Friday, Mar 18, 2005 at 20:57
Steve Cobber,
The quoted figure of 3.5 amps is an average draw across the day (I've got a Waeco CF80 and have investigated this). Thus it will draw 24 hours x 3.5amps, equals around 84 amps per day. Waeco are pretty conservative about this and it may draw a little less, but at least 65-70.
I've got a Lifeline AGM Battery (supposed to be better quality than Fullriver but time will tell) and whilst it charges quickly, it never gets totally full quickly. Get used to running your engine 3 or 4 times a day to keep it reasonably charged unless you go solar. Letting it drop to 30% charged and then going for a drive to pick it up will fungool it real quick. Use a multi meter and
check it regularly, if it hits 12.1 volts it is at about 50% and should be recharged in the interest of battery life.
Solar on the other hand keeps it full all day long and I find by morning it is still showing 12.4 volts or about 80% charged.
I started out with your theory, but soon invested in solar. I find a 64 watt Unisolar panel works
well for me. With a decent regulator and cabling, $700.
Hope this helps,
Jim.
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