I will report here some experiment and reverse engineering of the latest LIDL smart battery. I'm mainly interested in the 20V line with bluetooth connectivity. Here some question I want to find answer for: * How to use the battery safely (the tools are responsible for opening circuit when the battery signal a low charge status). * How to have them work in serial. (how to handle the low charge information from multiple batteries) * How to read the battery status from the embedded bluetooth chipset? Reverse and document the Bluetooth protocol intended to be used with a phone app. Could I connect them with a ESP32? * How does it compare with custom cell arrangement + BMS? I would love to use thoses battery for mobile robot, camping, and for an ebike project.
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