Lj Gwen's posts

Thanks for the reply..... I guess what I meant by maximimize charge
to the batteries, was best controller to stay up with loads on batteries.
I assumed there was a different programming between the two
mppt500 and mppt500HV controllers. I bought the controller from
an ex dealer and he emailed me and asked which I wanted, the std
or the hv.  I read the specs on your site which showed the mppt500
had a max input of 100 volts, but on another site the mppt500hv
said "Model MPPT 500HV operating efficiency has been optimized
    for 48v nominal PV Input voltage."
My panels say 20volt nominal voltage each.  Do you think I should series them and go to the HV that is optimized to 48v or just stay with the standard MPPT 500 and series the panels?  We will not
have the panels in lower than 32 degrees F.

I am not commiting you to this... just want your experienced opinion.....

Thank You
LJ

Posted a lot of info.  about my system.  Just need help selecting controller.

Thanks
LJ

I am building a small off grid system using two 230 watt panels.
They are 34 volts open 8 amps each, BP 3230T. I can wire them
In parallel or series.  The battery bank is (4) Trojan T105 series-parallel
For 12 Volts.  My inverter is 3000 watt Heart.  Will use for TV, small
electronics, lights, and other items as used in a weekend cabin.  The panels are Pmax 29.1V,  Current @Pmax 7.9A,  VOC 36.7V, Nominal is 20V.    I have      access to either of the following controllers.  MPPT500 or MPPT500HV.

Should I use a BZ MPPT500 or the HV version,  to maximize wattage to

storage
batteries?  Series or parallel the panels?  25 ft run to panels.

Thanks

LJ