Is There Any Type of Battery Backup to Use?

I did settle for the Jackery Explorer and it is a combo UPS/Power Station 1000 WH/$500. Power Backup in less than 20 ms. I'm sure the  average electronics can handle it. $500 USD. Other higher Watt/Hour options available. The batteries are the safer LiFePO4 type.

https://www.amazon.com/Jackery-Explorer-Portable-Generator-Emergency/dp/B0D7PPG25F/ref=pd_rhf_ee_s_pd_crcd_d_sccl_1_3/133-7813644-8093025?pd_rd_w=oknTD&content-id=amzn1.sym.724e1345-13e9-4aaa-ad92-3b2703f86a2c&pf_rd_p=724e1345-13e9-4aaa-ad92-3b2703f86a2c&pf_rd_r=0F4XZ1D8AYKBNAET969X&pd_rd_wg=H0uSl&pd_rd_r=10030acd-006f-4b3c-acba-609d08d0f533&pd_rd_i=B0D7PPG25F&th=1

Y'all are the BEST! I explored this a few years ago and never did anything about it. Now I am armed with great information, thanks to all y'alls generosity with info and your experiences. I have a couple of different ones in random carts and will decide which it will be today!  Thank you, thank you! 

All of my computers and electronics have a dedicated battery backup and surge protection.  The battery gives me a approx half-an-hour of use during power outages to safely save files and properly shut everything down.  I think we paid about $80 for the last one.

It's not a matter of saving work, but keeping the Fiber Optic router going and powering small electronics, perhaps my

13W led desk lamp.

Well I did look at the Ecoflow a bit closer and they  answered my question:

Can RIVER 2 Max be used as an uninterruptible power supply(UPS)?

When your RIVER 2 Max is plugged into the wall, anything plugged into it gets power from the grid, not its battery. If power from the grid stops, RIVER 2 Max automatically switches to its battery supply mode within 30 milliseconds.

A UPS is mainly for having enough time to shutdown properly, not run your computer for a period of time. There are (at least) two types of supplies: the cheaper ones feed the computer from the power supply and just kick in when the power cuts out; the better ones that feed your devices from a battery (the power keeps the battery charged and doesn't run the equipment directly). The latter is better because the devices get constant power, not fluctuations that tend to occur when the power blips.

Then you have the battery "generators" that can run multiple items at once for a period of time. For example, I have a GoalZero 3000Wh home system. 

Generally, I have the UPS to kick in during outages. If it appears as if it going to last, I can switch to the battery generator. 

(I also have a gas/propane generator for other household devices in case of long-term outages.)

I would think portable battery generators could keep you going for hours unlike a UPS.

An example would be this model:

https://www.amazon.com/EF-ECOFLOW-RIVER-Max-Generator-dp-B0B97H2XHS/dp/B0B97H2XHS/ref=dp_ob_title_hi?th=1

So what differences am I overlooking?

Yes, a battery backup/UPS is valuable when power is unreliable, and is standard equipment in businesses where losing a few hours of work could mean a missed deadline.

I have one more reason to use a UPS, and that is to preserve the life of the equipment. Even if there is not a full power outage, invisible power problems such as over/under voltage (different from a power surge) can shorten the life of electronics. Surge protectors don’t address those problems, but a UPS can, if it also has voltage regulation and line conditioning (e,g, noise filtering) features. So a good UPS not only keeps equipment running during an outage, but also feeds it “clean power” (within safe specs including a consistent voltage level). The UPS I use has those features; mine looks a lot like the one in the picture D Fosse posted, it might even be the same model.

Before you buy a UPS, you do want to add up the wattage of everything you plan to plug into it so that you know how much capacity you need. Because that will determine how long the battery lasts during an outage. For example, if your computer, display, network router, etc. add up to 400 watts, and you later add more equipment so it adds up to 800 watts total, the same UPS’s battery will then last half as many minutes during an outage as it did when it only had to provide 400 watts.

Depending on how much equipment you have, it might not be affordable to get a UPS that can keep everything running for many hours. Mine says at current usage the battery will last 73 minutes. I only bring that up because instead of having an expectation that a UPS can keep the computer system running during an extended power outage, for many people it is much more realistic to think of a UPS as a way to allow enough time to save each open document and shut down safely, and then you wait out the power outage.

You will often hear that you should “never plug a printer into a UPS.” This is not always true. I think that advice was given for laser printers, because those have a heating element that pulls too many watts for most affordable UPSs. But if you have an inkjet printer, I think it’s OK to plug that into a UPS because for example my 17" wide photo inkjet printer draws only 20 to 30 watts when it is printing. The real rule there is, never plug anything into a battery backup outlet that would exceed what the UPS can deliver, including its peak wattage. For example, it’s a very bad idea to plug a microwave oven, full-size refrigerator, or anything with a heating element into a UPS designed to keep electronics running.

One last thing to think about: For many UPSs, not all outlets are backed up by the battery. For example, mine has 10 power outlets, but only 5 outlets are backed up by the battery. The rest are surge-protected but are not kept powered during an outage. So I had to pick and choose which 5 devices get battery backup during an outage.

All of my computers, at work and home, have a UPS.  They have saved me many times, as we have frequent power outages, especially in winter.

I even have them for my landline phones and my modems and routers.

Make sure you check the power requirements of your devices and get a properly sized one.

And never use a printer on a UPS.  It uses too much power.