Raspberry Pi RTC Battery – Backup Power for the Real-Time Clock
The Raspberry Pi RTC Battery is a rechargeable Panasonic ML-2020 lithium manganese coin cell (~45mAh) with a two-pin JST connector for the “BAT” header on Raspberry Pi 5. It powers the on-board real-time clock (RTC) when the Pi is disconnected from external supply.
Features
- Panasonic ML-2020 coin cell, approx.45mAh capacity
- Rechargeable via Pi’s built-in RTC charging circuit
- Pre-fitted 2-pin JST connector matching Pi 5’s header
- Double-sided adhesive pad for mounting inside cases
- Maintains clock state during complete power-off
Technical Specifications
- Type: Lithium manganese dioxide rechargeable coin cell (Panasonic ML-2020)
- Capacity: ˜45mAh
- Nominal voltage: ~3V
- Connector: 2-pin JST for Pi 5 “BAT” header
- Rechargeable: via integrated charging circuit on Pi 5
Note: Once installed, the battery automatically recharges while the Raspberry Pi is powered and preserves RTC time through full shutdown.
Product safety information
Manufacturer information:
Raspberry Pi Ltd.
Cambridge Science Park, Milton Road 194
Cambridge, Vereinigtes Königreich, CB4 0AB
compliance@raspberrypi.com
https://www.raspberrypi.com
Responsible person:
Raspberry Pi Ireland Limited
Dublin Landings 3
North Wall Quay, Dublin 1, Irland, D01 C4E0
compliance@raspberrypi.com
https://www.raspberrypi.com
