I was hoping to use this unit to service and condition a fully charged battery on a rarely used 1998 C1500. I mounted the solar panel outside of the windshield and pointed it south at an angle of about 45 degrees, giving it unobstructed sunlight throughout the day. Unfortunately, I wasn't able to notice a big difference in battery performance during operation. Even with the battery disconnected from the main cables, if I left the truck idling for about 45 days, I had to use a regular charger to