Checking the solar input works is a simple process with some cardboard .
12V SYSTEM
It ’ s time to clean the air-conditioner filters .
Give the awning a little TLC .
If you ’ re relying on your 12V system for power while touring , it ’ s well worth performing a health check of your batteries before leaving home . Most modern RVs are fitted with some form of battery monitoring system ( BMS ) that allows you to check your batteries ’ state of charge . Older RVs may not have a BMS , but will generally have a 12V display of sorts .
Start by recording the battery voltage without any accessories switched on . Then switch on some items , like the water pump , lights and TV . Observe the 12V display to see how much power draw these accessories are having on your batteries .
If the reading is any lower than 12V , it may be worthwhile removing the battery and having it load-tested to determine the battery ’ s state of health .
Testing a solar system is also a simple process . Record the battery level on the display before covering the solar panels with cardboard . Then re-check the 12V display to confirm there ’ s been a drop in the input performance . Charging should resume once the cardboard has been removed .
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