You are reading a single comment by @DanDyse and its replies.
Click here to read the full conversation.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@DanDyse
Strange. I have tested different batteries now including the original CR2032, which shows correct values! The LFP batteries I use have over-& undervoltage protection AND they have a small circuit connected for charging. The circuit output is connected directly to the battery and therefor to the puck as well. This one is supposed to be "doing something" only when a charging cable is connected but seems to interfere nevertheless. Need to think how I can prevent it from doing so.