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ronaldcox
Joined: 24 Jan 2008
Posts: 38
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 Posted: Mon Mar 01, 2021 7:10 pm Post subject: 12v battery monitor with WiFi alerts? |
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Hi, smart people,
Does anyone know of a device that I can leave attached to a vehicle and would monitor the battery voltage (without running it down quickly itself)? I want something that will connect to my WiFi when the battery gets low and will give me an alert via email or text, or even on an app, before the car/airplane battery gets too low to start it. In this case this is for my wife's Lexus, but it would work for an airplane too, if there's WiFi available in the hangar, as there is in mine.
The car doesn't get driven enough, and when it does get used, the drives are too short to keep the battery topped off. I'd like to be able to set this and forget it until the alert tells me to go out and charge it.
I know I could use a maintainer, but she will NOT deal with stepping over and connecting/disconnecting the cord for that. It'd be an issue with the layout of our garage outlets. And I can just see her dragging a Battery Minder halfway to the beauty shop on the 2-3 times a month she drives her car.
What I'd like to do is get an alert when I need to hook up the big dog charger and top off the battery.
I know there's probably something in the RV or motorcycle world, but I've searched all over and can't find one that isn't just for local use (buzzer, etc. vs. WiFi alerts).
(Hey, maybe a giant Qi charger in the floor under her car... Nah.)
Thanks,
Ron
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Ron Cox
Glasair Super II F/T
Under Construction at C77 - Still just about to fly! |
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alec(at)alecmyers.com
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| Posted: Mon Mar 01, 2021 7:30 pm Post subject: 12v battery monitor with WiFi alerts? |
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Something like this?
https://www.alpha.ca/solutions/products/batteries/remote-battery-management-system/item/remote-battery-monitoring-system-plus
On Mar 1, 2021, at 10:08 PM, Ronald Cox <flyboyron(at)gmail.com> wrote:
Hi, smart people,
Does anyone know of a device that I can leave attached to a vehicle and would monitor the battery voltage (without running it down quickly itself)? I want something that will connect to my WiFi when the battery gets low and will give me an alert via email or text, or even on an app, before the car/airplane battery gets too low to start it. In this case this is for my wife's Lexus, but it would work for an airplane too, if there's WiFi available in the hangar, as there is in mine.
The car doesn't get driven enough, and when it does get used, the drives are too short to keep the battery topped off. I'd like to be able to set this and forget it until the alert tells me to go out and charge it.
I know I could use a maintainer, but she will NOT deal with stepping over and connecting/disconnecting the cord for that. It'd be an issue with the layout of our garage outlets. And I can just see her dragging a Battery Minder halfway to the beauty shop on the 2-3 times a month she drives her car.
What I'd like to do is get an alert when I need to hook up the big dog charger and top off the battery.
I know there's probably something in the RV or motorcycle world, but I've searched all over and can't find one that isn't just for local use (buzzer, etc. vs. WiFi alerts).
(Hey, maybe a giant Qi charger in the floor under her car... Nah.)
Thanks,
Ron
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user9253
Joined: 28 Mar 2008
Posts: 1908
Location: Riley TWP Michigan
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| Posted: Mon Mar 01, 2021 7:49 pm Post subject: Re: 12v battery monitor with WiFi alerts? |
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If the car starts, I wouldn't worry about it. But if there is a problem,
how about a Battery Maintainer extension cord like this one:
https://tinyurl.com/Maintainer-Extension-Cord
Dangle the plug end out in front of the radiator and close the hood. Tie the
charger cord to something so that it can not be dragged away. Plug the
charger into the extension cord. If your wife forgets to unplug it and drives
away, the cords will unplug with no harm done.
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Joe Gores |
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johnbright
Joined: 14 Dec 2011
Posts: 165
Location: Newport News, VA
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| Posted: Mon Mar 01, 2021 8:02 pm Post subject: Re: 12v battery monitor with WiFi alerts? |
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If you google "SKU: 081-0172" you will find a Battery Tender branded monitor that is inexpensive... and, there's an app for that.
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John Bright, RV-6A, at FWF, O-360
Z-101 single batt dual alt SDS EM-5-F.
john_s_bright@yahoo.com, Newport News, Va
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echristley(at)att.net
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| Posted: Tue Mar 02, 2021 6:10 am Post subject: 12v battery monitor with WiFi alerts? |
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You could switch to a LiFePo battery the next time it needs changing. They have a very low self discharge rate, and they will accept a much larger recharge current. So, it could sit six months and start the car without an issue, and then recharge in only a few minutes.
On Monday, March 1, 2021, 10:50:22 PM EST, user9253 <fransew(at)gmail.com> wrote:
--> AeroElectric-List message posted by: "user9253" <fransew(at)gmail.com (fransew(at)gmail.com)>
If the car starts, I wouldn't worry about it. But if there is a problem,
how about a Battery Maintainer extension cord like this one:
https://tinyurl.com/Maintainer-Extension-Cord
Dangle the plug end out in front of the radiator and close the hood. Tie the
charger cord to something so that it can not be dragged away. Plug the
charger into the extension cord. If your wife forgets to unplug it and drives
away, the cords will unplug with no harm done.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=500832#500832
http://www.matronics.com/Navigator?AeroElectric-List
http://forums.matronics.com
http://www.matronics.com/contribution[/url]
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argoldman(at)aol.com
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| Posted: Tue Mar 02, 2021 11:26 am Post subject: 12v battery monitor with WiFi alerts? |
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The LiFEPO batteries have great advantages and I have been on the advocate side almost since they came out. There are some caveats, however with which you should be familiar. True the shelf discharge is almost nil, however take the earth-x for example, there is circuitry which charges and balances the cells., which is great. However each model of the battery has a certain maximum charging amperage which you can use. Important to know. the discharge graph is different in that it will maintain close to its specified voltage until significantly discharged then drops off precipitously.
there are other things to look for. the other thing is the price.
Rich
--
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ronaldcox
Joined: 24 Jan 2008
Posts: 38
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| Posted: Wed Mar 03, 2021 7:31 am Post subject: 12v battery monitor with WiFi alerts? |
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From: Ernest Christley <echristley(at)att.net (echristley(at)att.net)>
You could switch to a LiFePo battery the next time it needs changing.=C2- They have a very low self discharge rate, and they will accept a much l
arger recharge current.=C2- So, it could sit six months and start the car
 without an issue, and then recharge in only a few minutes
......Â
That's true. But I probably should have been more careful with my terminology...
When I said "self-discharge", what I should have called it was more of a "parasitic discharge," from the car's electrical system. I haven't measured it, but modern cars seem to have more than older ones.
There is a continuous, normal, current draw, small though it may be, to maintain memories and run things like key fob receivers, security systems, etc. If the car is driven regularly, that's really not a problem.
A battery disconnect would stop that, but it would also add a major inconvenience in having to reset radio stations, seat positions, etc., each time it was reconnected, and it would also lose some of the computer's "driveability" information. So I discounted that idea.
And yes, there is the cost of the LiFePo battery.
I'm going to see if I can get the Deltran unit to work consistently, and will report back on that.
Thanks again for the suggestions.
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Ron Cox
Glasair Super II F/T
Under Construction at C77 - Still just about to fly! |
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art(at)zemon.name
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| Posted: Wed Mar 03, 2021 8:47 am Post subject: 12v battery monitor with WiFi alerts? |
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Have you considered asking your wife to take responsibility for keeping her car in operating condition? Let her choose between either driving it enough to keep the battery charged or using an external battery maintainer. Of course, the possibility exists that she doesn't care enough about whether her car starts to do anything about it. This may be your problem, not her problem.
  -- Art Z.
On Wed, Mar 3, 2021 at 9:46 AM Ronald Cox <flyboyron(at)gmail.com (flyboyron(at)gmail.com)> wrote:
| Quote: | From: Ernest Christley <echristley(at)att.net (echristley(at)att.net)>
You could switch to a LiFePo battery the next time it needs changing.=C2- They have a very low self discharge rate, and they will accept a much l
arger recharge current.=C2- So, it could sit six months and start the car
 without an issue, and then recharge in only a few minutes
......Â
That's true. But I probably should have been more careful with my terminology...
When I said "self-discharge", what I should have called it was more of a "parasitic discharge," from the car's electrical system. I haven't measured it, but modern cars seem to have more than older ones.
There is a continuous, normal, current draw, small though it may be, to maintain memories and run things like key fob receivers, security systems, etc. If the car is driven regularly, that's really not a problem.
A battery disconnect would stop that, but it would also add a major inconvenience in having to reset radio stations, seat positions, etc., each time it was reconnected, and it would also lose some of the computer's "driveability" information. So I discounted that idea.
And yes, there is the cost of the LiFePo battery.
I'm going to see if I can get the Deltran unit to work consistently, and will report back on that.
Thanks again for the suggestions.
|
--
https://CheerfulCurmudgeon.com/Friendship is like a stone. A stone has no value, but when you rub two stones together properly, sparks of fire emerge.Â
Rabbi Mordechai of Lechovitz
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cluros(at)GMAIL.COM
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| Posted: Wed Mar 03, 2021 11:04 am Post subject: 12v battery monitor with WiFi alerts? |
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Art I was thinking replace the car, the wife, or preferably both but Ron has probably already considered and dismissed those options.
It does remind me of my last Cadillac which had an "away" mode. When leaving town for a couple weeks there was a way to tell the car to go to sleep which would drastically reduce the parasitic loads on the battery. Perhaps Lexus has a similar option?
On Wed, Mar 3, 2021, 08:55 Art Zemon <art(at)zemon.name (art(at)zemon.name)> wrote:
| Quote: | Have you considered asking your wife to take responsibility for keeping her car in operating condition? Let her choose between either driving it enough to keep the battery charged or using an external battery maintainer. Of course, the possibility exists that she doesn't care enough about whether her car starts to do anything about it. This may be your problem, not her problem.
  -- Art Z.
On Wed, Mar 3, 2021 at 9:46 AM Ronald Cox <flyboyron(at)gmail.com (flyboyron(at)gmail.com)> wrote:
| Quote: | From: Ernest Christley <echristley(at)att.net (echristley(at)att.net)>
You could switch to a LiFePo battery the next time it needs changing.=C2- They have a very low self discharge rate, and they will accept a much l
arger recharge current.=C2- So, it could sit six months and start the car
 without an issue, and then recharge in only a few minutes
......Â
That's true. But I probably should have been more careful with my terminology...
When I said "self-discharge", what I should have called it was more of a "parasitic discharge," from the car's electrical system. I haven't measured it, but modern cars seem to have more than older ones.
There is a continuous, normal, current draw, small though it may be, to maintain memories and run things like key fob receivers, security systems, etc. If the car is driven regularly, that's really not a problem.
A battery disconnect would stop that, but it would also add a major inconvenience in having to reset radio stations, seat positions, etc., each time it was reconnected, and it would also lose some of the computer's "driveability" information. So I discounted that idea.
And yes, there is the cost of the LiFePo battery.
I'm going to see if I can get the Deltran unit to work consistently, and will report back on that.
Thanks again for the suggestions.
|
--
https://CheerfulCurmudgeon.com/Friendship is like a stone. A stone has no value, but when you rub two stones together properly, sparks of fire emerge.Â
Rabbi Mordechai of Lechovitz
|
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http://www.matronics.com/Navigator?AeroElectric-List |
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