Battery Monitors

A battery monitor counts the energy going in and out of your battery. It shows the state of charge, so you do not have to guess from voltage.

• SmartShunt: no screen. You read it on your phone over Bluetooth, or on a GX device.
• BMV-712: a built-in display plus Bluetooth.

Choose a shunt rating above the highest current your system can draw. Larger ratings suit bigger systems.