Overall it's really useful to be able to see the voltage at the battery and the current coming in and going out at an instant. The next step would be another set of meters showing the panel voltage and current then add the power harvesting MPPT circuit and then another two meters showing what's coming out of the MPPT circuit and into the battery.
These Harbor Frieght meters are a great value. If you burn one up you're not so upset afterwards.


Also I got lucky enough to be included a Sparkfun video blog / market resarch thing so supposedly I'm going to be able to keep the video camera they send me. Can't say no to free stuff.
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