Need a recommendation for 1/2 AA batteries

[alexsh1]

Hi

I have purchased TADIRAN TL-5902 1/2AA batteries, but my Z-wave sensor is eating them for breakfast. The original battery lasted more than a year. Each Tadiran lasts about 1-2 months. Very poor result
Anyone dealt with good quality 1/2 AA batteries? Where do you buy them please?

[gohan]

Get some LiFePo4, like the kit from soshine (4 batteries + 2 connectors)

[alexsh1]

@gohan I have a sensor like this

https://www.vesternet.com/z-wave-fibaro-universal-door-window-sensor-gen5

Tue battery 1/2 AA is inside and I cannot fit in other batteries as the space is limited.

FYG - I did place an order a month ago for Soshine LiFeSo4 batteries and they are still in a snail mail. All sensors can powered directly from them.

[Johhnywalter]

Hello, has anyone here used LiFePO4 batteries to power MySensors nodes ?
The look really interesting for low power nodes in 10440 format :

low capacity compared to li-ion but somewhere between 200 and 280mAh which is ample for over a year
low self discharge which allows to survive the full year
maximum voltagehttp://jonsguide.org/best-laser-measure-reviews/#bosch-compact-laser-distance-measure-120-feet-glm-35 below the NRF24 max so no need for a regulator with measure!
minimum voltage around 2V but with a light load if I believe the discharge curves I see over 90% of the capacity is available with a voltage over 2.7V meaning most of the capacity can be used without changing the bootloader and BOD.
As it's a bit rare and expensive (at least for sellers offering delivery in my country ) and it needs a special charger I would like to have some feedback from people who are using some.

Thank you for reading

[gohan]

I'm using them, I got the ones from soshine and the stated capacity is just a little more than the one measured by the charger.