THING 91: WorkingConditions

[Hoang]

Dear, 

I am testing with thing91 

todo: read and send the temperature to my webserver in each 15mn 

using: thingy91, LTE_M

sample1: in the fridge  (4C)

sample2: in the freezer (-22C)

Problem: 

sample2: stopped working when the battery was 55%

sample1: stopped working when the battery was 45%

My state machine: 

Connect LTE_M

Sleep(15mn) - to get stable temperature

loop{

     read(Temp,Battery) 

     http_post to my webserver

    Sleep(15mn) 

}

Could you plz tell me why? 

I am using the original battery of thingy91

BR

Hoang Nguyen

[MJD093]

Sounds like your battery is not handling the cold too well. Batteries have their own temperature range that they need to be at in order to work efficently. That battery is likely a room temperature battery and not really designed for sub-zero and near-zero temperatures. The fact the battery failed faster in the freezer would support this idea. See the link below for info on batteries and temperature.

batteryuniversity.com/.../discharging_at_high_and_low_temperatures