I replaced mine with a XS-POWER D4800. I also have 2 lithiums in my trunk XS-POWER Titan8. I run a lil over 6kRMS across 4 amps. Same stock alternator and I hardly have any voltage drop. ⚡2018 2.0T Touring with 52K miles. Battery still going strong (last tested in August at 90%) after 4 years 8 months. Has anyone replaced the battery with an AGM? What's your experience?