Product description
The SparkFun Portability Shield adds all the user interface bits needed to take a SparkFun development board into the field. A LiPo battery connector, charger, fuel gauge, and an on/off switch address your power needs. A friction-fit microSD connector allows for data logging. The 1.3in. OLED and a five-way navigation switch provide an excellent user interface.
The Portability Shield has been designed to be usable with any compatible main board, with the RTK Postcard being the first.
More information is available on the website of SparkFun.