Im concerned about not obtaining full charge efficiently due to diode isolator voltage drop. Does either of the Hellroaring isolators have this effect?
No. Both of the Hellroaring BIC-75150 and BIC-75300 isolators use solid state switching technology, not just simple diodes. When your auxiliary battery reaches full charge, you can expect less than a 0.005 Volt drop! It is often less than the voltage drop across the wiring used to connect it! On our test vehicle, a 4×4 suburban, the voltage drop at full charge measured about 0.001 Volt across a BIC-75150. See No diode effect!
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