With the Battery-Guard and Apple, Android or Windows App, you can now check your battery's state of charge quickly and easily. Because only with a fully charged vehicle battery can you be sure to avoid getting stuck. Works on 6, 12 and 24V DC systems with a power consumption of between 6 - 24 mW Installation is just 4 easy steps:

1. Download the Battery-Guard App from the App Store, Google Play Store or from the Windows Store under "Battery-Guard". Compatible from iPhone 4S, Android 4.3 and Windows 10.
2. Attach the Battery-Guard to the battery terminals. Fix the transmitter to the cleaned battery using the adhesive film provided.
3. Activate Bluetooth on your smartphone and then open the App. Bluetooth search mode is not required.
4. The transmitter appears in the list display. You can assign a name, an image and the rated voltage to the transmitter.

Compatible as of iPhone 4S, Android 4.3 and Windows 10