The way to avoid (NiCad) "memory effect" is to fully cycle (fully charge and then fully discharge) your battery at least once every 2 to 3 weeks.
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This is a Hi-Capacity Brand Memory for your Panasonic Lumix DMC-LX1K. The Hi-Capacity Memory meets or exceeds original manufacturer specifications for Panasonic Lumix DMC-LX1K Memory.