Changes

The X12-A1 V1.0 is a stackable battery holder rack designed to expand the backup power of UPS HAT systems. It uses a parallel configuration of four 18650 batteries in parallel, providing plug-and-play battery capacity expansion for compatible UPS HAT systems such as the X1209 (top-mountmounted) and X1203 (bottom-mountmounted). Each battery has an independent ultra-low resistance resettable fuse to effectively prevent over-discharge risks; the four parallel XH2.54 interfaces connectors support convenient connection and multi-stand stacking, flexibly increasing the allowing for flexible increases in total power capacity as needed.