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Post by mreamer on Sept 14, 2017 7:00:45 GMT -8
This is my setup ( ALL Renogy products): - MPPT 30a controller
- 3 12v Deep cycle flooded batteries in parallel, purchased new on 7/15/2017
- 4-100 watt panels
- Digital MeTer
- 1000 watt inverter.
The MeTer reads 70+ volts coming from the panels, but less than 12 volts in the batteries. There is 0 draw from the batteries, nothing is on. My main question is: WHY, with 70+ volts from the panels, would the batteries be SO LOW? Why wouldn't the controller try to charge them faster? I mean, it's as if I have a trickle charger on the batteries! What am I missing? Thanks
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Post by mreamer on Sept 14, 2017 7:15:33 GMT -8
Slight correction: The batteries are NOT Renogy batteries.
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Post by rabird on Sept 15, 2017 7:29:44 GMT -8
What's the amps into the batteries?
the controller output voltage should equal the batt voltage, did you let them drain below 12.0v?
you should have ~30A of charging @ 12.0v with good sun and 400 watts.
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