question

ktillman79 avatar image

Mppt 100/20. Not registering solar.

I'm trying connect my 260ah AGM battery and 320w solar panel to my mppt 100/20. It registers the battery but I have 0w and 0v from the solar. I've triple checked the wires are connected properly and the right way round. I've checked the fuse and I've checked the wiring using a multi meter and there is power coming from the panel but the controller still isn't recognising it.

I'm aware it needs +5v above battery voltage to charge but I'd have through midday on a sunny day it would produce that easily.

What am I doing wrong? Anyone got any thing else I can try?

Thanks in advance.


MPPT - Solar Charge Controllermppt smart solarsolarnot charging
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1 Answer
launacorp avatar image
launacorp answered ·

So you checked the PV wires with a Multimeter disconnected from the MPPT? Whats the Voltage then?


If u then connect the pv wires to the terminals an measure the voltage then with the Multimeter in the terminals, what's the voltage then?

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