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PowerMon-5S - 500A Bluetooth LE Advanced Battery Monitor / DC Power Meter with data logging

22 reviews
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We developed the PowerMon-5S device because we wanted an affordable, high-tech solution that people can use to monitor electrical systems. PowerMon-5S can be used in RVs, campers, boats, solar systems, off-grid systems, or really anywhere you have a battery that you want to monitor. 

PowerMon-5S is a Bluetooth Low Energy device that measures voltage up to 72V, current up to 500A using an integrated shunt an. . .
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We developed the PowerMon-5S device because we wanted an affordable, high-tech solution that people can use to monitor electrical systems. PowerMon-5S can be used in RVs, campers, boats, solar systems, off-grid systems, or really anywhere you have a battery that you want to monitor. 

PowerMon-5S is a Bluetooth Low Energy device that measures voltage up to 72V, current up to 500A using an integrated shunt and temperature. It then calculates power (W), energy (Wh), charge (Ah), battery state-of-charge (SoC %), and estimated time left on the battery. PowerMon-5S keeps track of various statistics: minimum and maximum voltage, current, temperature, battery SoC, the total charged Ah, total discharged Ah, and much more. 

It doesn't stop here! PowerMon-5S can drive an external relay (or SSR - Solid State Relay). You can use PowerMon-5S as a low voltage disconnect, high voltage disconnect, over-current disconnect, temperature controller, as a timer device, as a remote ON/OFF switch, or for automatic generator control. 

A very important feature of PowerMon-5S is that it logs the data for up to 3 years in internal memory (as opposed to other similar products on the market). This means that you don't need to have a mobile device permanently connected to the battery monitor. Whenever you connect to PowerMon-5S, the mobile app will download the data logs from the device. 

Using the PowerMon app or the newer PowerMonX app you can view the measured data in real-time, the statistics, download the log data and visualize it as a chart, configure the device or even update the firmware in the device when new versions become available. 

The small form factor and ease of installation make PowerMon-5S ideal for quickly adding smarts to any existing electrical system. Bluetooth frees you from the need to wire your RV, camper, or boat.

Remotely monitoring DC circuit parameters has never been easier!

PowerMon-5S - User Manual

PowerMonX App Cheat-Sheet


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Customer Reviews
4.5 Based on 22 Reviews
5 ★
77% 
17
4 ★
14% 
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3 ★
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2 ★
5% 
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Filter Reviews:
    SS
    05/16/2022
    Scott S.
    United States
    I recommend this product

    Extremely Happy

    I am very pleased with both the PowerMon-5S and Thornwave’s customer service. The unit works just as described and does everything I had been looking for. It provides detailed information on the state of my battery system and records that information even when I’m not present so I can see how it was doing over extended periods of time. Thornwave’s customer support was very responsive to the questions I had prior to purchase and provided accurate and helpful information. I highly recommend this unit for anyone with a battery system they need to monitor

    MO
    05/14/2022
    Matthew O.
    Canada Canada
    I recommend this product

    super design and function

    The install was very easy, and figuring out the function equally so. Neat design, really nice user interface on the app. One of the only shunts that has onboard data logging, so doesn't require purchase of a separate display unit for that function. Looks well-made, nice circuit board.

    JB
    02/19/2022
    John B.
    United States United States
    I recommend this product

    Bad Idea..Green Grd Connection Thing

    My new trailer was very delayed due to Covid so only now installing the PowerMon-5S. I have to say the ground green plastic connection thing has gotta be straight from China. Impossible to fit the provided black ground wire into the batt negative connection on the "Green Thingy". Had to use the smaller gauge blue wire as it's the only way to make it work with the "Green Thingy". Hoping the rest of the install works as per the guides. This "Green Thingy" is not mentioned in any of the guides. Guides show a nice, normal, blade connection point. Taking a star for the "Green Thingy".

    AH
    02/13/2022
    Andy H.
    United States United States
    I recommend this product

    Excellent Product

    I had to get a replacement as the first unit sent did not broadcast a Bluetooth signal. The replacement was shipped immediately, with a prepaid return label. The second unit works flawlessly. I do wish the Bluetooth signal was a little stronger as I have mounted the monitor in an RV bay and there isa lot of surrounding metal. I do get a useable signal right above the battery bay.

    JP
    01/27/2022
    Jason P.
    United States United States
    I recommend this product

    A Swiss Army Knife for Batteries!

    This product is incredible. It does pretty much everything imaginable when it comes to monitoring power consumption and battery health. I couldn't ask for more. The bluetooth range is great as well! Only improvement I can offer is cover up that PCB board with a little decorative and protective cover!

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