In that case someone really should tell Louderisbetter150, long420 et al from floridaspl.com to stop wasting their money! (What's a 4-letter word for gullible or idiots?) Though that advice matches their street-use advice of it's "better to get more batteries than an alternator big enough to handle the load"!!!
Luckily I'm in Vic - 15,600km away (9,700mi).