X1209

Overview

The X1209 is a dedicated UPS expansion board for the Raspberry Pi, delivering reliable 5.1V/6000mA backup power to ensure uninterrupted operation. It is designed to support demanding setups, including those running intensive applications or multiple peripherals.

Its advanced power management system intelligently monitors the Raspberry Pi’s status, automatically cutting off power after shutdown to optimize battery life with ultra-low standby consumption. The board also features seamless power switching during outages or adapter failures, and supports convenient functions like auto power-on and AC power loss detection.

Additionally, the X1209 offers fast charging up to 2100mA for quick battery replenishment and integrates seamlessly with compatible storage products for reliable data backup during power loss. This combination of features enhances system reliability, protects valuable data, and ensures continuous operation for Raspberry Pi users.

Model	Compatible with	Position	Lithium battery type	Battery Holders	Power Input	Power Output	Note	Matching Case
X1200	Raspberry Pi 5	Bottom	3.7V 18650 Battery	2-Cell	5Vdc 5A via USB Type-C of X1200	5Vdc Power Output XH2.54-2P x2	-	X1200-C1
X1201	Raspberry Pi 5	Bottom	3.7V 18650 Battery	2-Cell	5Vdc 5A via USB Type-C of X1201 5Vdc ≥3A via XH2.54-2P connector of X1201	5Vdc Power Output XH2.54-2P x3	Ultra-thin	X1201-C1
X1202	Raspberry Pi 5	Bottom	3.7V 18650 Battery	4-Cell	5Vdc 5A via USB Type-C of X1202 6-18Vdc ≥3A via DC 5521 power jack of X1202 6-18Vdc ≥3A via XH2.54-2P connector of X1202	5Vdc Power Output XH2.54-2P x2	-	X1202-C1
X1203	Raspberry Pi 5	Bottom	3.7V 18650 Battery	No battery holder	5Vdc 5A via USB Type-C of X1203 6-18Vdc ≥3A via DC 5521 power jack of X1203 5Vdc ≥3A via XH2.54-2P connector of X1203	5Vdc Power Output XH2.54-2P x2	-	-
*X1205	Raspberry Pi 5	Bottom	3.7V 21700 Battery	2-Cell	5Vdc 5A via USB Type-C of X1205 9-18Vdc ≥3A via DC 5521 power jack of X1205 9-18Vdc ≥3A via XH2.54-2P connector of X1205	5Vdc Power Output XH2.54-2P x2	-	X1205-C1
*X1206	Raspberry Pi 5	Bottom	3.7V 21700 Battery	4-Cell	5Vdc 5A via USB Type-C of X1206 5-6Vdc ≥3A via DC 5521 power jack of X1206 5-6Vdc ≥3A via XH2.54-2P connector of X1206	5Vdc Power Output XH2.54-2P x2	-	X1206-C1
*X1207	Raspberry Pi 5	Top	3.7V 21700 Battery	1-Cell	5Vdc 5A via USB Type-C of X1207 35-57VDC powering over Ethernet	5.1V ±5% Max 5A	-	--
*X1208	Raspberry Pi 5	Top	3.7V 21700 Battery	1-Cell	5Vdc 5A via USB Type-C of X1208	5.1V ±5% Max 5A	Support M.2 NVMe SSD	--
*X1209	RPi 5B/4B/3B/3B+	Top	3.7V Battery	No battery holder	5Vdc 5A via USB Type-C of X1209 6-18Vdc ≥3A via DC 5521 power jack of X1209	5.1V ±5% Max 6A	-	--

Safety Instructions & warnings

The default charging current is set to 2.1A and charge cut-off voltage is 4.23V. Before connecting your battery to the UPS board, Please carefully confirm the maximum charging current and voltage, exceeding the upper limit of the charging specification that the battery can withstand will not only cause adverse reactions, but may also cause irreversible damage.
It is essential to read and understand these safety instructions and warnings before charging your batteries.
Lithium Polymer and Li-ion batteries are volatile. Failure to read and follow the instructions below may result in fire, personal injury, and damage to property if charged or used improperly.
Never make a wrong polarity connection when charging or discharging battery packs. Always double-check the polarity of the battery's connector to ensure that "+" is connected to "+" and "-" is connected to "-".
Do not mix and use old batteries with new batteries, or batteries with different brand names.
Lithium batteries have a limited cycle life. Please replace old batteries with new ones when they reach their service life or when they are two years old, whichever comes first.
When charging the Battery Pack, please place the battery in a fireproof container. Do not leave the UPS shield on wood material or carpet unattended.
Keep the UPS shield away from children to ensure their safety.

Features

For use with	Raspberry Pi 5 Model B / 4 Model B / 3 Model B
Key Features	UPS Output Designed for continuous long-duration operation (duration depends on battery type and applications) Supports a maximum current output of 5.1V 6000mA, suitable for most Raspberry Pi applications Integrated Advanced Power MOSFET with an equivalent of 7mΩ RDS(ON) to minimize power loss Power the Pi directly through the 40-pin header, eliminating the need for cables and soldering Equipped with XH2.54 connectors for 5V power output Battery Charging Supports fast battery charging with a capacity of 2100mA Battery charging control can be managed via GPIO Provides protection against battery overcurrent and overvoltage Built-in protection against reverse connection of battery cells Integrated Maxim's fuel-gauge systems for reading battery voltage and percentage over i2c On-board LEDs indicate battery charging and discharging levels of 25%, 50%, 75%, and 100% Features two XH2.54 battery connectors Power Input Integrated high-efficiency step-down DC-DC converter Wide operating input range of 6V to 18V Provides up to 6A output current, enabling 2.1A fast charging while powering the system Allows power input from various sources such as a car, solder panel, and more Common power input jack size of 5.5x2.1mm Compatible with Raspberry Pi USB-C Power Supply Enhanced Power Management Seamless power switching between backup power and power adapter On-board push button performs the same actions as the Pi's power button (Pi 5 only) Automatically cuts off power when the Pi is shut down On-board LED indicates power status and Pi detection AC power loss and power adapter failure detection via GPIO Auto power-on when power is applied or restored Automatic safe shutdown when battery voltage is low (programmable) Ultra-low standby power consumption to maximize battery life Advanced system power-path management to minimize frequent charging and discharging of batteries Compatible Accessories X1002 single NVMe shield for Pi5 X1005 dual NVMe shield for Pi5 X1006 PCIe to SATA 2.5 HDD+M.2 SSD shield for Pi 5 X1007 PCIe to dual SATA 2.5 HDD/SSD shield for Pi 5 X1100 USB3 to SATA 2.5 HDD/SSD shield for Pi 5 Other add-on boards are attached to the bottom of the Raspberry Pi
Technical Specification	Power input: 6-18Vdc via DC jack (12Vdc ≥3A power adapter recommended) 5Vdc 5A via USB-C UPS output:5.1V ±5% Max 6A Battery charging current: 2.1A (IMPORTANT !!-- Please confirm before connecting your battery.) Terminal Battery Voltage: 4.23V (IMPORTANT !!-- Please confirm before connecting your battery.) Battery Recharge Threshold: 4.1V Ports & Connectors: DC power jack x1- 5.5x2.1mm USB-C power in connector x1 XH2.54 battery connector x2 5V Power output connector x2 - XH2.54 2-pin 40-pin extended GPIO header x1 PCB Size: 65mm x 57mm
Notes	Do not apply power to your Raspberry Pi via the Type-C USB socket.

Packing List

X1209 V1.0 UPS board x1
Spacer M2.5 F/F 13.5mm x4
Screw M2.5x5mm x8
Pogo pin x1 (For use with Pi 5 only)

User Manual

Hardware Installation: X1209 Hardware
How to make it work: X1209 Software

FAQ

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