Hello Just starting a new consolidated and comprehensive forum post about Estima Hybrid OBD monitoring apps and in particular in relation to monitoring the hybrid Battery Will need a bluetooth OBD adapter. There is information about these all over the internet and YouTube, a good one is https://hybridassistant.blogspot.com/p/obd.html   Will cover: Hybrid Assistant https://hybridassistant.blogspot.com/p/about.html (Android only) DrPrius app although mainly for Priu