Lenovo ThinkPad Advanced Ultrabay Battery III - rechargeable batteries

I bought this for the Lenovo T500 but it turned out to be wrong and I can't return it because of the stupid law for battery transpotation.It was wrongly described,it was described to fit T500 but it does not fit.I'm stuck with it as I can't post it back or send it by any courior as they won't transport lithium batteries,although it is not damaged or anything like that it just is wrong battery for T500.very wrong description made me waste about £47I would be surprised if I can get refund without being able to return the battery.