Hi,
You misunderstand. If I did not have my existing inverter I would have a 24 or 48 volt battery bank. That has almost NADA to do with panel voltage which is just a matter of choosing an appropriate charge controller. However the biggest controller I'm aware of is the PT-100 with 100 amps of capacity. That limits the solar "farm" to 1200 watts. If you want more--then you get into the game of having more than one charge controller OR going to a higher voltage battery bank.
ToyHauler wrote:
pianotuna wrote:
Hi,
It would cost me a new inverter to move to 24 or 48 volts.
As it happens, the Magnum PT100 IS an MPPT unit, but that is not why I chose it. I chose it because it can handle 100 amps. It costs about $800. usd.
ToyHauler wrote:
24 volts is more efficient than 12 volt and mppt gives an advantage over pwm significantly over lower voltages all the way. Its a win win no matter what your preference.
So I would argue over your lower voltage preference
Your being cheap
The benefits you get from higher voltage and the benifits from the amperage you get from the controllers. negates the cost. IE your being a cheap ass at a deficiency.
I have the very same inverter as you and I run 24v panels.
I see higher charge amps using the 24v than I ever did with 12 volt with as many watts per panel bank. Almost double in fact.
