Price For: Each Manufacturer: Adafruit Industries Product Category: Power Management IC Development Tools RoHS: Product: Add-On Boards Type: Power Supply Controllers Tool Is For Evaluation Of: - Input Voltage: 5 V Output Voltage: 3.7 V/4.2 V Brand: Adafruit Description/Function: Power boost shield with rechargeable power shield Dimensions: 69 mm x 53 mm x 2 mm;Output Current: 1 A Packaging: Bulk