Power Backup?

[thresher]

Thinking of adding a backup power unit to the essentials of the tank. Most likely just a MP40. I'm void of any knowledge about electrical current draws, etc. Can something like the following be used as a backup? Is their a way to have it automatically turn on in a power failure situation.
Amazon product ASIN B07D29QNMJ

 

[mrlavalamp]

APC has some decent battery backups that do what you want. Their website also includes calculations for how long they will last based on what load you hook up (an MP40 consumes less than 38 watts).

 

[mdb_talon]

It will work for relatively short periods of time. One mp40 it could run for between 5 and 20 hours depending on setting of mp40 and how many watts it is actually using.

I

 

[Jimbo662]

After the Texas Snowpocalyps I bought the Explorer 500. About 3 weeks ago I lost power for an hour and a half. I've got 3 IceCap 2ks running through the Hydros Engine. I connected the Engine's power cord to the Jackery. It used 2% during that time. At the same time my phone was almost dead so I was able to charge it and the light on the end came in very handy. I also bought the solar panel to charge it just in case...