Report Best alternator setup with lithiums? in Boat Equipment Posted September 23 Hi all, Thanks for all the responses, appreciated. After doing some more research I contacted Sterling who advised to have both alternators go to the starter battery then attach their 120A DC-DC charger at a cost of £717...bit harsh. Anyway it got me thinking and I found this Renogy 50A DC-DC charger with MPPT for £230 . So maybe I could attach one alternator to the start battery and the solar cables to the DC-DC charger (saves getting a a separate MPPT) noting that the max solar for the system is 660w, which is fine with me as I'm looking at about 600W. After reading the renogy manual, a downside I can see is that when the sun is not around and I need to start the engine to charge the lithiums, I believe I'll only ever get about 25A from the alternator as opposed to about 120A from the sterling DC-DC charger... OR Maybe I simply install the renogy 60A DC-DC charger between the starter and lithiums and keep the 660W solar on a separate system, atb least I'll get about 60A from when I charge the lithiums via the engine...but do I connect 1 or 2 alternators to the start battery??...hmmm Thoughts? Cheers!