They are ibm computer batterys i think they are for lap tops im not sure on there they was giving to me and they in my way so insteed of towing them away thought someone might use them or want them :)
I have an IBM thinkpad and it needs a new battery and maybe one of those batterys may work It be nice if you can check then I'd all them off your hands. IBM Thinkpad laptop
Each item has what's called an "FRU" number. That number in a google search will tell you EXACTLY what the item is and what models it can be used with. To a Thinkpad owner, that info is very important.