So I just bought one of these and my old 18650 battery's where obviously to low on voltage due to not being in use but this charger didn't reconside them it said error null like there wasn't a battery in there so I thought screw it I'll try and charge them in my vape and worked great so I took them out 30 secs later now the charger lii 500 reads them can someone explain please as I'm a little confused how a vape charged them and not a smart charger that can recover battery's thanks
Being very careful I place very low batterys in a parallel board with other chargeable batterys to jump start them taking notice of internal resistance. Use caution and careful monitoring of these cells for rapid heating. Discard cells dead zone cells as needed because some can never be revived....also use computer fans to keep the Liitokayla chargers cool
Exactly! With a simple change of one resistor on the "typical" TP4056 board to a 10K potentiometer plus 1K ohm resistor in series, I can adjust the current anywhere from 50mA up to 1000mA with a simple twist of the potentiometer. For best results with cells below 2.0 Volts, I bring them up to 3.30V very slowly (i.e. - 100mA to 200mA). Once I reach 3.30V, I increase the current to 300mA and continue charging up to 4.00V. I'm constantly checking the temperature of the cell to verify it doesn't overheat and then thermally "run-away". When I reach 4.00V, I perform a discharge cycle. NOTE: I don't perform a capacity test! That option charges the cell up to 4.20V first, then discharges. I want the FIRST cycle to discharge from 4.00V down to 2.80V at 500mA to reduce the stress the cell endures. After discharging down to 2.80V, I charge back up at 500mA all the way to 4.20V and then finally... perform a capacity test. It's a bit labor intensive, but the slow charging/discharging gently eases the old cell's chemistry back to life and minimizes the risks. I've revived 18650's that were discharged down to 0.020V with this method. However, I've noticed that 50% of these "Ultra-Low-Voltage" cells will often have a slow self-discharge after I revive them. Unfortunately it's permanent. It's due to some funky chemistry that goes on when they're left at such a low Voltage for a long duration. The amount of self-discharge depends on how low the cells went and for how long they spent at that "near zero" voltage before being revived.
I believe the 4,35v cells were Sanyo or lg. Something red anyway. But i currently have no bench powersupply. I use an old opus that will take cells from 0.4v, and to bump a 0v cell there, i use a defective cell that always goes down to about 0.4/.5v and charge it in series with whatever i want to charge. I like to use a low voltage cell, so that it won't charge that fast when these cells seem most fragile
If you have a variable DC power supply, you don't have to go through the process of tricking the LiitoKala. Just set the voltage at say 3.2V to start with and limit the Amp setting to whatever you decide, let's say 0.5A. After this, the battery should be revived to normal.
i have LiitoKala Lii-500 when is better to measuring internal resistance ,when is full charged or when is discharged ? it is very different value like 10-90
The resistance has nothing to with capacity or age or quality of the cell. It will be more or less random since the cells are mechanically connected to the tester or the probe
try a cheap charger without all the bell's & whistles to bring up batteries from the dead zone to the living zone where the Lil-500s can recognize them.
So I just bought one of these and my old 18650 battery's where obviously to low on voltage due to not being in use but this charger didn't reconside them it said error null like there wasn't a battery in there so I thought screw it I'll try and charge them in my vape and worked great so I took them out 30 secs later now the charger lii 500 reads them can someone explain please as I'm a little confused how a vape charged them and not a smart charger that can recover battery's thanks
Can you tell us how you wired the parallel holder into the lii-500?
Being very careful I place very low batterys in a parallel board with other chargeable batterys to jump start them taking notice of internal resistance. Use caution and careful monitoring of these cells for rapid heating. Discard cells dead zone cells as needed because some can never be revived....also use computer fans to keep the Liitokayla chargers cool
I use a tp4056 module for cells with low voltage.very effective
Exactly! With a simple change of one resistor on the "typical" TP4056 board to a 10K potentiometer plus 1K ohm resistor in series, I can adjust the current anywhere from 50mA up to 1000mA with a simple twist of the potentiometer.
For best results with cells below 2.0 Volts, I bring them up to 3.30V very slowly (i.e. - 100mA to 200mA). Once I reach 3.30V, I increase the current to 300mA and continue charging up to 4.00V. I'm constantly checking the temperature of the cell to verify it doesn't overheat and then thermally "run-away". When I reach 4.00V, I perform a discharge cycle. NOTE: I don't perform a capacity test! That option charges the cell up to 4.20V first, then discharges. I want the FIRST cycle to discharge from 4.00V down to 2.80V at 500mA to reduce the stress the cell endures. After discharging down to 2.80V, I charge back up at 500mA all the way to 4.20V and then finally... perform a capacity test. It's a bit labor intensive, but the slow charging/discharging gently eases the old cell's chemistry back to life and minimizes the risks.
I've revived 18650's that were discharged down to 0.020V with this method. However, I've noticed that 50% of these "Ultra-Low-Voltage" cells will often have a slow self-discharge after I revive them. Unfortunately it's permanent. It's due to some funky chemistry that goes on when they're left at such a low Voltage for a long duration. The amount of self-discharge depends on how low the cells went and for how long they spent at that "near zero" voltage before being revived.
I believe the 4,35v cells were Sanyo or lg. Something red anyway. But i currently have no bench powersupply. I use an old opus that will take cells from 0.4v, and to bump a 0v cell there, i use a defective cell that always goes down to about 0.4/.5v and charge it in series with whatever i want to charge. I like to use a low voltage cell, so that it won't charge that fast when these cells seem most fragile
I meant parallel, i didn't drink my kaffe yet
If you have a variable DC power supply, you don't have to go through the process of tricking the LiitoKala. Just set the voltage at say 3.2V to start with and limit the Amp setting to whatever you decide, let's say 0.5A. After this, the battery should be revived to normal.
am i missing something, why are you using 2 diff but same chargers?
i guess it's kinda off topic but does anybody know a good site to watch newly released movies online?
@Ishaan Ayden I watch on Flixzone. Just google for it :)
@Toby Issac Definitely, I've been watching on FlixZone for years myself :)
@Toby Issac thanks, signed up and it seems like a nice service =) I appreciate it !!
@Ishaan Ayden Glad I could help =)
Are these chargers any good?
i have LiitoKala Lii-500 when is better to measuring internal resistance ,when is full charged or when is discharged ? it is very different value like 10-90
The resistance has nothing to with capacity or age or quality of the cell. It will be more or less random since the cells are mechanically connected to the tester or the probe
It has nothing to do with the size of the batteries it is about leaking batteries damaging the charger.
Just put the low voltage cell in parallel with a 3v battery for about 10 seconds and they will charge just fine :)
Yes, but then you dont really know if the wants to live... cells that cant reach 2.3V with this test we dont revive since they are to far gone,
Hello guys, Anyone can explain why is this test called NOR? Is there a logic behind like NOR gate or?
NOR=Normal
Thank you for sharing your information and knowledge… 😉
try a cheap charger without all the bell's & whistles to bring up batteries from the dead zone to the living zone where the Lil-500s can recognize them.
lolo how many lii-500 u have ?
Looks like 3. 😃
Really cannot have enough Littokala chargers. I have 7
Why don’t you put the 18650 directly in the charger?
Probably just because it's faster in the special holder¯\(°_o)/¯
More simple, i take "A10 portable magnetic USB charger" 😅
Why tf u wired another battery socket when the charger has already!!!!
Lii-500 does not fir 21700 cells (yet)
Feel free to call me stupid but I forced my 21700 in and charged 🤣
Bump them for a few seconds with 12 volt
Thanks for this tip. Just revived 2 of my batteries.