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

27 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 32V, 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 32V, 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
4.6 Based on 25 Reviews
5 ★
76% 
19
4 ★
16% 
4
3 ★
0% 
0
2 ★
4% 
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96reviewers would recommend this product Write a Review

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Filter Reviews:
    A
    08/30/2022
    Anonymous
    United States
    I recommend this product

    Great power monitor

    I read alot of reviews and found this to be the best bluetooth power monitor. I have zero complaints about this item so far. The app is very easy to use.

    MS
    06/14/2022
    Mike S.
    United States United States
    I recommend this product

    Won't Handle Surges

    Works well, but if you disconnect your battery cable without disconnecting the wire to the green terminal, you may destroy the unit like I did. I wish this unit had better surge protection. The spade terminals have been replaced with two very small Phoenix type terminals designed for very small wire. The supplied wires are useless and will not fit in the green terminals. Connect the green terminal directly to negative through a 1 amp fuse. This will allow you to power down the unit before disconnecting your battery and will prevent the PowerMon unit from being destroyed.

    JB
    06/14/2022
    John B.
    United States United States
    I recommend this product

    Hot shunt

    Very pleased with the PowerMon-5S. Does a great job monitoring my 4- BB 100ah LiFePO4 batteries. One concern. The shunt is located in a separate under bench compartment that doesnt have a lot of ventilation. It not in the same compartment with the batteries which is better ventilated. When weather is hot outside (90's) the shunt temp gets as high as 121°F while the power center is charging at 50amps. Can the shunt handle that temp? I'm considering adding a vent grill so the shunt compartment gets more cooler air.

    SS
    05/16/2022
    Scott S.
    United States 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.

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