Battery goes down WAY too fast on ESP

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happytm
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Joined: 15 Aug 2016, 17:53

Re: Battery goes down WAY too fast on ESP

#51 Post by happytm » 03 Dec 2019, 21:02

Maybe try "my" code. I now got the ESP directly connected to a LiPo charged to 3.5V and it didn't change it's voltage by 1/100 of a Volt after 48h. This makes me confident that it will run fine for several month (over a year) with one measurement every 15min, even with the awful 5s uptime from a 6000mAh LiFePo4.
Maybe try "my" code. In theory it will run fine for one year one measurement every 15min, from a 450mAh LiFepo4 according to this calculator at http://www.of-things.de/battery-life-calculator.php :ugeek: .

Thanks.

izeman
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Joined: 24 Nov 2019, 12:11

Re: Battery goes down WAY too fast on ESP

#52 Post by izeman » 04 Dec 2019, 08:57

happytm wrote:
03 Dec 2019, 21:02
Maybe try "my" code. I now got the ESP directly connected to a LiPo charged to 3.5V and it didn't change it's voltage by 1/100 of a Volt after 48h. This makes me confident that it will run fine for several month (over a year) with one measurement every 15min, even with the awful 5s uptime from a 6000mAh LiFePo4.
Maybe try "my" code. In theory it will run fine for one year one measurement every 15min, from a 450mAh LiFepo4 according to this calculator at http://www.of-things.de/battery-life-calculator.php :ugeek: .Thanks.
Pretty sure it does work ways better in regards to battery life. But as I said: It's another "network" or "technology" that you have to implement. Maybe a bit over the top for one temperature sensor, if all other sensor work fine with the already existing infrastructure. I wish the ESP code didn't have the nasty habit to write into flash after every wifi initalisation. Then this would already help A LOT.

TD-er
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Re: Battery goes down WAY too fast on ESP

#53 Post by TD-er » 04 Dec 2019, 09:23

Maybe we can also disable the RF calibration, unless the WiFi connection fails.
Not sure how much that will save in time, but it may save more in energy as the calibration uses quite a lot of current (short bursts)

FanOfHue
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Joined: 06 Oct 2018, 10:08

Re: Battery goes down WAY too fast on ESP

#54 Post by FanOfHue » 29 Jan 2020, 20:39

Battery powered ESP sensor. ESPNOW protocol, report every 10 minutes. Discharge curve after 3 months of operation:
BatterySensor3months.png
BatterySensor3months.png (133.79 KiB) Viewed 2191 times

izeman
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Re: Battery goes down WAY too fast on ESP

#55 Post by izeman » 29 Jan 2020, 21:18

My sensor with a 5000mAh LiFePo4 went down from 3.36 to 3.34 in 5 weeks. Looks promising to last a whole season.

FanOfHue
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Re: Battery goes down WAY too fast on ESP

#56 Post by FanOfHue » 24 Mar 2020, 15:46

5 months, just in case anyone cares :lol:
BatterySensor5months.png
BatterySensor5months.png (72.99 KiB) Viewed 1170 times
I got a private request on the ATtiny firmware. I have stopped development on this forum but if anyone would like to continue, latest source is here:
https://github.com/FanOfHue/Other/tree/ ... nyExtender
It's really not my invention, it is based on this Letscontrolit stuff:
https://github.com/letscontrolit/NodoCl ... r/NodoTiny

TD-er
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Re: Battery goes down WAY too fast on ESP

#57 Post by TD-er » 24 Mar 2020, 17:03

That's a very nice achievement and I guess such low energy consumption can also be covered by a relatively small solar cell, especially if you can even cover the entire winter period on a full charge.

martinus
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Joined: 15 Feb 2020, 16:57

Re: Battery goes down WAY too fast on ESP

#58 Post by martinus » 24 Mar 2020, 17:18

FanOfHue wrote:
24 Mar 2020, 15:46
It's really not my invention, it is based on this Letscontrolit stuff:
https://github.com/letscontrolit/NodoCl ... r/NodoTiny
Cool to see that someone actually found this legacy stuff from the Nodo era :geek:
FanOfHue wrote:
24 Mar 2020, 15:46
I have stopped development on this forum
Any particular reason?

FanOfHue
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Posts: 96
Joined: 06 Oct 2018, 10:08

Re: Battery goes down WAY too fast on ESP

#59 Post by FanOfHue » 30 Mar 2020, 11:53

martinus wrote:
24 Mar 2020, 17:18
Any particular reason?
There was no need for my work here and I will start working on other challenges outside ESP world.
So this will be my last post here.
Goodluck to you all!

happytm
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Posts: 105
Joined: 15 Aug 2016, 17:53

Re: Battery goes down WAY too fast on ESP

#60 Post by happytm » 01 Apr 2020, 00:57

Great loss to ESpEasy community. Best of luck for your new project.

Thanks.

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