It would be nice if you can come back to the thread later and confirm that the H8 works with no problems. I have 4 of these H8's on my bimmers (yep, two per car). One car has had the pair of batteries for about 3 years, zero issues. I always have to keep mine topped off using a Ctek charger. It would just be very convenient for me if the rangie can also accommodate the H8. You can't beat the price, availability and quality of the H8.Besides the low-battery life while listening to audio (engine off) I've had some odd events (e.g slow cranking/start, lights flickering, DVD player tanking the whole main screen, etc) which point to a crapped out battery. The Noco charger has restored some life. I put it on a conventional charger for a few hours - that killed it. Conventional chargers are nasty. Anyway, I bought an H8 Everstart from Walmart, charged it with the Genius Noco and is going in tomorrow. H8 is a pretty big battery - I'll do a voltage drop test on Audio only& I bet it's good for a few hours of use.