What about a credit card statement? can you check back with that?
Tried that. They weren't impressed. They want their own receipt and nothing else.
You can check the battery date of manufacture by going to Thinkpad Configuration in Control panel, System Information, Details, View Battery information....but if that is over a year, its back to you keeping a receipt for the term of the warranty...
Again, they don't seem to be willing to accept any substitute. I even have the original box that it came in, which has a manufacture date of 10-12-2005. They won't accept a copy of that, either.
While I do agree that there should be some kind of tracking system, if for no other reason that to make it easier for IBM/Lenovo, this type of policy is the same with many retailers, too, regarding electronics. (ie. Target, Wal-Mart, Best Buy, etc.)
I don't know how retailers work in your area, but I don't give them my address or have them ship things to me. If IBM had a retail store, and I walked in and paid with cash, leaving no paper trail whatsoever, I could understand them not having record of the transaction.
But instead, I purchased through their website. I filled in the shipping and credit card information. But yet they claim that they can only look up the purchase by the purchase number and nothing else.