<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Pat McCreight:
FWIW, I seem to end up at 30% quite often. I don't know how reliable the usage gauge is. </div></BLOCKQUOTE>
Indeed. The science behind battery gauges is pretty weak.
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">But like you said, you can always utilize your van battery if you run out. I think you just hook up the jumper cables and it feeds off of it...I should really know how to do that in case it happens. </div></BLOCKQUOTE>
If possible, I would go through the cigarette lighter socket. That way, it is fused and much safer than going through the battery cables and risk shorting something out that way. The hitch is if the socket is switched and not on when the car is off.