SmartShunt 300A The SmartShunt is an all-in-one battery monitor, only without a display. Your phone acts as a display. The SmartShunt connects via Bluetooth to the VictronConnect app on your phone (or tablet). You can conveniently read out all monitored battery parameters, like state of charge, time to go, historical information, and much more. Alternatively, the SmartShunt can be connected and read by a GX device. Connection to the SmartShunt is made via a VE.Direct cable. The SmartShunt is a good alternative for a BMV battery monitor, especially for systems where battery monitoring is needed but less wiring and clutter are wanted. The SmartShunt is equipped with Bluetooth, a VE.Direct port and a connection that can be used for: monitoring a second battery, midpoint monitoring or a temperature sensor. Please contact your dealer for any returns, repairs or support issues related to this product.