The power inverters that convert 48V or 52V ebike batteries into 120V AC are common and well understood. However, they are not well known.
For food storage, most people want to have access to a refrigerator or freezer. Of course cans of food are a vital addition to any preparedness plan, as is a propane barbecue, which does not rely on grid electricity. That being said. Imagine your home has been devastated by flooding, and after it recedes, you must decide what to buy with the insurance check. I now believe a chest-style freezer that is rated to be very efficient is a very useful option.
If you have no back-up power, then over the course of the next few days, the frozen food will thaw out and should be cooked and eaten rather than allow it to spoil. Food in a chest freezer will last longer than a cabinet-style kitchen fridge/freezer. Once the frozen food is consumed, you can use any available power to run it as a fridge, with the temps adjusted to 40F.
If running off of a 48V bank of deep-cycle Flooded Lead Acid / FLA, there are charge control units that are readily available which can run off of a small solar panel array.
"2 Solar panels to run old freezer after hurricane"
https://endless-sphere.com/forums/viewt ... 41&t=89525
My first question is...if we have very small loads (no A/C, no TV, very small fridge, etc) then...I am sure it is possible to run off of a large ebike pack. Of course we can charge laptops, 18650-cell flashlights, and cell-phones off of ebike packs through a DC /DC power supply (I have a 12V output unit, plus 5V USB).
If we are running a small fridge to keep precious food from spoiling just a few days, using an ebike pack...will adding one or several large capacitors to the fridge compressor help on start-up?
If yes, what are the best bang-for-your-buck large capacitors (model numbers), and where would we attach them?