Solar panel overkill?
I have been mentally designing a solar system for our small class C. I have 2 6 volt GC batteries and have no extra room to add more. I was originally thinking of installing a 24V 235 watt panel fro...
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BFL13 wrote:
Probably is overkill but can't hurt to have more solar. $150 is great price. The trick is going to be the controller.
You could have two $102 20a Eco-Worthy controllers, (42Voc limit each) in parallel on the battery bank. I don't know the specs on the Tracer for max Voc intake rating--be careful of that. It costs about twice the Eco-W so that is a possible break-even, if the T can do both panels.
Going to the usual suspect higher Voc limit MPPTs for a single controller would run you $300 or so.
Was thinking of paralleling 2 MX Solar 235 watt panels that are actually $158.00 each (was rounding down to make myself feel better). With the remote meter the 40 amp Tracer is $265.99 on eBay. The tracer specs are as follows:
Model
Tracer-4210RN
Rated system voltage
12/24V auto work
Rated battery current
40A
Rated load current
20A
Max.battery voltage
32V
Max.PV open circuit voltage
100VDC
Max.PV input power
12V 520W? 24V 1040W
Self-consumption
<10mA?24V?
Charge Circuit Voltage Drop
?0.26V
Discharge Circuit Voltage Drop
?0.15V
Communication
TTL232 / 8 pin RJ45
Temp.compensation
-30mV/?/12V?25??
