You’re nitecore may bring it back. I had two separate lap top pulls and the ones that only read 1 volt are holding voltage better than the others that read 3.7. And it’s an excuse to get a voltmeter.
From everything I’ve read lithium cells suffer internal damage when discharged to very low levels (such as internal shorts). Maybe nothing will ever happen but for me it’s not worth the $10 or so to take the chance of experiencing an exciting, and dangerous, event
Yes I suppose it’s not worth a mini explosion in your house. I thought I had read that you could bring them back if you had the right charger. I probably need to do some more research. Thanks Sig!
I read the link and i don’t think thats what they mean. They claim their chargers can detect the battery voltage when it has been over discharged, which, correct me if i am wrong, would be impossible if a pcb had tripped. Seems to me that what d10ten posted earlier about the charger confusing the li-ion battery for a ni-mh battery is what’s happened, the voltage dropping so low. The good thing is that Wrathbringer never came to any harm, assuming the batteries were imbalanced
I read it more carefully and they’re probably talking about reduce level charging the cells until they’re somewhere around 2.5volts and then charging them normally. But the my point still stands that I’d toss the cell because “rescuing it” by no means eliminates any damage to it.
All I know is when I stuck those really drained batteries in my d4 it brought them back to 3. something volts really quick and got them charged with very little heat coming from them. So maybe I lucked out.
nah its got nothing to do with the light. i accidentally mixed up 2 NCR18650B with a single NCR18650PF… I would replace the batteries every half hour of use. but since my sisters were using it till the higher high output were low i guess thats where the fault is…
Yes, but how can you explain that the low voltage warning was not activated on the light!. I thought you can’t use K40M “till the higher high output were low” you should get some warning before that! no? Also how do you explain that mixing B and PF cells would cause so huge load and drainage on PF cell!