Extremely annoying that there is no plug and wires in the kit for you to connect something. I had to disconnect the connector and solder the wires directly to the board. I use this device for my homemade and 3D printed work lights that I use every day at work. I wasn't expecting very accurate readings as it depends on the battery voltage to determine the percentage. It seems accurate enough for this purpose. The backlight is a bit dimmer than I expected, but it works. Hope it lasts, looks a bit cheap.
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