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Anyone know of a solar charge controller that can supply power both day and night? It would achieve this, I imagine, by having 2 batteries, one not charging during the day while the other one does

Preferably a cheap one or DIY. It doesn't have to handle more than 1/2 amp, I just want it for some LED lighting in my garage
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>just posting this in case I forget this idea in the morning

Maybe I could just have it run directly from the panel when the lights are, using a mosfet or relay to control disconnecting the battery. . .

Though I'm using an ATtiny and motion sensor and I don't want the AVR to lose power. I suppose a large enough cap would supply enough power during the transition
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>>1210525
Typically, people just run the load from the battery while it's charging.
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>>1210533
This. Cars do that all the time. Have the controller directly wired to your battery and it won't power off
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>>1210533
You can't charge and discharge a battery at the same time. There must have been a controller, pwm or something. Or drawing from the charger simultaneously, which is harder to do with a panel because the battery will draw all the current unless it's completely charged
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>>1210949
At the battery, power is power. The load doesn't care whether it's coming from the battery or the charger. You do need a fairly dumb float charger/controller to pull it off.




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