Recently, a friend of a friend was cleaning out an R&D facility at a local university and discovered a stash of 18650 cells that were tagged as scrap. Knowing I'm a flashlight-and-battery enthusiast, this friend of friend gave me two boxes of these cells. Each box contains 30 unwrapped cells, and a Sanyo product label was affixed to the outer carton in which the two boxes of cells were packed.
Each cell is imprinted with the following info: A_LLIU6 followed by what appears to be a unique, six-digit serial number; e.g., 077835.
There's also a large upper-case "C" and the word "JAPAN" imprinted on each cell.
According to the label on the carton, these are Sanyo UR18650U cells, but I can't seem to find much info about them online. I'd like to know how old they are and their capacity. Are they useful as is or should I recyle them? Should I "wrap" these bare cells before attempting to use them? (I have an OPUS BT-C3100 charger.)
Thanks in advance for any info you can provide. See photos below: