1、Lithium battery expansion board for Raspberry Pi, onboard SW6106 mobile power chip, can provide stable 5V voltage output, and supports two‑way fast charging 2、This product has longer battery life and stronger load capacity, and its body size is more compatible with for Raspberry Pi B/A+/B+/2B/3B/3B+/4B 3、Support multiple fast charging protocols such as PD/QC/FCP/PE/SFCP 4、Onboard lithium battery protection circuit, with anti‑reverse connection, anti‑overcharge and short‑circuit protection functions 5、With onboard fast charge and battery indicator, it is convenient to check the working status of the board and battery 6、Onboard PH 0 lithium battery interface, which can be connected to the matching 7V 3000mA large‑capacity lithium battery (MSDS certification) 1 x Accessory Package1 x Lithium Battery1 x For Raspberry Pi Lithium Battery Expansion Board  Item Type: Lithium Battery Expansion Board for Raspberry PiMaterial: PCBBattery: 3.7V 3000mAh lithium battery(shipped with battery)Output Voltage: 5VCharging Voltage: 5VApplicable Battery: 3.7V lithium battery (full charge is 4.2V)Product Size: Approx. 65 x 56.5mm / 2.6 x 2.2inThrough Hole Diameter: Approx. 3mm / 0.1inHow to Use: 1. Power supplyConnect to for Raspberry Pi to Use: Step1: Connect the matching lithium battery to the 2.0mm battery socketStep2: Click the Standby button to output 5VStep3: Insert the GPIO port of the for Raspberry Pi to power the for Raspberry PiUse for Other Equipment: Step1: Connect The Supporting Lithium Battery To The 2.0mm battery socketStep2: Click the Standby button to output 5VStep3: Connect USB cable to other equipment through USB Type-A interface; or connect 5V, GND to other equipment through jump wire. 2. ChargingOrdinary Charging: Step1: Connect the matching lithium battery to the 2.0mm battery socket,Step2: Connect the charger to Micro USB or USB Type-C through the USB cable to achieve normal chargingFast Charging: Step1: Connect the matching lithium battery to the 2.0mm battery socketStep2: Connect the charger that supports fast charging to the USB Type-C interface through the USB cableStep3: If the fast charge indicator is on, it enters the fast charge mode, otherwise your charger does not support the fast charge mode