Li-polymer Battery HAT

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Li-polymer Battery HAT
Li-polymer Battery HAT

Li-polymer Battery HAT for Raspberry Pi, SW6106 Power Bank Solution, with Embedded Protection Circuits





The Li-polymer Battery HAT integrates SW6106 power bank management chip, allows providing 5V regulated power supply to your Raspberry Pi or other 5V devices, from a high capacity Li-polymer battery. It will charge the battery as well, supports bi-directional quick charge.


  • Onboard SW6106 chip, supports bi-directional quick charge, supports multi quick charge protocols like PD/QC/FCP/PE/SFCP.
  • Lithium battery protection circuitry, provides reverse protection, overcharge protection, and short circuit protection.
  • Onboard indicators: quick charge, power capacity.
  • PH 2.0 battery connector, for connecting the 3.7V 3000mA high capacity Li-polymer battery (MSDS certified).


  • Output voltage: 5V
  • Charge voltage: 5V
  • Applicable batteries: Battery voltage: 3.7V lithium battery, 4.2V when fully charged, 3.0V after discharge (matching lithium battery pack with protection board, discharge cut-off voltage 3.0V, which can effectively prevent over-discharge).
  • SW6106 discharge cut-off voltage: 2.95V (the battery voltage is lower than this value, the power management chip will forcibly stop the output).
  • Maximum load current: about 1.8A (with the actual measured data of the battery, the power management chip can actually output up to 4A current).
  • Sleep cut-off current: 40mA (load operating current is lower than this value, the power management chip will enter the sleep state and stop output).
  • Power supply time: more than 5 hours (tested under zero load on Raspberry Pi 3B, the actual power supply time is related to the battery and load).
  • Product size: 65.05mm × 56.55mm
  • Hole diameter: 3.0mm

Interfaces and Indicators

  • Interfaces
Interface Description
Micro USB Charge
USB Type-A Power output
USB Type_C Suports chrage, quick charge and power output
  • There are five battery indicators.
Capacity LED1 LED2 LED3 LED4 LED5
80%~100% ON ON ON ON ON
60%~80% ON ON ON ON Blink
40%~60% ON ON ON Blink OFF
20%~40% ON ON Blink OFF OFF
5%~20% ON Blink OFF OFF OFF
1%~5% Blink OFF OFF OFF PFF
  • Quick start indicator
When you connect the power adapter to the Type_C interface for quick charging, the Quick Charge indicator will turn on. If it keeps on, maybe your adapter doesn't support a quick charge.
  • Standby button
Single-press it to output 5V, and double-press it to set it to sleep mode.


  • 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.

How to use


Connect it to Raspberry Pi
  • Step1: Insert the Li-polymer battery into a 2.0mm battery socket.
  • Step2: Single-press Standby button, and set it to discharge mode.
  • Step3: Attach it to Raspberry Pi for powering.
For other devices
  • Step1: Insert the Li-polymer battery into a 2.0mm battery socket.
  • Step2: Single-press Standby button, and set it to discharge mode.
  • Step3: Connect it to other devices by USB cable or wires.


How to charge
  • Step1: Insert the Li-polymer battery into a 2.0mm battery socket.
  • Step2: Connect the power adapter to a micro USB or Type-C interface by USB cable.
Quick charge
  • Step1: Insert the Li-polymer battery into a 2.0mm battery socket.
  • Step2: Connect power adapter (support quick charge) to type_C interface by USB cable.
  • Step3: Check if the Quick Charge indicator turns on.


  • Module enters sleep mode when the working current is less than 40mA and stops discharge.
  • The Quick charge mode only works when you connect a power adapter that supports quick charge.
  • To power Raspberry Pi, you can attach it to the GPIO or connect the Type_A interface to Pi by USB cable.
  • This module cannot work as UPS. It will turn off Raspberry Pi when low-voltage.
  • The battery is about 4.2v when fully charged. Note that you should discharge the battery to 3.0, otherwise it is damaged.
  • Please disconnect any devices when you replace the battery.
  • DO NOT change the battery provided with another battery without a protective panel.
  • Please check the poles of the battery interface carefully when you connect batteries.



Li-polymer battery hat.png


The output identification protocol will be disconnected at the moment of charging or unplugging the power cord, so there will be a brief power failure that will cause the Raspberry Pi to restart, and it cannot be used as a UPS power supply.


Yes, use the USB Type-A port to power the Micro USB port of the Raspberry Pi.


You can check the chip's manual: the current is as high as 4A, and the efficiency is as high as 96%. In fact, due to battery limitations, the maximum output current can only reach about 1.8A.



If you require technical support, please go to the Support page and open a ticket.