<font color=red>⚠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 this product away from children to ensure their safety.</font>Safety Warning}}
==Overview==
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.
* '''X122-A1 Stackable Kit pin 2.54mm pitch male- For use with X12to-A1 base kit'''- X12-A1 18650 battery holder (4-cell parallel) male cable AWG 10cm x1