NOTE: If you are interested in Wireless Sensor Networks (WSN), M2M and the Internet of Things (IoT) projects check our new open source sensor platform: Waspmote which counts with more than 60 sensors available to use and a low consumption mode of just 0.07uA to ensure years of battery life. Know more at:
A really cool rechargeable Lithium Ion coin cell battery. The battery is rated for 3.6V @ 110mAh - a great way to run a small embedded project for hours. This battery is a standard CR2450 battery size.