Sofirn 14500*trippy funky moves

I charged the battery last night to full. The flashlight would turn on for a brief moment but that’s it. I then put battery into Charge/Discharge but after 20 mins decided to try the battery in flashlight and it works find. Then I did a full charge and after it was full(~10 mins), tried the flashlight and it doesn’t work again?? Does this has something to do with protection tripping? What do I do now?

Do you have a dmm to see what the battery voltage is?

Yeah it was 4.10v when the flashlight wasn’t working. I was thinking to put it tru Charge/Refresh cycle maybe?

It’s not an UltraFire battery is it? You mentioned in another post that you had issues with one of those. All bets are off with xxxFire batteries.

My personal opinion is that refresh cycles do nothing to help li-ion batteries. All they do is use up cycles and with UltraFires you probably have very few anyway. What refresh cycles help are NiMh batteries especially if they haven’t been used in a long time, or have been abused to some degree.

You should do yourself a favor and toss any Ultrafire batteries you have and get some decent one.

Ok I didn’t know that. Good thing I have some old Duracell’s I’ll try.
My Sofirn 14500 battery is dead. I tried the shorting it way, Charging it, Discharge. Nothing works. Anyways if I contact Ali, do I have a chance of getting a new one?