Quote:
Originally Posted by gauthig
With stock Harris batteries, I ran down to 11.1 by 4:00am. The furnace would not ignite anymore. The blower does take a lot of power. Temp was only 40 outside so I was not a constant run.
Switched to two good deep cycles and still had 11.6 in the morning and everything is running great and I powered up the generator at 9:30am.
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Note that according to "The 12v side of life", 11.58v is only 20% capacity left. For best battery life, you shouldn't exceed 50% discharge. That is 12.06v.
Google "the 12 volt side of life" for more info.