Wolf
Moderator
- Joined
- Sep 25, 2018
- Messages
- 2,009
As a community we all have our different ways of processing cells and I wanted to take the opportunity by starting this thread to find some common ground on how we all should harvest cells.
This is not meant to be a "be all end all" but more of a guide for new members and maybe some senior members alike.
Constructive critique is appreciated as any input that furthers our voyage will make us all better harvesters.
In this instance I will share my Flow Chart that I use it to process my 18650 cells. Kudos to Daromer who as far as I know was the first one to publish his flow chart.
Other Chemistries and formats are going to be different so hence the title "18650 Harvesting Flow Charts"
My chart assumes that you have a supply of 18650 battery packs and have a good understanding of what to expect the pack has for cells and what the likely mAh is of the cells that you will be harvesting.
For Example a 2.5Ah 14.4V pack will most likely have a 4s1p setup with 2500mAh cells
the same runs true for a 6Ah 11.1V pack will most likely be a 3s3p with 2000mAh cells
You should by now be able to tell if the packs are 3s2p or 4s4p and so on.
This chart also relies heavily on IR (the internal resistance of the cell as measured with a 1kHz AC 4 wire meter) as the initial pivot point.
Meters such as the YR1030, YR1035+, and RC3563 supply us with that measurement, are reliable and with my testing have been accurate.
If I open a pack and I spot cells that are corroded or have physical damage I close it up and wrap duct tape around it as it is much easier to drop off at the recycler than individual cells.
The chart assumes if you open a pack you will separate the plastic casing, electronics, and nickel strip residue for recycling.
BTW please publish your flow charts so we can compare notes.
Here is my Flow chart:
Wolf
This is not meant to be a "be all end all" but more of a guide for new members and maybe some senior members alike.
Constructive critique is appreciated as any input that furthers our voyage will make us all better harvesters.
In this instance I will share my Flow Chart that I use it to process my 18650 cells. Kudos to Daromer who as far as I know was the first one to publish his flow chart.
Other Chemistries and formats are going to be different so hence the title "18650 Harvesting Flow Charts"
My chart assumes that you have a supply of 18650 battery packs and have a good understanding of what to expect the pack has for cells and what the likely mAh is of the cells that you will be harvesting.
For Example a 2.5Ah 14.4V pack will most likely have a 4s1p setup with 2500mAh cells
the same runs true for a 6Ah 11.1V pack will most likely be a 3s3p with 2000mAh cells
You should by now be able to tell if the packs are 3s2p or 4s4p and so on.
This chart also relies heavily on IR (the internal resistance of the cell as measured with a 1kHz AC 4 wire meter) as the initial pivot point.
Meters such as the YR1030, YR1035+, and RC3563 supply us with that measurement, are reliable and with my testing have been accurate.
If I open a pack and I spot cells that are corroded or have physical damage I close it up and wrap duct tape around it as it is much easier to drop off at the recycler than individual cells.
The chart assumes if you open a pack you will separate the plastic casing, electronics, and nickel strip residue for recycling.
BTW please publish your flow charts so we can compare notes.
Here is my Flow chart:
Wolf
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