I was undecided as to whether to upgrade to a L2 charger, but did go ahead. One benefit is that if I run errands in the morning, I can do a quick charge and be fully charged for any subsequent trip(s) later that same day. Also, some power companies provide time of day pricing with the lowest rates late at night. L2 charging can take full advantage of that. These are the two of the potential benefits that L2 charging may offer.I've been doing fine / satisfied with the level 1 charging, but given that my garage is already wired for this it seems like too good of a deal to pass up.