Saturday, May 25, 2019 at 20:23
G'day Brian DJ
I purchased an Ecoworthy solar reg which has a clear easy to read and programme screen. It can handle 20 amps and 300w input when running a 12v
battery. Since most panels do not put out their stated/rated current you are
well below that. The reg can be used for either 12v or 24v systems, settable. Max panel voltage is 50v input.
Since it has 50v solar input I had used two folding panels in parallel 18v to 20v, but now in winter when the sun is less I have both panels in series, ie, double the volts to 39v, so it begins to charge earlier and stop later, because of the, now half amps flowing but the voltage is doubled, it gives a decent amount of harvest because the MPPT BULK stage utilizes the voltage/amps available.
Absorb and float stages alter to PWM mode as it claims a more accurate control of set voltage. The Float voltage is settable (very handy)as is the Load cutoff voltage and resume voltage, if you use that feature. Some do use it for fridge
battery discharge level safety At $104 delivered it seemed good value and works
well.
The regulator when using MPPT for Bulk takes advantage of the maximum panel energy which a PWM doesn't do as
well. It has a demo mode which, when pressed, shows the percentage of MPPT gathering above what the PWM mode will provide.
Mine does
test with meters to show, more amps entering the
battery than is flowing in the panel to regulator line. MPPT at work.
Many other regs will probably perform in a similar way, this is just what I have.
AnswerID:
625744