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Lithium-ion batteries, unlike nickel-cadmium batteries, have no "memory effect" that can reduce the usable power of the battery over time.
For use with the following Canon camcorders: Elura 70, Elura 65, Elura 60; Optura 40, 30, 400, 500, 50 and 60; ZR400, 100, 200, 300.
