View source for Report/Lithium packs recycling

[[Category:Articles]]

== What ==
There were 4 packs and some singles of lithium batteries laying around the Base. I took them, cracked open the cases, tried to recharge individual cells. Kept the cells that are able to hold some charge, dumped the others into according type of waste.

== Why ==
* I wanted to assemble a battery pack for our devices.
* Lithium batteries degrade when shelved and uncharged.

== How ==
* Cut the side opposite to terminals with a hacksaw, then pry carefully until it cracks open.
* Measure the pack for undervoltages.
* If no undervoltages, try to charge the whole pack. Note the number.
* Disconnect from the control circuit and cut some metal strips to be able to charge individuals.
* Cycle-charge indivudial cells and mark the capacity measured.
* Keep the good ones and profit.

== Equipment used ==
* IMAX B6 charger
* 3 x 8 cell pack, 1 x 3 cell pack, two cell phone batteries

== Result ==
* Cell phone batteries had cap. 400 mAh, were dumped.
* Out of 27 individual LiIon cells 14 were dead.
* The capacities of the rest lay in the interval of 700 - 1600 mAh (these have original capacity 3000 mAh and more)
* The good ones are being cycle-charged to confirm the capacity for possible re-packing.

{| class="wikitable" style="width: 100%"
 !Marked as *
 !Type
 !Capacity estimate [mAh] **
 !Located
 !
 |-
 |A1
 |Li-Po
 |200
 |Recycle bin
 |
 |-
 |A2
 |Li-Po
 |200
 |Recycle bin
 |
 |-
 |A3
 |Li-Po
 |0
 |Recycle bin
 |
 |-
 |A4
 |Li-Po
 |0
 |Recycle bin
 |
 |-
 |A5
 |Li-Po
 |1600
 |
 |
 |-
 |A6
 |Li-Po
 |1400
 |
 |
 |-
 |A7
 |Li-Po
 |0
 |Recycle bin
 |
 |-
 |A8
 |Li-Po
 |0
 |Recycle bin
 |
 |-
 |B1 .. B8
 |Li-Po
 |0
 |Recycle bin
 |
 |-
 |C1
 |Li-Po
 |1400
 |
 |
 |-
 |C2
 |Li-Po
 |1900
 |
 |
 |-
 |C3
 |Li-Po
 |1600
 |
 |
 |-
 |C4
 |Li-Po
 |1700
 |
 |
 |-
 |C5
 |Li-Po
 |1100
 |
 |
 |-
 |C6
 |Li-Po
 |800
 |
 |
 |-
 |C7
 |Li-Po
 |1800
 |
 |
 |-
 |C8
 |Li-Po
 |1600
 |
 |
 |-
 |D1 .. D3
 |Li-Po
 |1700
 |
 |
 |-



}
/* black marker
/** most of the cells were charged only once or twice and not fully discharged before