View Single Post
Old 09-21-2013, 08:47 PM   #8 (permalink)
JRMichler
Master EcoModder
 
JRMichler's Avatar
 
Join Date: Feb 2011
Location: Phillips, WI
Posts: 961

Nameless - '06 GMC Canyon
90 day: 35.82 mpg (US)
Thanks: 185
Thanked 387 Times in 249 Posts
Get a DC-DC converter for 13.8 volts and put in an alternator ON/OFF switch. Lead acid batteries like about 14.3 volts (varies slightly depending on temperature) to be fully charged, and about 13.8 volts for a sustain charge. Too much voltage is bad for the battery, it converts the water into hydrogen gas.

Turn the alternator on about once per week just to make sure it still works and to top off the battery.

It takes almost a full kilowatthour of power to put enough heat into an engine to do any good. That's enough to drain a good sized deep cycle battery.
__________________
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