Cannot charge Thingy 91 battery

[nicolae.georgescu]

Hello,

I cannot charge Thingy91 anymore. They used to work on battery but now they don't seem to even start. Both of them at once, which makes me think maybe i am doing something wrong.

When they are On and USB is in, they work. I see them connecting to the server, everything ok.
Afaik while connected to USB and ON they should also be charging. But after > 12 hours like this, if i unplug and turn on, nothing happens.

Is there anything I can do?

They are v1.6.0 2021.16.

If battery life is gone, can i order replacement accumulators?

Thanks,

Nicolae

[Achim Kraus]

The Thingy:91 uses a battery-management-chip. If your common to i2c you may try to read the charging state and battery voltage directly.

See power_manager.c ADP536x to get an impression, how that may look like.

[Jared]

Hi,

Are you able to measure the battery voltage when it's disconnected to the Thingy:91?

regards

Jared 

[nicolae.georgescu]

I would say no. How can i measure the battery voltage when it's disconnected?

Thanks

[Jared]

Hi,

You can route out the battery voltage do a breadboard and then measure the voltage with a multimeter.

regards
Jared 

[nicolae.georgescu]

I see. Which pins should i read from the thingy? Or i unplug the battery and try to measure from it's cable?