The power-management IC used on Raspberry Pi 5 integrates a real-time clock, and charging circuitry for a button cell which can power the clock while main power is disconnected. The Panasonic ML-2020 Lithium Manganese Dioxide battery, with a two-pin plug suitable for connection to the battery connector on the Raspberry Pi 5 PCB. This item does not currently include double-sided adhesive pad.
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