Originally Posted by Golfnbike13
I'm just thinking to power a TV, radio, keurig, various chargers (phone, laptop, etc).
Just have one 12v deep cycle battery now. At some point will add a second. Don't have a generator yet but shopping for a 2000 or 3000w.
Well, a 1000 watt inverter and 2 batteries (one for now - ok with a small generator) will do everything except the coffee maker.
I have a 2 battery setup (150AH) and power everything except the air conditioner, microwave, coffee maker, or electric fry pan. Boondocking requires a "gas" solution for making coffee and cooking. I use a cowboy coffeepot, drip funnel, or french press (depending on mood) for coffee.
You do not want to know what you will need to run the coffee maker.
A 4 deep cycle bank of batteries and a 2500 watt inverter will work; anything less will not get you through the night. The problem is the power drain on the batteries powering that coffee maker.
The problem is the heater in the coffee maker. Most are 1500 watts; or 140 amps off the battery. 140 amps will suck the voltage of a single battery below 10 volts just powering it up. You would need to spread that demand over 4 batteries to keep the amp draw per battery around 25 amps each.
The reason is the Peukert Effect of amperage demand on battery capacity.
See article and graph attached.
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