The X12-A1 V1.0 is a 4-cell parallel 18650 stackable battery holder rack designed to accommodate expand the backup power of UPS HAT systems. It uses a parallel configuration of four 18650 batteries, providing plug-and-play battery capacity expansion for compatible UPS HAT systems such as the [[X1209]] (top-mounted) and [[X1203]] (bottom-mounted). Each battery is protected by a resettable has an independent ultra-low resistance resettable fuse to effectively prevent over-discharge. It features risks; the four parallel XH2.54 connectors for easy integration with UPS HAT models such as the X1209 support convenient connection and X1203, and supports a stackable designmulti-stand stacking, allowing for flexible increases in total power capacity expansion through multiple basesas needed.
==Features==
* '''Stacking Design: '''Supports multiple stacks (requires the X12-A1 stacking kit), flexibly expanding total power capacity.
* '''Compatible Models:''' [[X1209 ]] UPS HAT (top-mounted Raspberry Pi), [[X1203 ]] UPS HAT (bottom-mounted Raspberry Pi).
*'''Core Application: '''The X12-A1 provides a backup battery expansion solution for the aforementioned UPS HATs.
==Technical specification==
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| '''Operating voltagePorts & Connectors''' || XH2.54 2Pin parallel interface x 4 5V DC (4.5 – 5.5V) supplied via four-pin fan header on a carrier boardcell 18650 battery socket x1