12V Lithium Battery Monitor

Close-up of a TECHWORLD battery monitor displaying voltage, amperage, and time data on a digital screen, mounted on a textured surface with leather and dark material visible.
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  • iTECHBM500 (NEW 2024 Model) - 500Amp Battery Monitor with Shunt - iTechworld

    iTECHBM500
    Battery Monitor with Shunt
    500A

    4.8
    Rated 4.8 out of 5 stars
    540 Reviews
    • Compatible with all battery types
    • 500A current shunt
    $149
    $149
    $199
  • iTechworld Litium Battery Volt Meter

    iTechworld
    Battery Voltmeter
    Lithium Batteries

    4.8
    Rated 4.8 out of 5 stars
    241 Reviews
    $49
    $49
    $49

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12V Lithium Battery Monitor

Smarter Power Management On the Go With Itechworld Battery Monitors

It doesn't matter if you’re running a caravan fridge, marine electronics, or an off-grid solar array, getting real-time updates about how your battery is performing is always a good idea. The iTECHBM500 Battery Monitor with Shunt gives you instant, precise feedback on your system, helping you plan, protect, and power your next trip with confidence.

What Makes iTechworld Battery Monitors Different?

  • Instant Insights: The iTECHBM500 displays live battery voltage, charge/discharge current, and state of charge at a glance. Always know exactly how much capacity you have left to work with.

  • Heavy-Duty Accuracy: A calibrated 500A shunt ensures accurate readings even under high loads from inverters, fridges, or winches, making it an excellent lithium battery monitor solution.

  • Compact & Easy to Install: Thanks to a slim profile and simple panel-mount design, this battery voltage monitor saves space in crowded dashboards or switchboards.

  • Wide Compatibility: Works as a car battery monitor or with 12V and 24V banks, including LiFePO4, AGM, Gel, and flooded cells. This makes it a great bet for those looking for a reliable 12V lithium battery monitor.

  • Smart Alarms & Automation: Set a threshold voltage via the monitor that then emits an audible 'low-voltage' alarm if your system drops below this set threshold.

  • Clear, Readable Display: A high-contrast LCD with adjustable backlight gives you crisp data day or night, even in the bright Aussie sunlight.

  • Designed for Real Users: Built and tested for Australia’s demanding conditions, with local support who understands the right way to power your next adventure. 

For even more flexibility, pair your lithium battery monitor 12V with our rugged battery boxes. Together, they give you portable power with real-time monitoring, perfect for caravans, camping, and 4WD adventures.

iTechworld’s battery monitors don’t just show numbers—they give you actionable data to get more out of your system and keep your adventures running smoothly.

FAQs

Are battery monitors worth it?

Absolutely. A quality 12V battery monitor gives you real-time visibility of your battery health and usage, helping prevent over-discharge, prolong battery life, and optimise power management.

Does a battery monitor drain the battery?

No. A quality unit like the iTECHBM500 consumes only a tiny fraction of power, far less than even a small LED light, and the benefits of accurate monitoring far outweigh this negligible draw.

What is the difference between a battery monitor and a shunt?

A shunt is the component that measures current flow in and out of the battery. The lithium battery monitor 12V uses that data, along with voltage and software calculations, to display key information like remaining capacity, real-time load, and state of charge. The shunt is part of the system, but the monitor is the complete tool you interact with.