Side Note - the Lower Self-Discharge rate is important for applications in which you are putting the battery out there in Gas/Water meters to run for 20 years. That isn't a shelf life of 20 years, that's actually _working_ for 20 years. Admittedly, most of the time the device it's powering is in a deep hibernation state, and only waking up once a day and doing a (very brief) radio transmission, but the tolerances become very important - particularly if you are deploying several million of these into the field.