path1,
Mr Wiz brings up an important point. I mentioned abs voltages, earlier. If the wire run from converter to bank is long, and of too small a gauge, you will see considerable 'voltage drop'. So even if the converter is putting out say 14.4v, only say 14.0v may make it to the batteries, thus extending charge times considerably; not to mention possibly chronically undercharging the bank, which leads to sulfation and progressive capacity loss.
So proper wiring is an essential element to any good charging system. And as stated, connecting a portable charger (or power supply) directly to the bank can often be a more desirable "fix" than re-wiring, or relocating the converter closer to the bank.
