Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

FS Lithium Ions 18650s

Joined
Feb 24, 2014
Messages
1,425
Points
83
For sale

two lg authentic 18650s never used 12.50 plus 5.80 shipping 2600 mah
2 lg 2200 mah lap top pull batts 12.50 plus 5.80 in shipping
2 Moli Ecells lap top pull batts 12.50 plus 5.80 for shipping

all laptop batts have been drained and recharged and cycled though and hold a proper charge of 4.2 volts. if interested pm me may be open for negotiations
price is firm but will think of trades plus shipping

shipping can not be negotiated!


thanks V
 





rhd

0
Joined
Dec 7, 2010
Messages
8,475
Points
0
What was the original capacity of each type of cell?
 
Joined
Nov 2, 2012
Messages
626
Points
43
Also, how old are the cells, i.e. when did you purchase them? Li-ions degrade over time regardless of whether or not they are cycled.
 

rhd

0
Joined
Dec 7, 2010
Messages
8,475
Points
0
Also, how old are the cells, i.e. when did you purchase them? Li-ions degrade over time regardless of whether or not they are cycled.

Oh wait, are the capacities posted in the OP not the current capacities, but just the original ratings? That changes things a lot. I think you'll have trouble charging $6+ per cell for used cells with no capacity test. That's basically retail pricing for new cells.
 
Joined
Feb 24, 2014
Messages
1,425
Points
83
the first to are unuses bran new cells and the laptop pulls I will go as low as 4 per cell or 8 plus shipping and all of the laptop pulls got to 4.2 volts no problem
 

rhd

0
Joined
Dec 7, 2010
Messages
8,475
Points
0
Something worth understanding -

Hitting 4.2V with no problem, says nothing about the capacity of the cell. Cell capacity degradation doesn't prevent the cell from charging up to 4.2v.

ONLY a discharge test will tell you how much capacity is possible with a cell.

I have dozens of cells that charge to 4.2V, but hold only 500mAh, etc.

Not hitting 4.2V with ease certainly means there is a problem, but that doesn't work in reverse. Hitting 4.2V doesn't mean the cell has it's rated capacity (and if it's a used cell, it likely doesn't).

I say this having harvested literally 200+ 18650s over the past two years, recycling the bad ones, and using the good ones.
 




Top