14.4 Cubic Feet Off Grid DC powered Chest Freezer/Refrigerator 

There has been a very significant recent freight increase on the Chest Freezers so the price has had to be raised  

Off Grid Operation

A simple solar controller, one or two solar panels and a battery are all that is needed. The battery stores excess power from sunny days to use on rainy days. A single panel should give you 3 days carry over, a double 6. Never worry about refrigeration during power outages.

Dual Chambers for either Freezer or Refrigerator

It has 2 chambers which are Independently temperature controlled. Each chamber can be set as either a refrigerator or freezer. So it can be all refrigerator, all freezer or ½ and ½.

Multiple Temperature profiles for each chamber 

• Refrigerator – Temperature settings 33° - 39° F.
• Root Cellar - 40°-50° F Higher temps than refrigerator supports root cellar food storage or mushroom cultivation. For example, 50° is an ideal temperature to store potatoes.
• Freezer –Stores food @ 0° F/-18° F for best long term food preservation.
• Flash freeze - For maximum food preservation

Ultra efficient - 2x the insulation of normal freezers!

• Insulation is over 4” thick will maintain 0° F even @109° F ambient
• Holds temps @ 0° F for 12 hours w/o any power
• Engineered to optimize DC compressor
• Separate lids for each compartment each with 2 sliding glass doors to minimize air infiltration
• Max power draw 180 watts / standard AC chest freezers use 600 watts
• 24hr power consumption @ 77 degrees ambient and 2 hour draw down 517 watts
• 24hr power consumption @ 77 degrees ambient and 1 hour draw down 708 watts
• 24hr power consumption @109 degrees and 2 hour draw down 900-1500 watts

Power Options

This off-grid chest freezer/refrigerator operates with 12v or 24v DC. This direct current can come from 

• Solar panels 
• Batteries 
• A/C adapter which converts AC to DC.

It can not accept power from an AC adapter and a DC connection at the same time.

Battery Requirements

Deep Cycle Lead Acid batteries are only rated for around 1/3 the life of Lithium Iron Phosphate (LiFePo4). Lithium ion (Li-ion) batteries offer longevity and lighter weight at the expense of increased fire hazard.

The cost listed for the freezer is for the appliance only and does not include the battery, since you may already have a suitable battery.

If you need a battery and a charge controller, there is an option to add a 24v battery to your order. There are 3 sizes.

Battery Charging

In general there are two ways to charge the battery: from A/C power or from solar panels

A/C Power

If you want to use the grid or a generator to charge your battery you will need an appropriately sized AC charger for 24 Volts. The charger converts AC (alternating current) to DC (direct current) for the battery. Setting up your freezer to be charged this way will still allow your freezer to run many days between charging.

Solar Panels

Charging from solar panels has the advantage of keeping the battery topped off and your freezer running even during prolonged grid down situations. You will be sure your freezer will stay operational regardless of duration. It also hedges inflation risk by securing electricity for your freezer/refrigerator from the sun.

To use solar panel(s) requires a solar charge controller to convert the variable higher voltage power output from the panel to a uniform, appropriate charging voltage. You will also need a solar panel connection kit for the disconnect, fuse, and lightning arrestor for the panels.

The number of solar panels dictates how much power you collect in a day, and the battery size dictates how much power can be stored on an ideal day.

• 2100 watts/day - 1 solar panel (2500 watts 100Ah 24v battery)
• 4320 watts/day - 2 solar panel (3750 watts 150Ah 24v battery)
• 6480 watts/day - 2 solar panel (5000 watts 150Ah 24v battery)