Lucky for me, I bought a modified sine wave years ago thinking I’d use it camping in the car, and never did lol. So it’s brand new, ready to go in. Not as nice as a pure sine wave inverter but honestly I won’t be running much with it. Currently just have lights to power, fridge when it’s not on propane, and will eventually get some more small stuff to put in but no major electronics like a TV or computer. The modified sine wave should do great, we will see.
Just to be clear. Do you plan on running your fridge off a battery and inverter ?
How many amps does your fridge draw ? How long do you think it will run ?
You can only safely deplete a deep cycle battery 50%. From 12.6v down to about 12v. Once you repeatedly drop below that mark you begin to shorten the batteries life.