solar calculations to power a squirrel cage fan off of solar and battery

[C_Heath]

Does anyone know a calculation that would give me an idea on the amount of batteries needed to power a 850cfm wood stove fan? I have panels and all the equipment. I am 100% wood burner and had a 10 hour outage last month. I used the generator to keep the fan o. But thought about this during the outage. The fan draws 228 Watts when in operation. It

[Mike90250]

250 watts x 24 hours = 6,000 watt hours. A deep cycle marine battery group 24 size, is about 80Ah @ 12V = 960 watt hours. So it would take 7 batteries to power just that 1 fan for 24 hours. (and that would deeply drain the batteries, damaging them, deep cycle batteries are rated at 50% discharge, so that would be 14 batteries !! )

Personally, I'd look for a smaller, more efficient fan to use for emergencies, that's quite a bit of battery for 1 fan.

[C_Heath]

250 watts x 24 hours = 6,000 watt hours. A deep cycle marine battery group 24 size, is about 80Ah @ 12V = 960 watt hours. So it would take 7 batteries to power just that 1 fan for 24 hours. (and that would deeply drain the batteries, damaging them, deep cycle batteries are rated at 50% discharge, so that would be 14 batteries !! )

Personally, I'd look for a smaller, more efficient fan to use for emergencies, that's quite a bit of battery for 1 fan.

thanks for the math. This fan is pretty powerful. I knew it would be more than 2 or 3 battery

[Mike90250]

Sadly, it's not reasonable to run this fan from a battery. For the cost of 14, $100 batteries, you would be far better off getting a little honda eu1000 generator, and be able to run a few extra items. the 1000 is not likely to be able to run a fridge with anything else, but the 2000 or a clone of the 2000, would be able to most likely meet your needs, Yes, it fossil fuel, but it's the most practical, wait till you figure the space to park and water 14 batteries.