ALLNET Rock Pi 4 RTC Battery (CR1220, 3V, JST-PH) for Rock Pi 4 Series

The ALLNET Rock Pi 4 RTC Battery is a dedicated real-time clock backup battery designed for the Rock Pi 4 series single-board computers. This compact CR1220 lithium manganese dioxide cell provides reliable power to maintain time and date settings when the main power is disconnected. With a 2-pin JST-PH connector and 80 mm cable, it plugs directly into the RTC header on Rock Pi 4 boards (A+, B+, C+, Plus).

Advantages

Ensures accurate timekeeping even after power loss; easy plug-and-play installation; long lifespan of several years under normal RTC usage; compact design fits neatly on the board.

Suitable for

• Rock Pi 4 Model A+
• Rock Pi 4 Model B+
• Rock Pi 4 Model C+
• Rock Pi 4 Plus
• Any project requiring persistent RTC functionality

Key specifications

• Battery Type: CR1220
• Chemistry: Lithium Manganese Dioxide (LiMnO2)
• Nominal Voltage: 3V
• Capacity: 35-40 mAh
• Connector: 2-pin JST-PH
• Cable Length: 80 mm
• Battery Diameter: 12.5 mm
• Battery Height: 2.0 mm
• Operating Temperature: -20°C to +70°C
• Non-rechargeable primary cell

Recommendations

For optimal performance, install the battery when the Rock Pi 4 is powered off. Ensure correct polarity matching the RTC header. This battery is a direct replacement for the original RTC battery included with Rock Pi 4 boards.