Best auto trickle charger on the market hands down, and I've tried them all
https://www.amazon.com/OptiMATE-Ampm...XCE/ref=sr_1_2 Battery tenders have failed me many times and aren't nearly as sophisticated
These cars are notorious for killing batteries and juice required to crank over a 6.2L is significant. If you take shorter trips or the car sits for several days yes you need one. I literally keep mine in the trunk and never remove it, all I have to do its plug it back in after a drive