["Features:\r\nStandard dimension of HAT, and it's for all of the expansion board\r\nCascading design saves space while powering and expansion boards without affecting GPIO expansion\r\nSupport up to 2A quick-charge technology, can rapidly charge full the battery\r\nCan be charged and supplied power to at the same time\r\nWith 4 LED power indicator\r\nProvides an example code to beginner to demonstrate how to demonstrate battery capacity displays the current battery level in the current program, it can detect the current battery, voltage etc.\r\nRemovable battery, user can choose a more larger capacity lithium battery(NOTE: voltage must be 3.7V)\r\nWith safety for protection circuit to prevent overcharge and over discharge\r\nRetains the GPIO interface, you still can use all kinds of expansion board\r\nApplicatoin scene 1: You can program to control automatic backup of data at low power and safe shutdown.\r\nApplicatoin scene 2: Remind users to charge at low battery levels. etc.)\r\n\r\nNotice: Don'for t connect the micro USB to rasberrry pi; please connect the micro USB to UPS HAT board\r\n\r\nSpecifications:\r\nMaximum Output: 5V/2A\r\nMaximum Input: 5V/2A\r\nBattery Voltage: 3.7V\r\nBattery Capacity: 2500mAh\r\nMax. Charger Current: 2A\r\nMax. Output Current: 2A\r\nBoard Size: 6.5x5.5cm/2.56x2.17\"\r\nBattery Size: 6x4cm/2.36x1.57\"\r\nQuantity: 1 Set\r\nNote:\r\nPlease allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid\r\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\n\r\nPackage Contents:\r\n1 x Raspi UPS HAT Board\r\n1 x Li-ion Battery(2500mAh)"]