I think it is ignorant not to take it apart and learn what was done right. The possibility of discovering the why about this battery far outweigh the nostalgia of wanting to see how many more years it will run. Considering where  we are today with battery technology and the critical importance they play in todays world you would think that science would be more interested to know the answers in the hope they can apply similar methods to improve what we clearly have failed to grasp about this technology. For me what I find amazing, more than the length of time this battery has been working is the utter ignorance of so called educated people who find it more important to want to know how long it will last and seem oblivious to the idea it may hold the proverbial key to what we have been doing wrong since the invention of this technology!,(reply>), This battery holds a tiny amount of energy and powers something that uses a miniscule amount. It's also potted with wax. The key to a good phone battery isn't in there.