X12-A1

X12-A1 V1.0

X12-A1 Interface

X12-A1 Application

X12-A1 Battery Specifications

Safety Instructions & Warnings

• The power adapter must with overvoltage and surge voltage protection; otherwise, it may easily damage the circuit board. Damage caused by a substandard power supply will not be covered under warranty.
• 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.
• Ensure your fingers do not touch the solder pads when inserting the battery into the battery holder, as this could cause a short circuit. This is extremely important!!!
• Make sure to insert the battery before turning on the UPS.
• Make sure to insert the battery before connecting the external charger to charge it.
• Please watch Main Video and Tutorial Video regarding 18650 batteries at: https://www.staysafebattery.com/en/
• Battery Recommend for Geekworm UPS board, please refer to: File:NCR18650B.pdf

Overview

The X12-A1 V1.0 is a stackable battery rack designed to 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 has an independent ultra-low resistance resettable fuse to effectively prevent over-discharge risks; the four parallel XH2.54 connectors support convenient connection and multi-stand stacking, allowing for flexible increases in total power capacity as needed.

Features

• Parallel Capacity Expansion: Can accommodate four 18650 batteries connected in parallel, directly increasing power supply capacity.

• Independent Protection: Each battery is equipped with an ultra-low internal resistance resettable fuse to prevent over-discharge.

• Plug and Play: Provides four XH2.54 connectors, compatible with specified UPS HATs, requiring no modifications.

• 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

Ports & Connectors	XH2.54 2Pin parallel interface x 4 4-cell 18650 battery socket x1
PCB Size	93.9mm x 77.1mm

Packing List

• X12-A1 18650 battery holder (4-cell parallel) x1

• 2-pin 2.54mm pitch male-to-male cable AWG18 30cm x2

• 2-pin 2.54mm pitch male-to-male cable AWG 10cm x1

• M2.5x22+6mm x4

• M2.5x5mm x4

• M2.5mm nut x4

• X12-A3 Acrylic Plate x1

• M2.5x6+3mm x8

• M2.5x5mm x4

User Manual

• X12-A1 Hardware Guide: X12-A1 Hardware

FAQ

Q1: Question 1

A: Place the answer here.