Can A Protected Battery "Recharge" Itself?

[WillieB69]

On my way home from work this evening, my box mod acted like the battery was giving up the ghost for the day. Since I didn't want to hassle with changing batteries while driving, I waited until I got up to a red light and switched my carto over to one of my 510 mega batteries.

After I got home, I put the carto back on the box mod to get the last few puffs before putting the battery on the charger and the darn thing is vaping like a mad dog now. It's been going strong for about an hour with no signs of letting up. It's actually vaping better now than it did fresh out of the charger this morning.

Same carto, same juice, same battery..... More vapor. What's up with that?

 

[Nobodyatall]

A bit of a bad connection earlier? That sort of thing could explain it.

 

[WillieB69]

It's possible.
Although I've noticed this with cell phone batteries as well. My cell will die and shut down. After a few minutes I can power it back up and it will have an extra bar or two that will last for just a few minutes if I make a call or try to text someone.

Maybe I have some sort of mutant power that recharges dead batteries like the X-men?

 

[SurvivorMcGyver]

Most, if not all, of mine will regain voltage after a rest - not unussual for me. I've actually watched the voltgae build on a meter after each vape - It sometimes builds beyond the start value BEFORE the vape - go figure - chemicals at work

 

[duby]

What batteries are you using? What charger? I am assuming with a 3ohm 510 carto.

So yeah the chemicals can act a little funny at times. Under high drain batteries can develop and internal resistance. The same thing happens under high charge rates which is what it sounds like might be happening.

So in the high charge rate/overcharge case, the battery starts to resist being charged too quickly. The electrons being fed into it simply can't be stored fast enough, so it starts to resist and push back a bit.
Now most chargers are dumb and will keep pushing electrons into the battery even when this occurs. So eventually the battery will reach its capacity, or a state of potential difference that resembles the battery at max capacity. (Simply put, eventually the voltage will hit 4.2V, but this doesn't necessarily mean the battery is as full as it once could be).
You can kind of think of this internal resistance as built up gunk. Its there now, often it will clear itself out after some time, but sometimes it will be left there. Give it some more time, or charge/discharge it a time or two and the gunk clears out. This is once of the advantages of balance chargers.

In the over discharge case (Which is very common amongst E-cig users), electrons are flowing out of the battery faster than the chemical reaction can free them up. So in this case internal resistance develops or voltage sags. Giving it a rest for a bit, gives the chemical reaction time to catch up and stack electrons back on one side of the battery.

 

[WillieB69]

Wow. Very informative. For what it's worth, I'm using the gray Ultra Fire 14500 from Mad Vapes and this charger: AG-126 Lithium Ion Battery Charger

I had noticed this battery slacking off a bit over the last week but tonight it ran like a champ. (I can actually tell my two batteries apart by marks on them.) It finally wore out again after about 4 hours of heavy vaping and is back in the charger.

 

[REDDOG1]

batts will regenerate some when drained and left idol but not much