mppt vs pwm

Bedlam wrote:

pianotuna wrote:
I agree 24 or 48 volts would be the route to follow for the battery bank.

Method 3 on the smart gauge site for the wiring. I.E. equal length cables from all jars to a buss. correctly interconnecting multiple twelve volt batteries

With 24 batteries that works out to six "strings" of four jars, assuming each jar is 12 volts. Voltage at the buss is 48.

I'm still trying to find a good price on better controller, but am trying out cheap ones while I wait for a deal.

http://www.ebay.com/itm/10A-20A-30A-12V-24V-Auto-Switch-MPPT-Solar-Panel-Regulator-Charge-Controller-LN-/231464958089?pt=LH_DefaultDomain_0&var=&hash=item7b91b49fa8

For now he's looking at 24V controllers. But 24 or 48 I'd go vertical with that many batteries. For 24V then 2x4 battery array 3 high.