Battery backup questions

[Marbleyes]

I have an England Stove Works pellet stove
model 25-PDVC
Looking to set up a battery backup for power outages
Also purchased a pure sine wave power inverter
in the manual it recommends a DC circuit breaker be hooked up
on the positive line, close to the battery.
I contacted the inverters manufacturer
all they said was, look on Amazon..... ?!?

Does anyone have experience setting up a backup with
an inverter and a couple deep cycle marine batteries?
Any input would be greatly appreciated

 

[Washed-Up]

Here's a thread on it

https://www.hearth.com/talk/threads/pellet-stove-power-backup-what-do-you-use.168444/#post-2260736