100w portable solar report
Yesterday March 8 we had full sun here at Roosevelt Lake, AZ. My two Group 27 batteries read 12.52v at the start of the day, measured at the batteries with the Turnigy WattMeter. I used it to collec...
Forum Discussion
Good news on that controller RJ is using. I got a similar one (CMTP02) last year based on an RJ "find".
Only got to use it for a week in September before putting away the solar for the season, but it worked very well, going to 14.4v and holding there.
We had some fun on here about it being a "fake MPPT" which it is, and I call it my "RJ Special", but it is a good PWM controller and I am glad to have it.
I now also have a more expensive ( $34), fancier controller (Solar30) with an adjustable high set-point, an ammeter, and an AH counter built in, that I can make go to 14.8v which I need instead of 14.4v in my latest set-up. So my RJ special will be a back-up in case I fry the Solar30.
I have no problem with the controllers having their temp comp built into the unit, since I mount the controller in the same compartment as the batteries anyway.
Only got to use it for a week in September before putting away the solar for the season, but it worked very well, going to 14.4v and holding there.
We had some fun on here about it being a "fake MPPT" which it is, and I call it my "RJ Special", but it is a good PWM controller and I am glad to have it.
I now also have a more expensive ( $34), fancier controller (Solar30) with an adjustable high set-point, an ammeter, and an AH counter built in, that I can make go to 14.8v which I need instead of 14.4v in my latest set-up. So my RJ special will be a back-up in case I fry the Solar30.
I have no problem with the controllers having their temp comp built into the unit, since I mount the controller in the same compartment as the batteries anyway.
