Mini Uninterruptible Power Supply module, Supports charging And Power output at the same time, 5V 2.5A Output

SKU: 24760
Part Number: UPS Module Mini
Brand: Waveshare


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Mini Uninterruptible Power Supply module, Supports charging And Power output at the same time, 5V 2.5A Output
Mini Uninterruptible Power Supply Module

Supports Charging and Power Output At the Same Time, Stable 5V Output

Features at a glance
  • Mini UPS expansion board for easy soldering or integration into mobile robots and industrial control equipments
  • I2C bus communication, monitoring the batteries voltage, current, power, and remaining capacity in real time
  • Onboard multiple function pins, provides two charging and discharging methods via pads and pin headers
  • Multiple battery protection circuits: over charge/discharge protection, over current protection, short circuit protection, and reverse protection, along with the equalizing charge feature, more safe and stable
  • Onboard 5V regulator, up to 2.5A continuous output current
  • Onboard warning indicators, easy to check if the battery is connected correctly and charging status
  • Comes with online development resources and manual
Output voltage 5V 2.5A
Charger Support 5V 3A
Control bus I2C
Battery support 10440 Lithium battery × 3 (in parallel, NOT included)
Dimensions 61 × 38mm

Uninterruptible Power

It is able to charge the batteries and provide power output at the same time from external power supply
Automatically switch over to batteries output if external power supply is unavailable, keeps the system running without any trouble

* for reference only, the CM4, CM4 base board, TF card and 10440 batteries are NOT included
Real time monitoring

monitoring the batteries voltage, current, power, and remaining capacity via I2C interface

for reference only, please refer to the part list for detailed package content

Safe and stable circuit design

Protection circuits for over charge/discharge, over current, short circuit, and reverse
along with the equalizing charge feature, more safe and stable

What's On Board
  1. ETA1188
    5V voltage regulator
  2. ETA6953
    Battery charge/discharge chip
  3. INA219
    Voltage/current monitoring chip
  4. S8261
    Battery protection chip
  5. RT9193
    3.3V voltage regulator
  6. AO4402
    Battery protection MOS tube
  7. UPS ON/OFF switch
    Control UPS output
  1. Boot button
    Batteries activation
  2. Power indicator
    Lights up when the UPS switch is turned on
  3. Charge indicator
    Light up: when batteries are charging
    Blinking: when batteries are abnormal or no battery connected
    Light off: when charging completed or not charging
  4. Reverse warning indicators
    will light up if the related battery is reversely connected
  5. Charging pad
    5V 3A
  6. UPS output pad
    5V 2.5A
  7. Multi-functional pin headers

Pinout definition
IN Power input (5V 3A)
OUT UPS output (5V 2.5A)
GND ground
UPS OFF turn off UPS power output when connected to PWR pin
BOOT Batteries activation (pull low for 500ms and then pull high)
CHARGE Charge indication (low level indicates charging)
SCL I2C clock
SDA I2C data
PWR UPS ON/OFF (In the case of the onboard UPS switch being off, the UPS power output will be turned off when PWR is connected to the UPS OFF pin, and will be turned on when connected to the GND pin)
Note: When using pin headers for charging and discharging, it is recommended to connect all input and output pins for 2.5A output current to reduce pin stress

product show

Outline dimensions
Resources & Services

* Resources for different product may vary, please check the wiki page to confirm the actually provided resources.


  • Li-ion and Li-po batteries are quite unstable. They may cause fire, personal injury, or property damage, if they're not properly recharged or used.
  • Do not reversely connect the polarities when recharging or discharging the battery. Do not use inferior charger/charging panel to recharge the battery.
  • Do not mix use old batteries with new ones, avoid using batteries of different brands.
  • When buying Lithium battery, should always make sure the battery specification is compatible with the expansion board. Choose batteries from formal manufacturer, and ensure the batteries will work stably and safely by aging test.
  • Lithium batteries have limited cycle life, they will also deteriorate as time goes by. Should be replaced with new ones when the batteries reaching their max cycle life, or working over two years, whichever comes first.
  • Should be placed carefully and properly, keep it away from inflammables and explosives articles, away from children, avoid any safety accident caused by careless storage.

Weight: 0.023 kg

Quick Overview

UPS Module Mini x1