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Thornwave Labs Inc.

PowerMon - Bluetooth Battery Monitor / DC Power Meter with logging

62 reviews
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PowerMon is a Bluetooth hi-tech device that can be used to monitor the state of charge of any battery and power flow in any electrical system. The data logging function allows it to store measurements for up to 3 years. The storage is on board the device not in the mobile app. 

On top of the monitoring functions, PowerMon can act as a power controller, allowing for low voltage disconnect, high voltage disconnect, over-current disconnect, battery isolator, remote ON/OFF switch, timer swi. . .
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PowerMon is a Bluetooth hi-tech device that can be used to monitor the state of charge of any battery and power flow in any electrical system. The data logging function allows it to store measurements for up to 3 years. The storage is on board the device not in the mobile app. 

On top of the monitoring functions, PowerMon can act as a power controller, allowing for low voltage disconnect, high voltage disconnect, over-current disconnect, battery isolator, remote ON/OFF switch, timer switch, generator control, and solar system automation. With Bluetooth LE (Smart) connectivity there is no need for drilling and extra wiring in existing or new applications (RVs, boats, solar systems). Small form factor and ease of installation make PowerMon ideal for quickly adding smarts to any existing electrical system. Remotely monitoring DC circuit parameters has never been easier!

Voltage, current, power, energy, battery state of charge, and temperature are all measured and displayed in real-time using Thornwave Labs’ mobile application, PowerMon, which is offered for free on Google Play and Apple App Store. The device supports multiple configurations and measurement ranges that can be set up using the app, allowing it to accommodate a variety of circuits. Control of a mechanical or solid-state relay allows it to be used for low voltage disconnect, high voltage disconnect, over-current disconnect, a battery isolator for multiple battery systems, remote power control, or as timer. This wireless, multi-function tool is truly a Swiss-army knife for DC electrical systems.

The device measures two voltages up to 75V with better than 0.5% accuracy. It contains an internal shunt making it able to measure current up to 60A without using any external parts.  The current measurement can be calibrated to an accuracy better than 1%. If higher current has to be measured (as high as 10,000A), an external shunt can be added. Current shunts are readily available and can be customized for the specific current measurement range required. PowerMon supports a wide range of current shunts.


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Customer Reviews
4.8 Based on 62 Reviews
5 ★
89% 
55
4 ★
6% 
4
3 ★
2% 
1
2 ★
0% 
0
1 ★
3% 
2
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Filter Reviews:
    RG
    12/04/2021
    Randy G.
    United States United States
    I recommend this product

    Poor instructions for installation

    Have not yet figured out how to install it. Was hoping there were better instructions, or even a YouTube video to guide me. I’m not familiar with wiring diagrams, but if I had clear instructions I can install it. I assume it will work great, but for now, trailer is in winter storage and I have to figure out how to get help.

    PM
    12/04/2021
    Peter M.
    United States United States
    I recommend this product

    Incredible!

    This device is going to help me maximize the longevity of my expensive LiFePO4 battery by giving me the information to know how much I have charged and discharged the battery. The wiring was easy, and the app provides the information I need. if I can make one suggestion, it would be to give more options to the user besides 100% in the battery synchronization function of the app given that users will often be limiting charging to lower percentages since that extends the life of the battery.

    A
    12/04/2021
    Anonymous
    United States United States
    I recommend this product

    So far…so good

    Only set up one battery bank on boat and so far so good. 2d battery in Spring. Blue tooth range is 60 ft- very good.

    A
    11/04/2021
    Anonymous
    United States United States
    I recommend this product

    Bluetooth Battery Monitor

    Great item, worked like a charm!

    A
    11/04/2021
    Anonymous
    United States United States
    I recommend this product

    Powermon

    Excellent product. Very versatile. Good bluetooth range. Automatically resets when battery reaches 100%.

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