Helping a buddy installing his Lithium batteries
He has a lead starter and Optima bowtruster and gel house, charge by alternator
is split via an Victron Argo FET between the 3 banks. Lead starter will be deleted. He keeps the Gel house as this can also start the engine
(hybrid gel, so new starter and backup house) and add lithium
house. So the Argo FET will be connected to the gel (starter and backup house) and the Optima bowtruster battery
To charge the LFP and limit the current
a Victron DC2DC Orion Smart charger
Where do I connect the DC2DC, before the Argo FET or after to the gel battery
? I would connect it to the Gel. But the alternator
doesn‘t see the starter gel as ArgoFet is in between, so I expect the DC2DC cannot work
properly. Is this a problem…never had a setup like this?
He wanna have the DC2DC.
I told him the DC2DC is actually not needed as he has a 115A Mitzi alternator which has its own internal temp regulator
, so it won‘t overheat, as it’s throttling down on its own. Directly Connected to the Argo FET as the gel house before and when the BMS is switching charge off (via a relay) the alternator will still see the ArgoFet with 2 other lead, so no problem. Main charge source is solar
, alternator just has to work