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originally posted by: Mandroid7
Are you sure you are quoting the 65 watts using the actual draw and not the output equivalent?
originally posted by: makemap
Best way to save energy is to not use energy. Have you suggested using wind power for winter season? There are also windy times during summer, you can take advantage of that.
They should do a combo between wind and solar power. That would be one of the best energy.
originally posted by: shawmanfromny
a reply to: makemap
AGREED. You can buy a solar powered LED security light on Amazon for $30-$40, that will charge even on overcast days and provide you with near 450 lumens. I have one mounted on my shed in my back lot and it's bright enough for my needs and stays on the entire night, until dawn.
originally posted by: moebius
a reply to: VictorVonDoom
65 Watt * 16 h * 3 = 3120 Wh energy
You get Ah by dividing Wh by battery Voltage
And as mentioned already a 65W LED will consume about 10-15W
Sizing Your Battery Bank
The exact math for sizing your battery system is based on your daily power usage and the battery type. Based on usage of 10kWh per day, here are some examples:
Lead Acid Sizing
10kWh x 2 (for 50% depth of discharge) x 1.2 (inefficiency factor) = 24 kWh
10kWh x 1.2 (for 80% depth of discharge) x 1.05 (inefficiency factor) = 12.6 kWh
Battery capacity is specified either in kilowatt hours, or amp hours.
For example, 24 kWh = 500 amp hours at 48 volts → 500 Ah x 48V = 24 kWh
It’s usually a good idea to round up, to help cover inverter inefficiencies, voltage drop and other losses. Think of this as the minimum battery bank size based on your typical usage. You may want to consider 600-800 amp hours of capacity, based on this example, depending on your budget and other factors.
Battery banks are typically wired for either 12 volts, 24 volts or 48 volts depending on the size of the system. Here are example battery banks for both lead acid and Lithium, based on an off-grid home using 10 kWh per day:
For Lead Acid, 24kWh is equal to:
2,000 amp hours at 12 volts
1,000 amp hours at 24 volts
500 amp hours at 48 volts
originally posted by: dragonridr
a reply to: VictorVonDoom
65 watts is way to high should be less than 30 for 250 watt led equivalent. I used one that draws 27 watts for an outside pole. I bought 150W Off-Grid Solar Panel Kit for 280.00 and it works just fine.
PS it works out to 450-Watt Hours or 37.5 Amp Hours of charge per day.
I have a 65 watt 110v LED bulb
If you want to jury rig something, you can always count on a Redneck.