Outer Limits 4x4 Board

Using a three battery system can work very well if using one battery as a 12V cranking battery and two in series 24V as an auxiliary battery by using a Sterling DC/DC 122450 battery charger which charges from a 12V battery to a 24V battery with the same charging algorithms as a mains charger battery ...

Both batteries you have are lead acid batteries and cranking batteries are normally open flooded wet cell and they would charge at 14.7-14.8V . The AGM Deep cycle is a sealed battery and it is imperative to know what it is as there are two types of AGM batteries with ones that are high resistance ...

All Heui jack parts ar rediculously expensive and even then they cannot totally guarantee you will not have more problems. The Heui system works fine for Cat but Isuzu no way . If you go on ebay ATM there are injectors there cheap and if they are replacement they should be good. Dont keep chasing ...

PBB1Z2
The alternator to battery charger that you mention has two new models 80A and 130A that are a lot smaller than the old style which is 280x250x70 but they are still there in 90A 160A and 210A.
Wheeley