12v and 24v panel

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  • Estragon
    Estragon Registered Users Posts: 4,496 ✭✭✭✭✭
    #32
    Depending on climate, tilt, etc., a reasonable guess might be for one of those to produce ~150w for 4hrs of full sun equivalent, for about 600wh/day.

    150w/14.5v=~10a charging, so something in the range of 100-125 amp-hour nominal 12v true deep cycle battery.

    You would need to check the current requirements on the tv, but my guess is something like a Morningstar 300w pure sign wave would be a good choice. I would avoid cheap modified sign wave inverters in this application. I have a tv about the same size which takes ~150-200w. With the setup described, I'd expect to be able to run it for a couple of hours/day, providing I either had a secondary way of charging the battery, or could be sure of enough sun to charge the next day.
    Off-grid.  
    Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
    Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
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  • Roba
    Roba Registered Users Posts: 7 ✭✭
    #33
    Thank you for the reply.well my pv panel is 210wtt-grid type but am going to use it with a MPPT 20amp charger controller for a 12v battery,I live in rural area where sun is very available daily-open space.the tv is 65watt.so now the battery and inverter size to use for long hours please?
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  • BB.
    BB. Super Moderators, Administrators Posts: 33,662 admin
    #34
    Go to post #30,  I have a sample calculation.

    http://forum.solar-electric.com/discussion/comment/379848#Comment_379848

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
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