This is to fit our removable battery balance bikes. This size is fitted to our 16" model. It can be changed in around 20seconds. Charging port built into the battery. Buy extra batteries to ride for longer!
 
This larger battery will also fit the Revvi 12" model and double its run time. 
 
Please note: This will only fit your bike if you have purchased a bike with the Removable battery system. It can not be fitted to bikes with the built in battery!