Changes

* On-board 4 green LEDs indicate battery charging and discharging levels of 25%, 50% , 75% and 100%

* Intelligent and safe power management

* Equipped with momentary button for easy power control

* Advanced system power-path management avoids batteries frequent charging and discharging

* Advanced system power-path management allows 3A fast charging and powering Raspberry Pi at the same time

* Integrated Hardware DS1307 Real Time Clock (RTC) with Battery Back-Up

* Keeps track of the time while the Raspberry Pi is switched off

* Allows the Raspberry Pi to retrieve the current date and time when it is switched back on

* Uses the 18650 battery to maintain the date and time - no additional battery required

* Powers the Raspberry Pi via the 40-pin header - no additional cabling required

* On-board DC power jack (5.5*2.5mm) and Type-C socket convenient for power input

* On-board XH2.54 power output connector allows to power other devices

* Reserves the 40-pin header that can be stacked with other Raspberry Pi accessory boards

<span style="color:red;font-weight:bold">X728-A1 Optional Raspberry Pi cooling fan</span>

* Completely solve the overheating problem of your Raspberry Pi

* On-board XH2.54 power output connectors allow to power other devices

* Reserves the 40-pin header that can be stacked with other Raspberry Pi accessory boards

<span style="color:red;font-weight:bold">X728-A2 Optional 18650 2-Cell battery holder</span>

* Stackable 18650 two cells lithium Ion holder