I've been thinking and I'd also like some type of meter that measures how much power the solar panel is generating, and log how much it has generated. Basically, I want a watt hour meter.
I did some googling and found this meter:
Digital DC Ammeter, Amp Hour Meter, Watt Hour Meter
It looks like a very nice package. I'm not too fond of the price though haha. Still looking... ideas are appreciated.