The world's longest lasting, highest energy cell is Tadiran, the ONLY battery PROVEN to last up to 40 years.
Battery - Non-Rechargeable - AA - Lithium - 3.6VDC - 2.1Ah - Axial Pin.
Battery - Non-Rechargeable - AA - Lithium - 3.6VDC - 2.1Ah - Pressure Contact.
Battery - Non-Rechargeable - Cylindrical - Lithium - 3.6 VDC - 1Ah - Axial Pin.
Battery - Non-Rechargeable - Cylindrical - Lithium - 3.6 VDC - 1Ah - Pressure Contact.