Can a 12v battery bank be charged with a 24v array?

[no carrier]

Very small system...260 watt array 12v...battery pack is 2 t-105's..
12v...I would like to increase my array to 24v...and leave the battery
pack at 12v..have a 12v inverter..and dont want to buy a 24v inverter...I also have a 12v-24v cc...says its an mppt, but I have my doubts..I can also buy an inexpensive, non mppt for very little...From what ive read, at my wattage, I really dont need an mppt...Although in thewinter, I have alot of tree shade..This is a hobby, I am not about to put alot of money into this...My question is, can I charge my 12v batts with a 24v array?....Thanks for any input....
Dennis

[Mike90250]

You can charge a 12V battery with a 90V panel (yes, them make single panels that are 90volts)

The difference in panel voltage - battery voltage = power lost (vanished)

A MPPT controller recovers this lost power. If you use a 200W, 24 v panel to charge a 12V battery via a PWM controller, you will only deliver about 100 watts to the battery, wasting half your panel power.

PV panels need direct, full sun to work. They produce no appreciable power in the shade.

[Sunking]

Yes you can with a MPPT type charge controller.

[john p]

Do nothing Do not go past go. do not spend the $200. There would be no real benefits to you going to 24v panels.
For what reasons are you considering doing this?
Reducing the shade to zero on the panels you have will give you a far better result.

[no carrier]

Do nothing Do not go past go. do not spend the $200. There would be no real benefits to you going to 24v panels.
For what reasons are you considering doing this?
Reducing the shade to zero on the panels you have will give you a far better result.

Thanks for getting back guys...I have a 15a cc, am thinking about
adding a 3rd panel, same make, same wattage...ea. panel puts out
7.5 amps...thats 22.5 amps..minus 20 percent loss, brings me down to aprox 18 amps...on a 15 amp cc....Switching my array to 24v,
would bring me down to 9 amps...I have the extra panel, so adding another wont cost anything...
Live in So. Cal...Summers I get close to full sun...Winters, the sun is hiding behind neighbors trees...Like I said, this is only a hobby, and
Ill just have to live with the sun-less winters...Altho I do notice that in the shade, my array pulls 2 amps at 8am and close to 6 amps
at 9am...This is without the sun hitting my panels...
Any thoughts ?
Dennis

[Naptown]

sounds like a blocking diode of lack of problem