Weldman
Herd Master
Pretty simple, figure out what you need for power, most places around 10kW for a house then you would size your battery for how much power you would need based on 4 days without solar and how much power you use a day. Now remember a battery amp hours is only good up to 50% before you hurt the battery from draining too much from it, 80% SOC (state of charge) is best number to aim for to not go below with FLA (flooded lead acid) and anything below 68°F your battery capacity drops 1%. Batteries come in nominal voltages 2, 6, 8, and 12 when in reality if a battery says 12VDC on your meter you are below 50% SOC, if you are up to 12.7VDC then it's full.
What does this have to do with anything does in here, look at everything that requires a battery and when it's freezing you know now why it won't crank that tractor besides the molasses for oil, take the battery inside warm it up and then bring it out to crank on it.
Now where was I....
What does this have to do with anything does in here, look at everything that requires a battery and when it's freezing you know now why it won't crank that tractor besides the molasses for oil, take the battery inside warm it up and then bring it out to crank on it.
Now where was I....