Raspberry Pi 4 X703 18650 UPS Shield with Auto Power On Function

Update History:

1. In September 2023, the X703 version update from V1.2 to V1.3.
2. In July 8th 2023, the X703 V1.2 UPS has do a small update, "AON" Pin has been updated to "PON" Pin, also the pcb components position will be a little difference.

Note

• NOT supports software safe shutdown.
• Please use the type-c of the X703 to charge instead of the Raspberry Pi 4.
• Please use high quality power supply, the low quality power supply will generate surge Voltage, which will damage the board chip. We recommend Panasonic brand NCR18650BD 18650 lithium battery.
• If 【CHG】 pin is OPEN, battery charging will be started after powering on(short press the on-board button to turn on) and stopped after powering off(press and hold for 2-3 seconds to turn off). If 【CHG】 pin is SHORT, the battery will be automatically charged once your power adapter connected. The purpose of adding the 【CHG】 jumper is to extend the life cycle of the battery by reducing the number of recharges.
• Be sure to power off & remove the 18650 battery then wait for 2 seconds when toggle charging mode.
• You must read these safety instructions and warnings before charging your batteries. Refer to WiKi: 

User Manual: https://geekwormf.shop/X703

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Overview
The X703 is a new design UPS board which is specially designed for Raspberry Pi 4 Model B only. It provides an advanced uninterruptible power supply and power. The X703 adds 4 test pins to achieve powered between X703 and Raspberry Pi 4 without additional cable.

Key Features

• Smart Uninterruptible Power Supply (UPS)
• Supports 3A via Type-C socket fast charging
• Add 4 test pins to achieve powered between X703 and Raspberry Pi 4 without additional cable.
• Only work with single 18650 Lithium Ion battery
• Integrated battery protection circuit
• Integrated over current protection and over voltage protection
• On-board 4 green LEDs indicate battery charging and discharging levels of 25%, 50% , 75% and 100%
• On-board red LED show the status of battery charging or fully charged
• On-board push button to control power on /off (Press-ON, Hold the button pressed at least 2s -OFF)
• Allows power input via Type-C socket or XH2.54 connector
• On-board 2-Pin PH2.0 connector allows to connect external power switch
• DON'T supports software safe shutdown.

Specifications

• Power supply via Type-C socket: 5Vdc ±5%, ≥3A;
• UPS output: 5.1V ±5% Max 3A
• UPS charging current: 1A
• Terminal Battery Voltage: 4.2V
• Recharge Threshold: 4.1V

Packing List

• 1 x X703 V1.2 UPS Shield
• 1 x Jumper link Pitch 2.54mm
• 6 x M2.5 *4mm Screws
• 2 x M2.5 *5+3mm Spacers
• 2 x M2.5 *5mm Spacers