How do I replace the battery in my PARK LITE?
Carefully remove the whole battery holder, then remove the old battery. Wipe the new CR 2450 3 Volt battery with a cloth before inserting it, then carefully replace the whole battery holder. Important: after replacing the battery, the clock is automatically reset and all time settings must be re-entered.
From the official Park Lite 1411 Electronic Parking Disc manual, page 73
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