View Single Post
Old 06-12-2012, 02:36 PM   #2 (permalink)
JRMichler
Master EcoModder
 
JRMichler's Avatar
 
Join Date: Feb 2011
Location: Phillips, WI
Posts: 966

Nameless - '06 GMC Canyon
90 day: 33.76 mpg (US)
Thanks: 186
Thanked 392 Times in 253 Posts
I had similar thoughts recently when I realized that, with a certain amount of effort, I could get my summer average to 40 MPG.

My idea is a two position alternator switch. Position 1 would be "normal". Position 2 would shut off the alternator. The truck would continue to run off the standard battery. A second deep cycle battery would charge the standard battery through a DC-DC converter with about 14 volt output. The second battery would be charged from a flexible solar panel mounted on my topper and charge controller. I would want the deep cycle battery to be sized for four hours at 20 amps into the standard battery. The solar panel should fully recharge the deep cycle battery in 8 to 12 hours.

I don't think I'll ever do it, but it's a great thought experiment.
__________________
The vacuum gauge plus wheel covers helped increase summer 2015 mileage to 38.5 MPG, while summer 2016 mileage was 38.6 MPG without the wheel covers. Drove 33,021 miles 2016-2018 at 35.00 MPG.
  Reply With Quote