The TIDA-00668 is a booster pack that provides a wireless charger and an entire battery managment solution to power any low power TI Launchpad. This design is a highly integrated power management solution that is well-suited for ultra-low power applications.
The primary method of storage is an LIR2032 Lithium-Ion rechargable coin cell. There is a connector for an external battery if desired.
          Features
          
          - Low cost PCB coil with on board wireless receiver
 - Coin cell storage to 50mA
 - 31uA quiescent current
 - 3.3Vdc buck from the TPS62736 to power the Launchpad
 - 5V boost to power support circuitry
 - Stackable design allows for creating a complete solution