Just pulled a battery apart at work from the battery recycling box and there are 2 battery packs with 18 x 18650 cells, no capacity is stated, measured one at 3.7 volts, could be of use?
Just pulled a battery apart at work from the battery recycling box and there are 2 battery packs with 18 x 18650 cells, no capacity is stated, measured one at 3.7 volts, could be of use?
Any battery that comes out of the pack > 3.7v, put it on charge (supervised) and any that charge to >4.1 and don't get hot doing so, set aside. Any that are already <3.7v, get hot or don't get to 4.1v - bin them (well recycle them actually).
The ones that seem ok, store them in a normal room temp environment for 24 hrs and test the voltage again - any that show less that a 0.05v drop after 24hrs are good and keep them - if any sag by more than 0.05v bin them (e.g. 4.11v then 4.05v after 24hrs = bin).
Oh, and don't blow yourself yup when dismatling the pack!
Well every time i buy a cheap torch it doesn't seem to last from one year to the next so now waiting for a ShiningBeam S-mini XM-LT6, TrustFire protected 18650 2400mAh (no AW's but considered a decent budget alternative on CPF) and a XTAR WP2 II charger. This will be a EDC torch for the dark mornings and nights.
Since I bought 4 18650's will probably buy a C8 to leave at work since it won't matter when my staff inevitably break it!
If I could think of a reason for owning one I would also add a BC40.... but it would just sit on a shelf.
On a side note some of the custom torches out there look too good to use !
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