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  1. #1
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    Default WIFI battery monitor

    Anybody know of a wifi battery monitor locally? Specifically not BT as these are easily available and i am looking for remote monitoring.
    Last edited by BruceHun; 2021/08/26 at 01:48 PM.
    Bruce Hunter
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  2. #2
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    Default Re: WIFI battery monitor

    This is intended for 220V switching + energy current voltage measuring

    Not sure if it would read accurately at low voltages, but it might just work

    https://eiferer.co.za/collections/so...=9167725428780
    Last edited by Dungbeetle; 2021/08/26 at 01:40 PM.
    Donít blame yourself over past mistakes. Itís like driving down the N1 while looking in the rear view mirror only.

    2000 Patrol GU 4.2D(onkey) "old-timer" chugging along towards 900 000 km.
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  4. #3
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    Default Re: WIFI battery monitor

    This is for AC only.
    Bruce Hunter
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  5. #4
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    Default Re: WIFI battery monitor

    I just know of the Bluetooth ones

    https://www.takealot.com/powervault-...E&gclsrc=aw.ds
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  6. #5
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    Default Re: WIFI battery monitor

    Quote Originally Posted by BruceHun View Post
    This is for AC only.
    Yip, might be lucky and it gives the voltage - rest no go
    Donít blame yourself over past mistakes. Itís like driving down the N1 while looking in the rear view mirror only.

    2000 Patrol GU 4.2D(onkey) "old-timer" chugging along towards 900 000 km.
    2014 Patrol GU 3.0CRD "teenager" in puberty - 131 000 km
    2007 Echo3 Trailer "the nest" with Braked Axle fitted >60 000 km
    2012 NP300 YD2.5 D/C 2x4 High Rider "platkar" - 125 000 km

  7. #6
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    Default Re: WIFI battery monitor

    Quote Originally Posted by BruceHun View Post
    Anybody know of a wifi battery monitor locally? Specifically not BT as these are easily available and i am looking for remote monitoring.

    What electrical system do you currently have which you want to connect this monitor to, what exactly is the application, you say remote monitoring?
    Do you want to monitor from across the campsite or do you want to connect it to the houses wifi and then monitor over the internet from anywhere?
    "The man who does not read has no advantage over the man who cannot read" - Not Mark Twain

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  9. #7
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    Default Re: WIFI battery monitor

    Sorry, should be more specific. For car or trailer batteries. Remote meaning anywhere outside of BT range and where the battery is within a WiFi zone. My FJ has built in WiFi si I can monitor it from anywhere via the Toyota app. My BL is parked at my office so I can only check battery voltage when I’m within BT range. My Def had the Incontrol app for various remote functions but does not show battery voltage. It also has onboard WiFi. My Tesla powerwall also has remote monitoring. It is a great feature to have.
    Last edited by BruceHun; 2021/08/26 at 09:23 PM.
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  10. #8
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    Default Re: WIFI battery monitor

    For true remote monitoring you need something with a data connection. If you want to use wifi and have a network with internet then I am sure you can use a raspberry pi with a voltage module if it does not support it out of the box. For even more remote monitoring, and if you have cellular reception, look at a device called GSMCommander. You can connect the battery directly to it and send an sms to the unit to request the voltage.

    You can even get the gsmcommander to send you a sms when the voltage is low.
    Last edited by Mjmza; 2021/08/26 at 09:43 PM.

  11. #9
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    Default Re: WIFI battery monitor

    Quote Originally Posted by BruceHun View Post
    Sorry, should be more specific. For car or trailer batteries. Remote meaning anywhere outside of BT range and where the battery is within a WiFi zone. My FJ has built in WiFi si I can monitor it from anywhere via the Toyota app. My BL is parked at my office so I can only check battery voltage when I’m within BT range. My Def had the Incontrol app for various remote functions but does not show battery voltage. It also has onboard WiFi. My Tesla powerwall also has remote monitoring. It is a great feature to have.

    What charging system do you currently have in your BL?
    I know the Victron solution but I'm sure there will be others as well.
    Victron BMV battery monitor connected to your battery plus a Victron GX device which connects to the internet via wifi. If you don't want to buy a Victron GX device like a Venus or Cerbo for around R5k, then you can also do it with a Raspberry PI and the free Venus OS software, it's not difficult at all even though the words Raspberry PI usually scare off some people right away.
    You can take this one step further even and connect a cell modem with a sim card for direct connection to the internet, then you don't even have to be in any wifi range.
    Last edited by bigboy529; 2021/08/27 at 10:11 AM.
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  13. #10
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    Default Re: WIFI battery monitor

    Can you give us a brief description how to go about this?

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    Default Re: WIFI battery monitor

    Quote Originally Posted by Woolf View Post
    Can you give us a brief description how to go about this?

    Ok you've got your 12V battery/s in your vehicle or caravan.

    1. You get a Victron BMV monitor which you connect to your system, these monitors have a shunt so it also gives you the advantage of proper local monitoring with state of charge, current in current out, exact usage etc. BMV700, BMV712 smart or Smart Shunt (which doesn't have a screen), depending on your budget, a monitor like this will cost anywhere between R2000 and around R4000.
    2. Then you also need a Victron GX device.
    The first option is A Venus GX or the newer Cerbo GX, they are both upwards of R5k. The GX device then also connects to your battery for power, they work directly off 12V.
    The second option is a Raspberry PI 2 or newer and a micro SD card which you buy for around R1000 or maybe you already have one lying around. You then download the Victron OS software and flash it on to the memory card, this is the same software which runs on the Victron GX hardware devices. Just a note here that it's 100% legal and above board, in fact Victron welcomes this, so nothing dodgy, no hacking here. You'll also need a way to power your Raspberry PI off your 12V battery, plenty options here like small DC-DC power supplies.
    3. Then you need a Victron VE.Direct to VE.Direct cable or VE.Direct to USB cable depending whether you have a Raspberry PI or GX hardware to connect your BMV monitor and GX device, they are available in different lengths, so will depend on the mounting in your van.
    4. Once all the hardware is connected you go on to the internet and create yourself a Victron VRM account, you then connect your GX device to your online VRM account and Bob's your aunty, monitoring from anywhere in the world as long as your GX device also has a internet connection.

    This is the short version, obviously every piece of equipment must be correctly installed and configured according to your system. I'll be glad to help further where I can, though the Victron documentation is great and explains it much nicer.
    And of course if you already have other Victron equipment like battery chargers, inverters, MPPT solar controllers you can connect all of it to your GX device as well to get a complete system picture.
    Last edited by bigboy529; 2021/08/27 at 11:19 AM.
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  16. #12
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    Default Re: WIFI battery monitor

    Thanks for this
    I'm still finishing off the build for my car.
    I have a Smartshunt.
    Looks like this will be a fun project to take on sometime

  17. #13
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    Default Re: WIFI battery monitor

    Quote Originally Posted by Woolf View Post
    Thanks for this
    I'm still finishing off the build for my car.
    I have a Smartshunt.
    Looks like this will be a fun project to take on sometime

    Great, then you only have to add a PI with Venus OS or a GX device, do you have other Victron equipment in your build as well?
    "The man who does not read has no advantage over the man who cannot read" - Not Mark Twain

  18. #14
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    Default Re: WIFI battery monitor

    I have the same request.

    Camera system running of Wifi with 102 Ah battery, solar panel and a 3G router.

    How do I remotely monitor the voltage of the battery?
    Everything is a hammer.
    Unless it is a screw driver.

    Then it it a chisel.

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  19. #15
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    Default Re: WIFI battery monitor

    Quote Originally Posted by bigboy529 View Post
    Great, then you only have to add a PI with Venus OS or a GX device, do you have other Victron equipment in your build as well?
    SmartSolar MPPT 100/30
    Orion-Tr Smart DC-DC
    Battery Protect

    120Ah Lithium Battery SA battery

    All working. Just refining the build
    Will definitely implement your suggestion at some stage
    Thanks again

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  21. #16
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    Default Re: WIFI battery monitor

    Quote Originally Posted by Woolf View Post
    SmartSolar MPPT 100/30
    Orion-Tr Smart DC-DC
    Battery Protect

    120Ah Lithium Battery SA battery

    All working. Just refining the build
    Will definitely implement your suggestion at some stage
    Thanks again

    Very nice system, you'll be able to refine it nicely once connected to a GX.
    As I'm typing here I'm busy building another Venus OS SD card for installing in a PI.
    "The man who does not read has no advantage over the man who cannot read" - Not Mark Twain

  22. #17
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    Default Re: WIFI battery monitor

    Quote Originally Posted by Uys View Post
    I have the same request.

    Camera system running of Wifi with 102 Ah battery, solar panel and a 3G router.

    How do I remotely monitor the voltage of the battery?

    I think the reason why wifi battery monitors seams to be quite scares is because wifi is actually very power hungry, so it's not at all ideal to be used in 12V applications, basically wifi never completely goes to sleep only to wake up when called upon, it can power down a bit, but it's always awake.
    I Google'd a bit today and can't find much more than what I already posted. As per usual plenty China solutions come up on Banggood etc. but I'm always very skeptical of those unless I know someone with personal experience.

    Look at this as well, looks like it can work, I have no personal experience.
    https://gsmcommander.com/applications/app-solar/
    Last edited by bigboy529; 2021/08/27 at 08:28 PM.
    "The man who does not read has no advantage over the man who cannot read" - Not Mark Twain

  23. #18
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    Default Re: WIFI battery monitor

    2014 Ford Ranger 3.2 XLT 4x4 D/C Auto
    2018 Ford Everest 2.2 XLS 2x4 auto (SWAMBO)
    Echo 4 trailer

  24. #19
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    Default Re: WIFI battery monitor

    Bruce Hunter
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  25. #20
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    Default Re: WIFI battery monitor

    Quote Originally Posted by BruceHun View Post
    I also found this, seems local but not too sure if itís the same thing?


    https://comtest.co.za/Products/Produ...itoring-system

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