With the Battery-Guard and Apple or Android 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.
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Compatible as of iPhone 4S, Android 4.3 and Windows 10
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.
Attach the Battery-Guard to the battery terminals. Fix the transmitter to the cleaned battery using the adhesive film provided.
Activate Bluetooth on your smartphone and then open the App. Bluetooth search mode is not required.
The transmitter appears in the list display. You can assign a name, an image and the rated voltage to the transmitter.
The full capacity and usability of the battery can be guaranteed only at a steady, positive state of charge.
The positive state of charge also prevents any potential premature damage or failure. We recommend recharging batteries as follows: when a 6V battery drops below 6.2 volt, a 12V battery below 12.50 volt and a 24V battery (series connection utility vehicles) below 24.8 volt.
To obtain a correct measurement, the vehicle should not be moved for a period of at least 3 hours. Connected consumers, such as light and vehicle electronics, must not be in use.
| deeply discharged | partially charged |
| discharged | charged |
