SparkFun Adjustable LiPo Charger _maker the maximum output power will

the maximum output power will be 2 x 3 Watts)

A bit of soldering is required to attach the matrix onto the backpack but its very easy to do and only takes about 5 minutes

The board features bi-directional motor control using a TB6612 dual H-bridge

If you're looking for more compact solution

CodeBug has six electrical legs that can be used with external electronic components such as LEDs and switches

SparkFun Adjustable LiPo Charger _maker the maximum output power willThe SparkFun Adjustable LiPo Charger is a single cell lithium polymer (LiPo) and lithium ion battery charger. Because its adjustable, this charger will be able to safely charge most of our single cell batteries with ease. With its onboard charge rate selector, you will be able to set the maximum amount of current to charge your battery from 15mA to 500mA. Once the board is configured for the battery, you can connect power from either a micro USB cable