Hey all, as some may have read in the "what has made you angry today?" thread, my alternator regulator packed up on the way to our camping trip over Easter.
Sub fuel tank, handbrake and battery warning lights all illuminated on the dash (for anyone troubleshooting this same problem in the future).

I've looked up in the service manual that the TD42 GU III has a 100A alternator (if I've read that correctly).
I have a dual battery setup with a Century N70ZZLB MF main battery and a Century N70T deep cycle battery.

My question is this; should I stick with the factory alternator or buy an upgraded one that might cope better with two batteries?

I've read on here, and been advised, that a DC charger would better suit the deep cycle aux battery.

Let me know your suggestions.