Quote:
Originally Posted by Robaroni
Even if we up his battery to 12v at 30 aH he still has 360 x2.5 hours a day or 900 wH. He probably has easily twice that where he lives, so I'm being very conservative. 25% of 900 wH will give him 225 wH for his 5 watt load which is over 4 days without charging.
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You lost me with the math. With using your recommended 25% of capacity of a 12V 30Ah battery, I get 90 Wh, only 12.8 hours for the 7 watt LED that he wants to use.