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landyacht318's avatar
landyacht318
Explorer
Oct 12, 2012

Specific Gravity varied widely after topping up.

The other day I checked my 9 month old Crown batteries and found the plates exposed slightly on a few cells and cursed mightily. I hadn't checked them in about 3 months. I covered the cells with di...
BFL13's avatar
BFL13
Explorer II
Oct 28, 2012
I found that Voc didn't match up with rating very well compared with Isc. They have different temperature co-efficients, so I was getting full Isc but lower than rated Voc.

The only way I know to benchmark my solar is that I know it gets Isc at high noon pointed (at 13.5v or below on the IV curve). If it didn't, I would say something is wrong.

You would need a similar known target for when it is working right with your set-up.

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