Cole Hersee 48530 Smart Battery Isolator, 200 amp, 9-16VDC

Fuse both sides of the isolator: one kit at the starting battery and one at the auxiliary battery bank. Each kit is an ANL fuse block with a Blue Sea 200 A ANL fuse.

ANL link bar: Link Bar, LBJ-2, by BEP $10.00 each

Connects the auxiliary-battery 200 A ANL fuse kit directly to the inverter's ANL fuse kit, saving a cable. Size both the inverter and auxiliary battery cables for the inverter's load. Linking diagrams: BEP catalog, pages 38-39 (Connectors & Insulators).

Fuse kits, 200 A MRBF (x2): MRBF fuse kit, 200 amp (fuse and fuse block with cover) 2 per unit, $43.00 each

A compact alternative to the ANL kits: one at the starting battery and one at the auxiliary battery bank. Each kit is a Blue Sea MRBF terminal fuse block with a 200 A MRBF fuse, mounted right on the battery terminal.