I have access to a large number of "junk" battery packs from medical equipment. Due to the highly regulated industry, and how they are taken out of service with the slightest hint of lost capacity, I expect to find a good number of high quality cells this way.
My first challenge however is identifying them. Each battery has 9 cells in it and is stamped "11.1V 5.7Ah 63Wh" The cells themselves look like Sanyo UR18650Ycells from the database (though I'd call the ring yellow rather than green?) But they don't say UR18650Y, instead they have a "B" near the top, and thenlower down they say"PD5V32" followed by a number that's different on each cell (possibly a serial number?) There is no other writing anywhere on the cells.
Any of this ring a bell for anyone? searching that PD5V32 on google or on this site gave me nothing, and it seems like I should find out more to be able to properly test/re-use these?
My first challenge however is identifying them. Each battery has 9 cells in it and is stamped "11.1V 5.7Ah 63Wh" The cells themselves look like Sanyo UR18650Ycells from the database (though I'd call the ring yellow rather than green?) But they don't say UR18650Y, instead they have a "B" near the top, and thenlower down they say"PD5V32" followed by a number that's different on each cell (possibly a serial number?) There is no other writing anywhere on the cells.
Any of this ring a bell for anyone? searching that PD5V32 on google or on this site gave me nothing, and it seems like I should find out more to be able to properly test/re-use these?