You don't say what year crv you tow. Check your owners manual for specific procedures to be followed before towing each day. We tow a 2010 crv and had issues after long days towing. We installed a switch for fuse #34 which is the clock on the radio. Sounds crazy - but this fixed a known issue where the battery drains after a day of towing. Again, I stress follow the Honda manual instructions and your honda will provide great service. We put the switch in because it is difficult to regularly pull the fuse manually.