Dennis Van Hoek
Member
- Joined
- Jul 8, 2017
- Messages
- 51
A productive weekend.
I found this form, introduced myself and managed to strip down 10 more power packs to harvest useable cells.
+/- 450 Cells and counting(allneed to be cycled/charged)
introducing the powerpacks:
54,4V usedin PPE equipment
34 cells A123 26650 in each pack
I dont have the BMS for these packs and the are 54,4 V.
I have a 12V system in my house so I will brake down these packs check the cells and make custom packs.
http://lygte-info.dk/review/batteries2012/A123 26650 2500mAh (Green) UK.html
How I harvestmy Cells:
Starting with removing the soft heatsink check what the Voltage is if any good I start with stripping.
Cutting all the wires from the old BMS
I don't know how you guys removespot welded strips.
I use a sharpchisel to lift a corner and peel them off with pliers while guiding the strip to prevent Sparks... :angel:
same procedure on the other side.
Then the "fun part" taking all cells apart.
They areglued together so most of the heat shrink peals off. (I ordered new shrinks since the positive side is on the outside...)
Stripping them takes me 20 Min each for the standard ones.
Unfortunately I also found that a lot ofpacks are "dead" 0 Volts.
Also on the cells.
I'm not sure if I can "bring them back" So I stripped 2 down for testing later on.
For now I'm focused on stripping working packs that still give 50ish V.
These packs arereplacedafter 2 years of use orwhen they don't work any more.
I must have been lucky with the first packs because they where all good 50ish V
And all others are unknown...
I also have some sealed packs that are crackedtheytake over a hour to strip and they only have 17 cells..
But these are all from a new model from 2016, So all new cells
Thats it for now. i'm waiting to get newheat shrink and plastic cell holders in.
I'm not sure about the pack size's I want to build.
First I will use the packs in my offgrid house and in my T3 camoperVan.
I'm also thinking about a EV conversion of my T3 campervan so I might want to create apackwith 12V i can use inhouse and place together300ish Volt in the car..
I found this form, introduced myself and managed to strip down 10 more power packs to harvest useable cells.
+/- 450 Cells and counting(allneed to be cycled/charged)
introducing the powerpacks:
54,4V usedin PPE equipment
34 cells A123 26650 in each pack
I dont have the BMS for these packs and the are 54,4 V.
I have a 12V system in my house so I will brake down these packs check the cells and make custom packs.
http://lygte-info.dk/review/batteries2012/A123 26650 2500mAh (Green) UK.html
How I harvestmy Cells:
Starting with removing the soft heatsink check what the Voltage is if any good I start with stripping.
Cutting all the wires from the old BMS
I don't know how you guys removespot welded strips.
I use a sharpchisel to lift a corner and peel them off with pliers while guiding the strip to prevent Sparks... :angel:
same procedure on the other side.
Then the "fun part" taking all cells apart.
They areglued together so most of the heat shrink peals off. (I ordered new shrinks since the positive side is on the outside...)
Stripping them takes me 20 Min each for the standard ones.
Unfortunately I also found that a lot ofpacks are "dead" 0 Volts.
Also on the cells.
I'm not sure if I can "bring them back" So I stripped 2 down for testing later on.
For now I'm focused on stripping working packs that still give 50ish V.
These packs arereplacedafter 2 years of use orwhen they don't work any more.
I must have been lucky with the first packs because they where all good 50ish V
And all others are unknown...
I also have some sealed packs that are crackedtheytake over a hour to strip and they only have 17 cells..
But these are all from a new model from 2016, So all new cells
Thats it for now. i'm waiting to get newheat shrink and plastic cell holders in.
I'm not sure about the pack size's I want to build.
First I will use the packs in my offgrid house and in my T3 camoperVan.
I'm also thinking about a EV conversion of my T3 campervan so I might want to create apackwith 12V i can use inhouse and place together300ish Volt in the car..