The rechargeable battery for the mBot V1.1. This battery also can work older mBot version but there is no enclosure for the battery in mBot v1.1.

Battery life -In normal operations, this battery can last few hours depending on program and peripheral you are running on - we tested motor running around 5 hours continues without any wireless activities. Though it depends on temperature and other various sets in your code. 

The kit includes the case for the battery that will fit under the mBot.