Notify when battery low via e-mail

[10der 832]

Subj.

 

1) device reported about battery low

2) I haven't now on weekend a new battery 

3) I turned off device 

4) fibaro still spam me: Fibaro System - Notification of the battery status

 

my question is : why?!

 

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[Sankotronic 2,370]

I had several devices with flat battery, for each I received e-mail every 30 minutes and even during sleeping time. Fibaro team, is it really so difficult to change that battery flat e-mail timer to get mail once per day?!?!?

 

I almost miss times when this flat battery e-mail notification was not really working on my HC2  

[10der 832]

offtopic: "I had". Why in the past tense? bad devices quality, other / different sorts of things? 

[Sankotronic 2,370]

41 minutes ago, 10der said:

offtopic: "I had". Why in the past tense? bad devices quality, other / different sorts of things? 

 

Hi @10der,

 

Sorry for my bad English, I just sometimes translate directly from Croatian to English keeping words in wrong sequence or choose wrong words.

 

What I meant with "I had" is that recently there were several devices with bad batteries in my system and I replaced batteries on all of them. Now all my devices has new or still good batteries and that is why past tense.

 

[10der 832]

58 minutes ago, Sankotronic said:

 

Hi @10der,

What I meant with "I had" is that recently there were several devices with bad batteries in my system and I replaced batteries on all of them. Now all my devices has new or still good batteries and that is why past tense.

1

 

Thank you for your response. Got it.

 

PS I'm Ukrainian. I clearly understand Polska and any Slavic languages But, yes, English tenses sometimes difficult for understanding  

[10der 832]

crazy!

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[petergebruers 1,268]

4 minutes ago, 10der said:

crazy!

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To be clear in this. Under the "red battery symbol" you have a list of devices. Are you saying that those device are that temperature sensor and that humidity sensor under the red arrows, bottom right of the screen? That is something new to me. I have not yet seen a low battery notification (top left) while all other battery symbols are green. Crazy indeed! Can you please check battery symbols of hidden devices?

[10der 832]

Sir, @petergebruers

You won't believe it, but.... I have entered into devices (where a battery was replaced) and now all OK!

[petergebruers 1,268]

1 minute ago, 10der said:

Sir, @petergebruers

You won't believe it, but.... I have entered into devices (where a battery was replaced) and now all OK!

 

Close your eyes for 5 seconds. Then slowly open them. Is everything still OK?

 

Then I believe you!

 

Ah, computers!

 

 

[10der 832]

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The music didn't play for long, the lame John's dance was pretty short.. :(

[petergebruers 1,268]

1 minute ago, 10der said:

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The music didn't play for long, the lame John's dance was pretty short.. :(

 

But that is interesting. This is a battery powered device. It is a MultiSensor or a MultiSensor 6?

 

Battery devices get "communication problem" or get status "dead" if the HC did not hear from them in a while. I do net have the exact explanation, but it has to do with "wake up interval" and communication problems...

 

What I would do....

 

Check batteries... again... Are these NiMH cells?

Bring the sensor to within 1 - 3 meter of HC2. Wake it up (with the button on the sensor). Does it come back to life?

[10der 832]

 >>It is a MultiSensor or a MultiSensor 6?

China dev.. : Z-wave Temperature & Humidity Sensor Smart Home EU Version 868.42mhz Z wave Smart detector

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CR2540 button battery was purchased 2 hours ago...

>>>Does it come back to life?

 

OK 
I'll go to the basement at home to wake the beast ...

 

[petergebruers 1,268]

10 minutes ago, 10der said:

CR2540 button battery was purchased 2 hours ago...

 

I see. Nice sensor, but battery type is ... a bit weak if I may say so (but who am I to say  ). It is about the smallest cell that can power a Z-Wave device. Well, you have got some CR2032 powered Z-Wave devices but they only work with very good quality batteries. CR2450 is used in the "Fibaro Key Fob" without problems, because Fibaro took care to design a good power supply

 

Anyway.

 

Shelf life of good batteries can be years. Shelf life of no-brand cheap cells can be less than 1 year (meaning they have less than 50% capacity left). How long where they on the shelf? I've bought some cells from non-reputable sources that have 5 x the expected internal resistance. Unfortunately, it's a bit difficult to measure the quality of the battery.

Edited July 24, 2017 by petergebruers

[Jamie mccrostie 82]

4 minutes ago, petergebruers said:

Unfortunately, it's a bit difficult to measure the quality of the battery.

Ive found the quality can be directly related to the purchase price 

[petergebruers 1,268]

5 minutes ago, Jamie mccrostie said:

Ive found the quality can be directly related to the purchase price 

 

LOL

 

Actually, not so funny, but quite right!

 

I do have a bunch of cheap primary and secondary cells. If you've got plenty of time, you can find batteries and suppliers that give you a good quality/performance/price ratio, but it is a minefield.

Edited July 24, 2017 by petergebruers

[Jamie mccrostie 82]

11 minutes ago, petergebruers said:

 

LOL

 

Actually, not so funny, but quite right!

 

I do have a bunch of cheap primary and secondary cells. If you've got plenty of time, you can find batteries and suppliers that give you a good quality/performance/price ratio, but it is a minefield.

Well unlike "Fibaro land" my real world has a few more time constriants and the price of a reliable battery oustrips the pain and suffering of a maybe fix.

Edited July 24, 2017 by Jamie mccrostie

[petergebruers 1,268]

14 minutes ago, Jamie mccrostie said:

Well unlike "Fibaro land" my real world has a few more time constriants and the price of a reliable battery oustrips the pain and suffering of a maybe fix.

Absolutely! I only toy with "bad" batteries because I want to understand the issues they cause. It's a hobby.

Edited July 24, 2017 by petergebruers

[Jamie mccrostie 82]

Just now, petergebruers said:

A

bsolutely! I only toy with "bad" batteries because I want to understand the issues they cause. It's a hobby.

 

I think you are going to have a ever increasing supply of shity  knock off products for your hobby looking at aliexpress

[petergebruers 1,268]

7 minutes ago, Jamie mccrostie said:

 

I think you are going to have a ever increasing supply of shity  knock off products for your hobby looking at aliexpress

 

Sorry for the thread hijack, @10der, but I do think it is a bit related to issues like "why is my battery still empty" and "why am I unable to include my device".

 

Ah, well. It takes a certain mindset to buy on Aliexpress. I've bought > 500 items over the years, a large percentage electronics stuff that is very, very basic.

 

To give you an idea of the extremes:

• Ultrafire 4000 mAh 18650 cell. If you've been following battery technology a bit, you'll know that around 3000 mAh from a reputable manufacturer is quite a lot these days. Yes, this is fraud, they are 1200mAh.
• PKCELL ICR18650 advertised as 2200 mAh. Tested discharge capacity of these cells (I have 4) is 2300 - 2400 mAh. Internal resistance is below 0.080 ohm (that is the limit of my tester, it's probably lower). Very low self discharge. Very good cells.
• primary ER14250 3.6 V knock-off from, yeah, sure, PKCELL: advertised as 1200 mAh. You can only test a primary cell once so I don't do that, but judging from some practical use here I'd say this capacity is plausible! BUT unusable like this in a Door/Window sensor. Internal resistance is between 10 and 30 ohm and that is too high. Good to run a clock or a small LED.
• primary MR14250 no-brand 3 V advertised as 600 mAh: very good! Internal resistance < 3 ohm and usable in Door/Window sensor (although their nominal voltage is lower than ER14250). Too soon to tell if I can get 600 mAh from them.

I try to use rechargeable cells whenever possible, but in general I'd say that is a bad idea too, unless the manufacturer of the device states that is possible to do so. I don't think I've ever seen one. So that is a minefield too... Also, they have lower capacity (rule of thumb 4x lower).

 

[10der 832]

5 hours ago, petergebruers said:

 

I try to use rechargeable cells whenever possible, but in general I'd say that is a bad idea too, unless the manufacturer of the device states that is possible to do so. I don't think I've ever seen one. So that is a minefield too... Also, they have lower capacity (rule of thumb 4x lower).

 

2

 

I have half a mind to replace button batteries with USB power supply....

[petergebruers 1,268]

17 hours ago, 10der said:

 

I have half a mind to replace button batteries with USB power supply....

 

Yes. But the nominal voltage of the batteries is 3.6 Volt and I am not sure if your device contains a voltage regulator. If it does not, the 5 V of a USB may be too high. Some low cost adapters have even higher transients and I've seen one having 6.1 V under no-load condition...