Renogy RBM500 500A Battery Monitor with Shunt

Short Product Summary

The Renogy RBM500 500A Battery Monitor gives you a clear, accurate readout of your 12V battery system on a backlit LCD — voltage, current, consumed power and remaining capacity at a glance. Supplied with its own 500A shunt, it's a simple, wired way to always know exactly how much power you have left.

Why This Product

Guessing your battery level by voltage leads to flat batteries and over-discharge. The RBM500 measures the real current flowing in and out through its shunt, then shows true state-of-charge and consumed energy — with programmable alarms to warn you before you run too low.

Key Features

• Monitors voltage, current, consumed power & battery capacity – the full picture at a glance.
• 500A shunt included – accurate measurement for typical 12V house systems.
• Backlit LCD – green backlight with adjustable brightness.
• Programmable high/low alarms – warns you before voltage or current goes out of range.
• ±1% accuracy – on voltage, current and capacity.
• Wide voltage range – 10–120V, up to 500A.

Ideal For

• Caravan, trailer & camper 12V systems wanting a simple wired display
• Off-grid and overlanding setups that need accurate battery data
• Anyone who prefers a fixed panel readout over a phone app

Local Support from 4Matt Campers

4Matt Campers serves the Western Cape and Cape Town, and ships across South Africa — helping clients build reliable 12V and off-grid power systems. We'll help you wire and set up your battery monitoring correctly.

Technical Specifications

• Brand: Renogy
• Model: RBM500-G3-SA
• Max Current: up to 500 A (500A shunt included)
• Voltage Range: 10–120 V
• Display: LCD with adjustable green backlight
• Monitors: Voltage, current, consumed power, battery capacity (& degradation)
• Alarms: Programmable high/low voltage & current
• Accuracy: ±1%
• Cabling: 6 m shielded wire · 1 m B+ wire

What's Included

• 1 × RBM500 monitor (LCD)
• 1 × 500A shunt
• 6 m shielded cable & B+ wire
• User manual

Optional Fitment / Upgrade Notes

For accurate readings, it's worth confirming:

• The shunt is installed on the battery negative, with all loads/charge sources downstream of it
• Your battery's capacity is set for correct state-of-charge
• A tidy panel location for the LCD display

Complete Your Setup

Browse the full Renogy range and 12V electrical & power gear. Pair it with a lithium battery and the right charging for a complete 12V system.

FAQ

Does it come with the shunt?
Yes — the 500A shunt is included, along with the shielded cable and B+ wire.

App or panel display?
The RBM500 is a wired LCD panel monitor — ideal if you prefer a fixed display. For phone monitoring, see the Bluetooth CORE 300A shunt.

What can it tell me?
Live voltage and current, the power you've consumed, and your remaining battery capacity — with alarms to warn you before you run low.