Have RV Questions? Ask an RV Mechanic Online.
Are you plugged into shore power? And can you determine where the "click" is coming from? How old is the battery and most trailers with slides need at least two batteries. Slides consume a lot of power and one is not usually going to get the job done. Surface voltage on the battery really doesn't tell you the condition. Load testing is the only real measure of the battery's ability to deliver actual amps that it is rated for. If yours is over 3 years old there is a good chace it may be failing.