Just in case you are interested i have managed to get victron charger running wifi via the ve direct port using Elfin-ew10 rs232 to wifi t if you are not wanting to use a raspberry pi this is a simple and straight forward option to monitor your charger or any ve direct device via wifi. power consumptions is about 200ma and power output about 700mw the distance can be increased by using a high gain antenna, you have to setup a virtual port on your pc and have the baud rate set to 19200 the over all cost would be around 25us dollars.if there is a virtual port app for your phone you should in theory be able to monitor it on your phone