1.Onboard SW6106 chip, supports bi-directional quick charge, supports multi quick charge protocols such as PD / QC / FCP / PE / SFCP2. Lithium battery protection circuits, offers reverse protection, over charge protection, and short circuit3.Onboard indicators: fast charging, power capacity4.PH 2.0 battery connector, for connecting the 3.7 V 3000mA high capacity Li-polymer batteryOutput voltage: 5 VCharging voltage: 5 VApplicable battery: 3.7 V Li-polymer battery (4.2 V when fully charged)Dimension: 65.0mm x 56.5mmMounting hole: 3.0mmMaterial:Metal + PCBColour:As shownPackage Contents:1 * Li-polymer Battery HAT1 * 3.7V 3000mAh Li-polymer battery1 * RPi screws pack (2pcs)Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.