Love this remote Bluetooth battery monitoring

[BrianElloy]

Nice being able to have a handle on EXACTLY the state of charge of my crank and aux batteries

Highly recommended

BM2 battery monitoring modules avail on eBay for about $30 each and the app is free

The graph shows the state of charge yesterday from parked/Idle, dipping when the car starts, rising to approx 14.5V when charging (driving) to pulse trickle charging on the CTEK.

The little switch on the left of the +ve terminal on the optima is a kill switch for the Traxide DBMS which btw definitely draws down from the cranking battery.

Hope this helps some of you who deal with battery issues like me!

Peace.

https://uploads.tapatalk-cdn.com/20190119/efac707a5d07ae35d2dc87dca479f8b8.jpg
https://uploads.tapatalk-cdn.com/20190119/dde923e4ee15b8eb0b85fc966e5157a2.jpg

[Ashes]

I’ve got these on on Starter battery, Aux Battery and also have one across the house batteries in my caravan.
There is a app that allows you to monitor 4 of these at the same time.
The one in the van is particularly useful as I can see the charge history, when lowest voltage occurs and also can see the graph dip when my compressor fridge kicks in.

[austastar]

Hi,
Link??

Cheers

[Eevo]

super cheap auto have these for $50.
great devices.
have one over nearly every car and bike

[BrianElloy]

Hi,
Link??

Cheers

BM2​​ BLE Battery Monitor Bluetooth 4.0 Device Car 12V Battery Tester BM2?? BLE Battery Monitor Bluetooth 4.0 Device Car 12V Battery Tester | eBay (https://rover.ebay.com/rover/0/0/0'mpre=https%3A%2F%2Fwww.ebay.com.au%2Fulk%2Fitm%2 F323541339502)

[BrianElloy]

I’ve got these on on Starter battery, Aux Battery and also have one across the house batteries in my caravan.
There is a app that allows you to monitor 4 of these at the same time.
The one in the van is particularly useful as I can see the charge history, when lowest voltage occurs and also can see the graph dip when my compressor fridge kicks in.

I’m looking for that app .. the BM2 app allows you to connect multiple monitoring devices but only display one at a time.

Switching between batteries is a bit of a pain

[Ashes]

It is in the App Store as Multi-Battery Monitor. I think it was a paid app though. Works well.

[BrianElloy]

Here it is: Multi-Battery Monitor by dacheng Multi-Battery Monitor on the App Store (https://itunes.apple.com/au/app/multi-battery-monitor/id1345741752'mt=8)

[DiscoJeffster]

Found them for $32 on eBay including delivery, Aus stock. An 18% off eBay special supposedly. Bought 3.

[kelvo]

I bought my three from this seller 12V Vehicle Battery Monitor via bluetooth 4.0 Voltage Meter Tester w/ auto Alarm 725704230453 | eBay (https://www.ebay.com.au/itm/232755060236) and use the $14.99 app to monitor all three together.

Have my starter, aux and camper trailer batteries monitored. You can see when the sun hits the camper trailer solar panel.

[drivesafe]

Hi folks, up until a few days ago, the 4 battery monitor was only available for iPhones, but I got an E-mail from the manufacturer during the week, that they now have an Android version of the app.

I have not had time to look it up, so if someone can, please put up a link to the Android app.

[austastar]

Hi,
Yesterday I could only find the single battery monitoring app.
Cheers

[kelvo]

Hi folks, up until a few days ago, the 4 battery monitor was only available for iPhones, but I got an E-mail from the manufacturer during the week, that they now have an Android version of the app.

I have not had time to look it up, so if someone can, please put up a link to the Android app.

I would say it’s this one BM3 - Apps on Google Play (https://play.google.com/store/apps/details?id=com.dc.bm3test) confusingly called the BM3, but works with the BM2

[austastar]

Hmmm,
My Galaxy Note warns me that app is not compatible.

https://i.imgur.com/rgzFesu.png
link (https://i.imgur.com/rgzFesu.png)
Cheers

[Eevo]

I would say it’s this one BM3 - Apps on Google Play (https://play.google.com/store/apps/details?id=com.dc.bm3test) confusingly called the BM3, but works with the BM2

yes, it works on my phone.

any idea what battery pack voltage is?

[kelvo]

any idea what battery pack voltage is?
Just the total voltage of all the connected BT monitors. Can’t see the point of it in my three seperate 12v battery setup. Maybe useful if monitoring individual batteries in a series configuration.

[Ranga]

So, basically you can connect 3 of these to 3 separate batteries. A couple of questions:

The app can connect to all 3 units at the same time?
How does it connect/disconnect?
Can the alarm tell you when an auxiliary drops to a certain level? Can you set the level? Audible and visible?
How much history does it store?

[Homestar]

Yes, the app (paid app not free) can do up to 4 units at once - I have 3 on mine. With the app running it will just pick up any unit in range when you get close enough and download it’s history. With my phone sitting in its cradle, it will pick up the cranking, Aus and caravan batteries when I’m towing it all at once. Yes you can get an alert when the battery level is low. Not sure how far the history goes back sorry, never really played with that functionality.

Very happy with mine.

[Ranga]

Just bought 3 - 2 for inside the Defender, 1 for the camper. Should be handy, particularly in the camper.

[weeds]

Umm, while temping and this smart phone world seems it’s a must have but I think I’ll stick to the good old multimeter which has worked just fine for the last 20 years.

[Homestar]

Umm, while temping and this smart phone world seems it’s a must have but I think I’ll stick to the good old multimeter which has worked just fine for the last 20 years.

Yeah, I still carry a multimeter but for other stuff now. Don’t need to pop the bonnet, open a cupboard, etc to check anything - can stay seated near the campfire with a beer and check it if needed. 😊

Also found I wanted to check batt volts one night after I’d jumped into bed as I wanted to run a fan all night - easy as. 👍

[SeanC]

Brian, or anyone with a D4. Does the negative terminal come from the factory with the ability to connect other cables to it? In my D3 all negative wires are grounded to the chassi. You can’t attach anything extra to the neg terminal.

I went to Supercheap yesterday and got a monitor. Good bit of kit.

[BrianElloy]

Brian, or anyone with a D4. Does the negative terminal come from the factory with the ability to connect other cables to it? In my D3 all negative wires are grounded to the chassi. You can’t attach anything extra to the neg terminal.

I went to Supercheap yesterday and got a monitor. Good bit of kit.

Mine did (2016 TDV6)

[drivesafe]

Hi again folks, this link will give you more info about the BM2 monitors.

PLEASE NOTE I no long supply these.

BM2 Bluetooth Battery Voltage Monitors (https://www.aulro.com/afvb/the-verandah/261576-bm2-bluetooth-battery-voltage-monitors.html)

[weeds]

Yeah, I still carry a multimeter but for other stuff now. Don’t need to pop the bonnet, open a cupboard, etc to check anything - can stay seated near the campfire with a beer and check it if needed. [emoji4]

Also found I wanted to check batt volts one night after I’d jumped into bed as I wanted to run a fan all night - easy as. [emoji106]

For overnighters I don’t even give batteries a second though....

If the car is parked up for the whole day with solar....again I don’t even give a second thought.

If it’s cloudy/raining and I’m parked up all day I start to think about checking...

Oh, I only have 1 aux and it separates from the starter as soon as I kill the donk....only run one fridge and one led light strip.....

Hang on....about to install a travel Buddy Oven......nah still won’t be overly worried.

[Homestar]

Agreed, I don’t check mine one short stays, but depending on what I’m doing and what the weather is like I do. My van runs a 90 litre Engel 24/7 off its batteries even when I’m not using it which the batteries cope with fine, but long stays, overcast weather, heaters, tv’s, etc will see me keeping an eye on them.

[SeanC]

Hang on....about to install a travel Buddy Oven......nah still won’t be overly worried.

Yep. Got my eye one too. Nothing like a hot pie for lunch. Where are you thinking of putting it? How are you going to mount it?

[weeds]

Yep. Got my eye one too. Nothing like a hot pie for lunch. Where are you thinking of putting it? How are you going to mount it?

Er whoops, just noticed this is a D3/4 thread......

Mine is going above the fridge and accessed through the gull wing on he defer

I’m actually giving it a run tonight for the first time, on the bench in the garage.

https://uploads.tapatalk-cdn.com/20190120/418a2c065a2b3d3cc11476bdf7a2ac19.jpg

[Ranga]

Umm, while temping and this smart phone world seems it’s a must have but I think I’ll stick to the good old multimeter which has worked just fine for the last 20 years.

But multi-meters don't have an alarm on them. [wink11] I've got a visual gauge inside the camper, but as Gav said, it's only good whilst the campers open. I also like the history, but I'm because I'm a nerd and an analyst :)

Not sure if I'll bother using the other 2 in the Defender - I can already see one battery's voltage on the Madman gauge. Probably palm them off to someone else if I don't use them.

[DiscoJeffster]

As most of us know, for the battery management system to work effectively we connect the negative terminal of all accessories to the body earth.
How are these best connected? Directly to both the positive and negative or negative to the chassis?

[SeanC]

Er whoops, just noticed this is a D3/4 thread......

Mine is going above the fridge and accessed through the gull wing on he defer

I’m actually giving it a run tonight for the first time, on the bench in the garage.

https://uploads.tapatalk-cdn.com/20190120/418a2c065a2b3d3cc11476bdf7a2ac19.jpg

Hang-on now.A roast?!! This type of glamping is fine if you have a Disco but if you drive a Deefer, well that’s just soft. Just stick with the dehydrated meals.[bigwhistle]

[drivesafe]

As most of us know, for the battery management system to work effectively we connect the negative terminal of all accessories to the body earth.
How are these best connected? Directly to both the positive and negative or negative to the chassis?
The BM2 draws such an insignificant amount of current that it will not effect the BMS, so fitting it directly to the cranking battery’s terminals would be the best setup and would remove any erroneous voltage drop readings that would occur if the negative connection of the BM2 was made somewhere else, and if the cranking battery was low and being charged by the alternator.

[weeds]

Hang-on now.A roast?!! This type of glamping is fine if you have a Disco but if you drive a Deefer, well that’s just soft. Just stick with the dehydrated meals.[bigwhistle]

Er a little older these days.....no longer need to rough it, we do carry some dehydrated meals in the pack for over night walks.

https://uploads.tapatalk-cdn.com/20190120/015aa077001722920b4f6dd24cfb8578.jpg

[drivesafe]

I’ve got these on on Starter battery, Aux Battery and also have one across the house batteries in my caravan.
There is a app that allows you to monitor 4 of these at the same time.
The one in the van is particularly useful as I can see the charge history, when lowest voltage occurs and also can see the graph dip when my compressor fridge kicks in.
Hi Ahses, the 4 module app is idea for travelling with a van.

You can monitor the Cranking battery, Auxiliary battery, the House batteries, and most importantly, you can monitor the Breakaway battery, if one is fitted.

NOTE, the use of a BM2 to monitor the Breakaway Battery in NSW does not meet the Manditory requirements, but in all other states, it makes it easy to keep an eye on the Breakaway Battery while monitoring all the others.

The only downside to using something like this is that most people will not really understand what they are seeing. People need to get a basic idea of how batteries work, so they can get the best results from their BM2.

[drivesafe]

The graph shows the state of charge yesterday from parked/Idle, dipping when the car starts, rising to approx 14.5V when charging (driving) to pulse trickle charging on the CTEK.

Hope this helps some of you who deal with battery issues like me!


https://uploads.tapatalk-cdn.com/20190119/dde923e4ee15b8eb0b85fc966e5157a2.jpg
That is an interesting result as the graph shows your battery was near fully charged before you started driving.

It unfortunately it does not give any idea of how much battery capacity is actually available.

[SeanC]

Er a little older these days.....no longer need to rough it, we do carry some dehydrated meals in the pack for over night walks.

https://uploads.tapatalk-cdn.com/20190120/015aa077001722920b4f6dd24cfb8578.jpg

Nice Set-up.

[DunnToImpress]

I bought one of these this morning!!! Wasn't sure if it could work on two batteries at once. Suppose i will order another one now!!!! Good to know they are a good item, looking forward to having a play with it!!![bigsmile]

[Pedro_The_Swift]

Anyone care to tell what range their Bluetooth 4 will connect to?
I'd love to put one on the van and check from the house.. maybe 50 feet, in direct line of sight though

[drivesafe]

I irregularly get connections made at 20m but it is more hit-n-miss at that distance and I usually make sure I am close enough to get a positive link.

[madden]

Hi guys, I have 3 x 120ah batteries connected in parallel, if I bought 3 units and connected them 1 across each battery, would I be able to read each battery without messing things up?
Cheers

[Eevo]

yes.
but in theory, as they are all in parallel, they would read the same voltage.

[DiscoJeffster]

Yes as Eevo says, as they’re directly connected next to each other and not ever separated, it’s pointless. They can never read differently as while connected together, each one levels itself with its friends. It makes sense when there is a source of isolation between them such as a Traxide, or a camper that’s detached from the main vehicle. Place one in each segment, say crank battery, fridge battery on other side of isolator, and one across the camper/house/caravan whatever you want to call them

[DrDeath]

Not being paranoid or anything, but these things are made in China. Is the Chinese Politbureau using them to plan a global Landy shutdown, or to discover our secret fishing spots, per the recent Huawei incidents ? They probably don’t realize that Landies can easily be pushed if they sabotage our batteries ...

[Eevo]

i would like to know how the device could be used to sabotage.

[DiscoJeffster]

i would like to know how the device could be used to sabotage.

joke

noun
1.
a thing that someone says to cause amusement or laughter, especially a story with a funny punchline.
"she was in a mood to tell jokes"

[grey_ghost]

I just bought 4 of these:

Installed 1 in the FFR
1 in the D1
1 in the Rangie

Will probably install the last one in the 101...

It would be great if you could monitor more than 4...

[austastar]

Hi,
Mine arrived yesterday.
It has problems on the Galaxy Tablet. It won't reconnect after the tablet gets out of range.
On an Oppo phone it works as expected,
Cheers
Edit.
Grrrr!
Now it has frozen and won't update the Voltage.

Edit.
App requires Android 4.3, mine is 4.4.2, so that is not the problem.

[Ranga]

Installed 3 yesterday, 1 in the camper, 1 on the cranker, and 1 on the auxiliary.
I think it's helped to diagnose a problem with the camper fridge. As expected, the voltage drops when the fridge compressor kicks in. However, it seems to be working the opposite to what it should. I see occasion voltage spikes, instead if drops, which looks like the fridge is running most of the time, and only occasionally turning off. It has been warm weather (about 30 degrees), but the fridge is in a fairly cool location, and rarely opened.

[drivesafe]

Installed 3 yesterday, 1 in the camper, 1 on the cranker, and 1 on the auxiliary.
I think it's helped to diagnose a problem with the camper fridge. As expected, the voltage drops when the fridge compressor kicks in. However, it seems to be working the opposite to what it should. I see occasion voltage spikes, instead if drops, which looks like the fridge is running most of the time, and only occasionally turning off. It has been warm weather (about 30 degrees), but the fridge is in a fairly cool location, and rarely opened.
Also be aware, the lower the battery voltage, the longer the fridge will run for.

[austastar]

Hi,
Well a different app has sort of solved the problem.
The AEG app, by the same company as make the BM2 app will run on the Samsung Galaxy, although with less features.
It seems to not be able to access the Voltage history log from the Battery Monitor, only showing what is recorded in real time.
It is not a show stopper, I can check the current voltage as I want, and pinch the Mrs' phone if I need to check history.
Incidentally, the Battery monitor will only pair with one phone/tablet at a time.
Cheers

[DiscoJeffster]

Fitted three last night. Find the app a little hit and miss when it comes to reconnecting (4 battery app). Have had to reset the app (double tap swipe up, end it) to get it to connect to the monitors. The data is good. Interesting to watch how a Disco is charged and how it will take a well charged battery and let it run down. I understand it’s trying to balance its charging level but I can also see how short trips can equal a flat battery more than vehicles without ‘smart’ alternators.

https://uploads.tapatalk-cdn.com/20190130/7bdfc6f52347595ec22aefdad336156f.jpg

[drivesafe]

Hi Disco, that graph also shows you have a fully charged battery in the lead up to your drive.

If you discharge your cranking battery a bit, you will see how the SMART alternator operates to get the battery back up to a fully charged state while you are driving.

Also note, there are differences in how a D3, early D4 and the later D4 alternators operate.

[DieselLSE]

...Also note, there are differences in how a D3, early D4 and the later D4 alternators operate.
Hi Tim,
When you have a bit of time, could you elaborate on that? Or point to a previous post where it is explained?

[DunnToImpress]

Bugger, I accidentally deleted the BM3 app off my phone and now it doesn't seem to be on Google Play anymore!!! Can't seem to get it back!!

[Plutei]

I just downloaded it yesterday, should be there

[DrDeath]

So, has anyone found their batteries secretly sending their Landy’s intimate details or locations off via secret sino-software spies, or finding some intense urge to drive north west, or noting untoward power leakage or more frequent pushing or anything yet ?

... otherwise, I might get one too ... but let me see, I’ll need an automotive radiation and software firewall first ... and a tightly tuned active antenna to reflect malicious code, then a managed switch ... oh, and an extra two batteries to drive all that ... and more software monitoring devices ... and an extra firewall ... bxxxxy batteries must be losing power somehow ... probably the secret Chinese software ..

[barney]

Here it is: Multi-Battery Monitor by dacheng Multi-Battery Monitor on the App Store (https://itunes.apple.com/au/app/multi-battery-monitor/id1345741752'mt=8)

For those of us with Android devices, here it is on Google Play for free https://play.google.com/store/apps/details?id=com.dc.bm3test (http://play.google.com/store/apps/details?id=com.dc.bm3test) instead of $13.99 . ;)

[Ozzy119]

Thanks for the tips. Fitted and now I realise how low the D4 charge rate is. I appear to be averaging 13.71v at the Aux battery under normal driving.

[Ferret]

Put your foot on the brake or coast a bit. Does it jump to ~14.4V? If so all is normal.

Your battery could just be pretty much fully charged as well.

[Ozzy119]

Put your foot on the brake or coast a bit. Does it jump to ~14.4V? If so all is normal.

Your battery could just be pretty much fully charged as well.

Not yet. I've only travelled a few KM with it so far, but never got it (hard foot down) above 13.81

[Ferret]

Not yet. I've only travelled a few KM with it so far, but never got it (hard foot down) above 13.81

It's a so called 'smart charger', designed to only pump current into the battery when there is excess power from the engine available. So if by 'hard foot down' you mean 'hard acceleration' then it will tend dial down voltage to the battery in favour of giving a little more engine power to the wheels.

On some occasions it will favour fuel economy over battery charging, depends on driving conditions and battery conditions.

Watch it when you brake or on over run down a hill, you should get 14.2V - 14.4V on these occasions. If your battery is a bit on the flat side, then under these conditions you may see up to ~14.8V.

I believe some earlier model vehicles have needed software updates to the BMS to operate properly so monitor it for a while, see how it goes.

[drivesafe]

Not yet. I've only travelled a few KM with it so far, but never got it (hard foot down) above 13.81
Hi Ozzy, it sounds like your batteries are pretty well charged.

Also note, if your auxiliary battery is an Optima Yellowtop, then at 13.71v, you can still fully charge it.

A Ferret pointed out, there are a number of factors the BMS takes into account when setting the operating voltage, so after a week or two, try discharging your setup down a bit and then see how the BMS reacts.

With D3s and 2.7 D4s, they have a 30 second start up routine, where the voltage remains low and the ECU determines what high voltage to operate for the next 30 minutes, then it settles down to a normal operating voltage. There is more to it but that is the basics.

Except for the 2.7 D4s, all D4s have a more complex BMS control and this monitors a range of factors, beginning with the startup voltage. You may not see a rise in your voltage for a number of minutes after starting, or if the cranking battery is low, the voltage may rise very quickly after starting.

Your BM2 monitor is ideal for learning how your vehicle is effected by your driving style.

If you can, post up some graphs when you have done a few days driving. This will help others to compare operating voltages and driving habits.

[Ozzy119]

Hi Ozzy, it sounds like your batteries are pretty well charged.

Also note, if your auxiliary battery is an Optima Yellowtop, then at 13.71v, you can still fully charge it.

A Ferret pointed out, there are a number of factors the BMS takes into account when setting the operating voltage, so after a week or two, try discharging your setup down a bit and then see how the BMS reacts.

With D3s and 2.7 D4s, they have a 30 second start up routine, where the voltage remains low and the ECU determines what high voltage to operate for the next 30 minutes, then it settles down to a normal operating voltage. There is more to it but that is the basics.

Except for the 2.7 D4s, all D4s have a more complex BMS control and this monitors a range of factors, beginning with the startup voltage. You may not see a rise in your voltage for a number of minutes after starting, or if the cranking battery is low, the voltage may rise very quickly after starting.

Your BM2 monitor is ideal for learning how your vehicle is effected by your driving style.

If you can, post up some graphs when you have done a few days driving. This will help others to compare operating voltages and driving habits.

Thank you for clarifying this. Mine is a 2.7D4 with your earlier (2010) dual battery system (Yellow top) which is what I have attached the unit to.

I'll see how it all goes over the next week weeks.

[winglen]

I believe some earlier model vehicles have needed software updates to the BMS to operate properly so monitor it for a while, see how it goes.

Mine is a end of run 2016 model, but only showed this smart charging behaviour late last year when the dealer changed the cranking battery under warranty and must have updated the BMS software at the same time. So I’d expect this behaviour to a bit hit and miss.

[BrianElloy]

Having ongoing troubles with my Traxide DBMS

For the last week I’ve had my main battery on trickle (7 amp Ctek), with the Traxide on and allowing my Optima to be charged also

After 1 week I jump in the car to get the annoying “Low battery please start engine” warning

WTF?

Disconnected both the Traxide and Optima negative terminal and recharged the cranking battery overnight

Is this normal??

[drivesafe]

Hi Brian, you need to post up your battery voltage readings so we can see if there is a problem or if it is a software issue.

It is commonplace in D4s to still get a “Low Battery, Start Motor” message, even though the cranking battery is fully charged.

Try doing a HARD RESET and see if this fixes the problem.

Again, post up your battery voltage readings.

[Ozzy119]

So we made it to the dizzying heights of 13.94v on three trips today. All were over 30mins travelling time. That magical 14.4 is looking like an urban myth in the smart alternator world ha ha. No wonder the KK bank of 6 AGMs (200amp hrs) doesn't get a decent charge, even with a large volume of driving hrs in the day.

Brian, your cranking battery might just be on the way out. They just do that. No warning, no rhyme or reason.

[drivesafe]

Hi again Ozzy, do you use the dual battery’s in you D4 to run a fridge when not driving?

If your D4 batteries are fully charged, there is no reason for the voltage to rise.

[Ozzy119]

Hi again Ozzy, do you use the dual battery’s in you D4 to run a fridge when not driving?

If your D4 batteries are fully charged, there is no reason for the voltage to rise.


Thanks. All the accessories are turned off right now. So from what I can decipher it means the batteries are in good charge order and don't require a higher alternator input voltage. I'm heading away over Easter with everything plugged in and so will be interesting to see how we go. Very keen to see how the solar input goes with this level of info. Previously (for the car) I was relying on a volt metre. Not so accurate ha ha

[DiscoJeffster]

Just one of many time my D4 charges up to 14.7-15.0V.


https://uploads.tapatalk-cdn.com/20190311/6ade9ca55b04b588adb642ce897bdae2.jpg

[SeanC]

So we made it to the dizzying heights of 13.94v on three trips today. All were over 30mins travelling time. That magical 14.4 is looking like an urban myth in the smart alternator world ha ha. No wonder the KK bank of 6 AGMs (200amp hrs) doesn't get a decent charge, even with a large volume of driving hrs in the day.

Brian, your cranking battery might just be on the way out. They just do that. No warning, no rhyme or reason.

Just over 13.8 volts is the maximum I get while driving in my D3 and 14.3 volts on the charger.

[BrianElloy]

Hi Brian, you need to post up your battery voltage readings so we can see if there is a problem or if it is a software issue.

It is commonplace in D4s to still get a “Low Battery, Start Motor” message, even though the cranking battery is fully charged.

Try doing a HARD RESET and see if this fixes the problem.

Again, post up your battery voltage readings.

Yesterday’s readings (crank battery only) . Shows trickle charge going for s drive and then idle.

I did a hard reset (removed negative terminal for 15 mins) and the message went away but surely this is not requiredhttps://uploads.tapatalk-cdn.com/20190312/35f2ed0562f45a035757f4f0b8fff9bf.jpg

Aux has been disconnected

[drivesafe]

I did a hard reset (removed negative terminal for 15 mins) and the message went away but surely this is not required
Hi Brian and this is something that only seems to occur in D4s, and randomly.

I first came across UK D4 owners having to resort to a hard reset after charging the cranking battery, but it is only required in some D4s.

My guess is it is some sort of software glitch.

[Ozzy119]

So my apps says battery is at 98% at 12.46v. Do these two values really correlate as true ?

[SeanC]

So my apps says battery is at 98% at 12.46v. Do these two values really correlate as true ?

12.38 volts on mine was about 65%.

[Mog60]

Have a look at the state of charge "resting" chart in Post 26 from Tim (Traxide)

Traxide Dual Battery Voltages (https://www.aulro.com/afvb/l319-discovery-3-and-4-a/236858-traxide-dual-battery-voltages-3.html)

[alpick]

Bought three units off ebay

galaxyS10. Android 9. 4.9 bluetooth 5

Monitor unit asks for Bluetooth pairing code, none on instructions, guessed it, 000000.

unit pairs with phone

BM2 app. Monitor will not connect with phone

BM3 app. As above.

guessing software compatability issue.

Anyone else?

Works as advertised on my ipad mini app!
Works ok on my samsung tablet !

[Eevo]

im loving mine less. another unit failed. second unit in 6 months. i got 4 total.

[drivesafe]

Hi Eevo, what is happening when it fails?

I have one that intermittently stops monitoring and then starts again.

[Eevo]

Hi Eevo, what is happening when it fails?

I have one that intermittently stops monitoring and then starts again.


first one was erratic voltage readings. showed anywhere between 15 and 30 volts while connected to the 12v motorcycle
second one has simply stopped responding. BM2 and BM3 cant find it. i tried physically disconnecting it, waiting 1min and reconnecting it. no joy.

[SeanC]

So my apps says battery is at 98% at 12.46v. Do these two values really correlate as true ?
Installing an android head unit today and the battery dropped to 12.53 volts and 75%. So yours may not be measuring properly.