6 Best Bluetooth RV Battery Monitors in 2026: A Practical RV Guide

The Victron SmartShunt 500A is the benchmark shunt monitor for RVs. It reports state of charge, time remaining, voltage, current, amp hours, charge cycles, deepest discharge, and voltage highs and lows in the VictronConnect app, and works from 6.5 to 70V.

What puts it above the BMV-712 ranked second is price and simplicity: it skips the wired display and does everything through the phone. Over the REDARC and LiTime units below, its advantage is VE.Smart Networking, which shares live battery data with Victron solar chargers so they charge more precisely. An aux input can monitor a second battery, a midpoint, or an optional temperature sensor.

The Victron BMV-712 is the SmartShunt's sibling with a built-in display. It shows state of charge, voltage, current, and energy or time remaining on a wall-mounted screen, adds Bluetooth for the VictronConnect app, and works from 6.5 to 70V DC.

In exchange, it adds a programmable relay that can control other devices, such as starting a generator at a low state of charge, a feature none of the cheaper picks below offer. Its extra input can measure battery temperature, a midpoint, or a second battery.

The REDARC 500A monitor stands out for Bluetooth range. It uses Bluetooth 5.1 with a stated range of up to 42 meters and reports state of charge, time remaining, and current flow in the RedVision app, which also ties into REDARC's own charging gear.

Against the LiTime below, it costs about $99 more, mainly for brand reputation in the overlanding world and the long range.

The LiTime 500A smart shunt offers Victron-style data for about $100. It shows charge and discharge current, voltage, power, and state of charge in an app, logs history such as discharge capacity, cycles, and voltage highs and lows, and works across 8 to 120V systems.

Compared with the REDARC above, it adds adjustable alarms for low capacity, temperature, over-voltage, under-voltage, and over-current, plus a status light that flashes on a fault.

The Renogy Battery Shunt 300 is built for the Renogy ecosystem. It records history and sends alerts through the DC Home app, supports remote monitoring through Renogy ONE, and includes a battery temperature sensor for lead-acid, LiFePO4, and lithium-ion batteries.

Its 300A rating is lower than the 500A LiTime above, which is why it ranks below it despite costing about $19 more. The included temperature sensor is a real plus over the ANCEL below, especially for lithium owners who camp in the cold.

The ANCEL BM1000 is the least expensive full shunt monitor here at about $90. It tracks state of charge, voltage, current, power, and remaining capacity on a phone, keeps up to 30 days of energy history, and works on 10 to 120V systems including LiFePO4, AGM, and lead-acid.

Its 400A shunt sits between the Renogy 300A above and the 500A units, and ANCEL sizes it for typical 100 to 300A peak loads.