100kwh-hunter
Active member
- Joined
- Mar 2, 2019
- Messages
- 1,374
Good day to all,
I've done some good reading around this million dollar site.
Went back 7-8 months in time!
I came up with the following, feel free to correct or supplementwhere you think it might be necessary.
I want to do this from cell one properly, please.
We have some cells after harvest, we don't know nothing about them, no soc soh ect.
#0: write down the original mah on the cell
#1: charge them to 4.2 volt, with 500mah, check for heaters
#2: we leave them for one week minimal, i am set for twoweeks.
#3 check volt drop if its more then 0.3v: start over to wake upor bin?
#4 discharge to 3.5v to let the tp charge it again to 4.2v(1ah) exactly, check for heaters.
#5 testing the discharge according to fabric specifications(v and mah). Write the outcomedown on the cell
#6 charge to 3.5v for storage(in my case charge to 4.2 and than discharge to 3.5).
My powerwall will work with less than 500mah per cell, and in between 3 and 4 volt, no more no less, i think.
I am going to use some tc and tp 4056 and the zb2l3 in my setup.
I understand that the voltage out on the tp must be checked if the are the same( to "pair" them), I will order a 30 pieces and find ten that are exactly the same in volt output, for the capacity test.
Now the zb2l3 can be calibrated, if you have some equipment for it, I dont have those kind of lab stuff, sorry for me.
But there was a way to "pair" them with a condensator/capacitor, how do you do that?
The cells that wont charge, they will get a manually charge to 3,3 volts
I am planning to use a power supply from a computer.
I also have in possession some really heavy power supply's that can be regulated between 4 and 6 volt, or just stick with the power supply from a computer?
I hope i am on the right track now, i really want to get started, more and more battery's are flying in.
Got some if not a lot of questions and i hope to see some answers hints and tricks for this trade.
Let me hear your thoughts on this
Thanks in advance!
I've done some good reading around this million dollar site.
Went back 7-8 months in time!
I came up with the following, feel free to correct or supplementwhere you think it might be necessary.
I want to do this from cell one properly, please.
We have some cells after harvest, we don't know nothing about them, no soc soh ect.
#0: write down the original mah on the cell
#1: charge them to 4.2 volt, with 500mah, check for heaters
#2: we leave them for one week minimal, i am set for twoweeks.
#3 check volt drop if its more then 0.3v: start over to wake upor bin?
#4 discharge to 3.5v to let the tp charge it again to 4.2v(1ah) exactly, check for heaters.
#5 testing the discharge according to fabric specifications(v and mah). Write the outcomedown on the cell
#6 charge to 3.5v for storage(in my case charge to 4.2 and than discharge to 3.5).
My powerwall will work with less than 500mah per cell, and in between 3 and 4 volt, no more no less, i think.
I am going to use some tc and tp 4056 and the zb2l3 in my setup.
I understand that the voltage out on the tp must be checked if the are the same( to "pair" them), I will order a 30 pieces and find ten that are exactly the same in volt output, for the capacity test.
Now the zb2l3 can be calibrated, if you have some equipment for it, I dont have those kind of lab stuff, sorry for me.
But there was a way to "pair" them with a condensator/capacitor, how do you do that?
The cells that wont charge, they will get a manually charge to 3,3 volts
I am planning to use a power supply from a computer.
I also have in possession some really heavy power supply's that can be regulated between 4 and 6 volt, or just stick with the power supply from a computer?
I hope i am on the right track now, i really want to get started, more and more battery's are flying in.
Got some if not a lot of questions and i hope to see some answers hints and tricks for this trade.
Let me hear your thoughts on this
Thanks in advance!
