Battery level stays at 0%
I purchased two PCS of Meta Wear R, charged, connected to my smartphone and they work great. But I also needed to implement some kind of battery monitoring in my app and I realized that one of these Meta Wear R devices always return 0% no matter if I plug it in USB. Other one works great.
I read somewhere that upgrading to the newest version of firmware should fix these problems but it didn't fix it.
Could it be hardware issue or I can test something else?
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