

[four2109]

I'm not sure if it is the vv, it could be. In any mod with 2 batteries, one will drain faster than the other, I have found.

It could also be the batteries. Some come in brand new and have to be tossed. It's the luck of the draw on batteries, which is why it is good to have a multimeter around. Some come in doa, some only charge around 4 or 5 times before they die. AW's seem to have a better batting average.

The one you have that is not charging needs to be tossed.

Thanks, I submitted a ticket and I'm sure they will take care of it. In almost 3 years I have never had a problem with single batt configurations. I don't think the protection circuit is designed to be tripped repeatedly so I'm going back to 3.7. I can build an AC VV passthrough if I need one. Already have one for the car. Madvapes should be working one one right now! Hint! Hint!