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June 16, 2022

Manganese-titanium Battery Chemistry FAQ

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Manganese-Titanium (Lithium) Cells

Anode: Lithium-Titanium Oxide

Cathode: Lithium intercalated Manganese Dioxide


Applications: Watches, other ultra-low discharge applications

This technology might be called Manganese-Titanium, but it is just another lithium coin cell. It has "compatible" voltage – 1.5 V to 1.2 Volts, like the Lithium-Iron cell, which makes it convenient for applications that formerly used primary coin cells. It is unusual for a lithium based cell because it can withstand a continuous overcharge at 1.6 to 2.6 volts without damage. Although rated for 500 full discharge cycles, it only has a 10% a year self-discharge rate, and so is used in solar charged watches with expected life of 15+ years with shallow discharging. The amp-hour capacity and available current output of these cells is extremely meager. The range of capacities from Panasonic is 0.9 to 14 mAH (yes, 0.9 milliamp hours). The maximum continuous drain current is 0.1 to 0.5 mA.

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