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Powering A Freezer On A Trailer While Traveling

Question:

Hello, I pull a trailer with a freezer and would like to keep it running during travel. Would I be able to do so with an inverter connected to the running car battery? If so, what size would be needed? The freezer is a 700-watt freezer, pulling 3 amps. Are there videos or diagrams showing the connections needed? Thanks!

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Expert Reply:

It is possible to power your freezer but you wouldn't want to power it using your vehicle's battery as you could end up damaging it. I recommend a larger deep cycle battery like the Go Power Lithium RV Battery # 34282738 since the Go Power Industrial Pure Sine Wave Inverter # 34278156 is going to keep draining the battery until you turn it off and your vehicle's battery isn't meant to be drained down.

You can use a DC/DC charger like the Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1225D to charge the battery powering your freezer while you drive so you don't have to worry about it being completely run down. You'll also want a fuse kit to ensure the safety of your equipment, you can use the 30-Amp MIDI Fuse Kit for Redarc In-Vehicle 12-Amp BCDC Battery Charger Item # RED86FR.

I've attached videos of installing the battery and Redarc battery charger for you. As for wiring the inverter you'll have a positive (red) and negative (black) terminal on the side of the inverter that you need to hook up 6 to 8 AWG wire (depending on the distance between the inverter and battery) to using ring terminals and attach them to the deep cycle battery positive and negative terminals. The inverter has 2 GFCI AC outlets that will allow you to plug the freezer right in.

Wire Gauge Length Chart
Wire Gauge Length Chart
(click to enlarge)
expert reply by:
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Kevin C

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