Hi all, so I'm about to harvest my first indoor grow and I have been extremely fortunate to not have lost power once this summer.

For my next grow I plan to purchase a battery back-up that will be attached to just my light and exhaust fan.

Can anyone give some advice on brands, power needs etc.

I'd like to get something that will keep power for 48hrs to the following:
shio HILUX GRO BULB CMetal Halide MH 315W / 942 / AGRO 4200K
4in Infinity Speed ECM Fan w/ 4in RC48 Activated Carbon Filter

My area is pretty stable for power, but with a bad storm, about 48hrs is the max time I've faced over the years. and that is enough in veg or flower to stress beyond comfort.