Blueolar and Blue Battery are Bluetooth Low Energy (BLE) based systems to record the most important indicators of the battery and / or solar installation of a mobile home. A separate small device is connected to the battery circuit, and to the existing solar charge controller. The Blue Battery app then displays all the major parameters.

Blue Solar is a Bluetooth-based device for recording the most important indicators of the solar installation of a mobile home.
https://www.blue-battery.com/product-page/bluesolar-d1
https://www.blue-battery.com/product-page/bluesolar

Blue Battery is in addition to the solar system also include the most important values ​​of the battery of the mobile home.
https://www.blue-battery.com/product-page/bluebattery
https://www.blue-battery.com/product-page/bluebattery-200a

The determined values ​​of the BlueSolar- and Blue Battery devices are received via Bluetooth from this app and displayed.

Those who want to support the developer of this app financially, instead of this app the app Blue Battery + (https://play.google.com/store/apps/details?id=de.andreasnagel.bluebattery) can install that some additional features as well as an English includes translation.