X306 is a cell UPS expansion board designed for Raspberry Pi Zero 2W.
Enhanced Battery Holder: X306 V1.5 (Oct 2025) upgrades the battery holder for smoother installation, removal, and long-lasting reliability (battery is not )
Compatibility: with Raspberry Pi Zero 2 W ONLY, NOT Raspberry Pi Zero/Zero W; Model: X306 V1.5; Matching Case: X306-C1 is the case for X306 V1.3 and V1.5
-Cell UPS HAT: Ideal Uninterruptible Power Supply (UPS) solution for Raspberry Pi Zero 2W, Max 5.1V 4000mA Power Backup with single cell battery holder(battery is not )
How to Power: Power via USB -5V Power In port of X306; 5Vdc +/-5% , ≥3A; Use UL listed 20W 5V 4A USB -power adapter
Cooling Solution: Recommend to use with C296 aluminum heatsink for Raspberry Pi Zero 2 W
Packing List: 1 x X306 Expansion Board; 4 x M2.5x5mm screws(Raspberry Pi and Battery NOT )