Sounds like you've got the same problem a lot of us had and it's time to replace your fan. Something causes a very high resistance (bad bearing or just poor windings in the fan motor) that causes the fuse to pop. Once it gets bad enough to pop the fuse the first time, you have to replace the fan or you'll just end up constantly popping the fuses.

The Chrysler dealer part number for the fuses is posted in the post right above yours (part number 05135816AA).

Here's a link to some on ebay for $8.50 shipped if you want go that way: EZGO 50 AMP FUSE FOR POWERWISE CHARGER IMPROVED | eBay

You can find a fan on ebay as well for $120 instead of the $400 the dealer wants for it.

Good luck,

Jon