How to "wake-up" my "dead" LiIon battery?

[petar k]

...since i'm "new" here (with posts) i had to open my topic in newbies section, so i'm "moving" it here (if it's ok by admins).
http://www.e-cigarette-forum.com/fo...181766-how-wake-up-my-dead-liion-battery.html

i'm not satisfied by those answer, and i believe we can bring that battery to "life".
(i have nothing to vape on now, so i have to wait until Tuesday to get new batteries

 

[Rui P.]

yes you can

 

[petar k]

sorry, can what?

 

[Para]

...as a last resort, hook up a 9v to the battery. Do a google for the steps and what it does.

 

[Rui P.]

all you you need is a NIMH charger , 5 min in the NIMH charger , if doesn´t work , try more 5 minutes and you are done

 

[petar k]

as i said in that topic in newbies section, i have already googled for some tricks, and all i found was about lap-top batteries.
can you tell me how to do that? plz

 

[petar k]

@Rui P - i have no NIMH charger, i have just "regular" one that i charge LiIon-s on. it's some multi charger for different sized LiIon batteries.

 

[Rui P.]

your battery needs to reach 2,8-3,0v so you can charge it again , you need a way to power up the battery to that voltage , what is the battery we are talking about ?

 

[petar k]

all is described in the earlier topic here: http://www.e-cigarette-forum.com/fo...181766-how-wake-up-my-dead-liion-battery.html

 

[Jair]

I would toss it and get a new one. From what I understand, the reason the PCB won't let you charge the batt once you drop below a certain voltage threshold is that it is potentially dangerous to recharge an over-discharged li-on.

 

[kcofohio]

If overheated or overcharged Li-ion batteries may suffer thermal runaway and cell rupture.[48] In extreme cases this can lead to combustion. Deep discharge may short-circuit the cell, in which case recharging would be unsafe.[49] To reduce these risks, Lithium-ion battery packs contain fail-safe circuity that shuts down the battery when its voltage is outside the safe range of 3–4.2 V per cell.[25][37] When stored for long periods the small current draw of the protection circuitry itself may drain the battery below its shut down voltage; normal chargers are then ineffective. Many types of lithium-ion cell cannot be charged safely below 0°C

This from Wikipedia

 

[petar k]

just to say, the batt is working now i removed PCB and it's all fine now.

 

[ZoSo15]

You aren't vaping on it are you???

We use protected batteries for a reason. Removing the protection can result in your pv blowing up in your face!

 

[petar k]

i'm using it in serial connection with protected one. i'm aware of overcharge/overdischarge and +/- short connections.
btw, does using it with the protected one, means safer usage?

 

[asdaq]

No it doesn't. Protection circuits are per battery only. A laptop uses unprotected cells but has a centralized board to monitor cells individually.

If you've managed to get it back up below the minimum charge it would be a good idea to put the pcb back on and use large shrink wrap tubing to seal it back together. Or, as already mentioned, replace it.

 

[JWebb]

Toss it and buy some new batteries, they are cheap and its not worth the risk.

 

[petar k]

i would buy it "yesterday" if i could find it here.

 

[asdaq]

If you have a Janty dealer there they sell 10440's for the 'janty stick', but rather high in price.