Skip to main content


Showing posts from June, 2015

The Solar saga continues

My main goal here is simply to be able to run a Thermoelectric cooler continuously. The cooler draws about 3.8 amps when running. Normally (a subjective word in itself), I'd estimate the cooler has about a 50% duty cycle. It cuts in alot during a hot day but not so much at night. Therefore, my calculations will be based on an estimated average current draw of 2 amps. For a 24 hour period, that's 48, so let's just go with 50 amp hours for each day of use. My Battery Bank is 230 amp hours, but you don't want to run it down much past 50%. Therefore, we're looking at about 2.5 days of use before some sort of charging is needed.

 Here's the cooler I'm using. It's a little better than the regular Canadian Tire variety. Most of them only cool to 20c below ambient...not good enough. This one cools to 30c below ambient. It also has a 7-position thermostat that cycles it on and off.

Here's my 2 x 115 amp-hour Deep Cycle Batteries. To help achieve the off-gri…