![Tip of the month for April 2016 - How do I measure the battery level of my trailer? Tip of the month for April 2016 - How do I measure the battery level of my trailer?](/fileadmin/content/wissenswertes/16_04_05_Tipp_des-Monats_Banner_April_EN.jpg)
How do I measure the battery level of my trailer?
For vehicles and trailers with a fitted battery, e.g. tippers, Senkos, etc., it is a good idea to check the battery level every now and then to prevent unexpected failure of the battery, the starting relay and other sensitive electrical components.
![](/fileadmin/content/wissenswertes/tdm-batteryguard-divider.jpg)
1. Download the app
It's very easy to operate the Battery Guard with a smartphone and an app. The "IntAct Battery-Guard" app can be downloaded from the AppStore or from Google Play free of charge.
![Batteryguard App Batteryguard App](/fileadmin/content/wissenswertes/tdm-batteryguard-smartphone_app.jpg)
![Connect the Battery Guard Connect the Battery Guard](/fileadmin/content/wissenswertes/tdm-batteryguard-connect-to-battery.jpg)
2. Connect the Battery Guard
The Battery Guard is simply connected to the two poles of the battery.
![Display of the battery level Display of the battery level](/fileadmin/content/wissenswertes/tdm-batteryguard-guard_on_battery_with_smartphone.jpg)
3. Display of the battery level
The charge level can now be measured at a range of up to 6 metres via Bluetooth.
![Battery monitoring at trailer Battery monitoring at trailer](/fileadmin/content/wissenswertes/tdm-batteryguard-car-with-trailer_int.jpg)
By the way: The application can be used for all batteries with 6, 12 and 24 volts.
The Battery-Guard can also be used on other batteries, e.g. in cars, caravans, trucks, motorcycles, etc. ... The Battery-Guard is therefore a practical aid for all trailer and car owners.
![Battery monitoring Battery monitoring](/fileadmin/content/wissenswertes/tdm-batteryguard-picture.jpg)
![](/fileadmin/content/wissenswertes/tdm-hr-yellow.jpg)