Solar voltage help...
I just connected my solar kit (160w cmp12 controller)and the voltage while connected to the rv batteries reads 16.55v. Is this normal or too high? Sorry but im new to this.
Forum Discussion
red31 wrote:
The manual for the newest generation of the sunsaver 10 shows the charge profile like this.
14.4v abs, 14.9 equ, 13.7 float, equalize every 28 days for 3 hrs (jumper set to flooded).
The older manual suggests 12.5A max Isc so it would work with 160 watts.
Same exact drawing in the manual for the $40 LandStar PWM controller line. (and for the other EP Solar lines AFAIK.) Funny that they have the same guy doing their manuals as MorningStar. Wonder who makes the MorningStar controllers--same factory as LandStar? I don't know.
You do get Isc so if that is 12a, (you need a controller with 20% margin over panel rated Isc) your controller needs to be 15a
Actually, 160w should have Isc of 160/130 x 8.2 = 10a so add 2 and you need a 12a controller but the next size up is 15.
IGNORE all these people saying you should have a 10a controller.
RJ is quite right that you can buy a perfectly good 15a controller on ebay for under $20. Just don't believe the "MPPT" on any of those if they claim that feature--they work as PWMs. (real MPPTs even on ebay are more like $100 on up)
