I have the non hybrid and never had battery issue. Also, I don't have any modification, and my RX 350 survived this long frigid cold winter even when it was parked in the garage for 12 days straight without starting or moving the vehicle. Other owners' experience with the non hybrid might be different, but I hardly ever hear from them in this forum.

 

As with the Cabin Filter, the most difficult task is to make everything fit back into the glove box/console tray when it is emptied!