โSep-09-2013 12:58 PM
โSep-10-2013 03:55 PM
โSep-10-2013 06:23 AM
โSep-10-2013 06:15 AM
โSep-09-2013 05:40 PM
RJsfishin wrote:
Ok, sorry I started that thread, but the worst part is I never got that MPPT controller ! This is the first time I ever had any trouble w/ shipment, local or overseas. They want to give me a refund, but I told'm I want what I ordered.
Now they want me to wait another week before they settle. But it seems like I'll never see anything but the refund.
โSep-09-2013 04:56 PM
โSep-09-2013 04:24 PM
โSep-09-2013 04:16 PM
โSep-09-2013 04:15 PM
pianotuna wrote:Thanks but my post was for others not familiar with the other thread. ๐
Hi mena,
Here you go:
mppt thread BFL13
โSep-09-2013 03:58 PM
โSep-09-2013 03:55 PM
โSep-09-2013 03:45 PM
mena661 wrote:
How about a link to that thread there bubba? ๐
โSep-09-2013 03:45 PM
โSep-09-2013 03:14 PM
RoyB wrote:Besides the advantage of the MPPT control, a user will get usable current from the modules on the shoulders of that 4-5 hours a day. My 235w module is still trickling at sundown.
What am I hearing here... I know I need lets say 14.4VDC @ 20AMPS per battery to be able to recharge that battery from a 50% charge state to a 90% charge state or more in a three to four hour time frame..
I think I am hearing that the PANELS are usually rated at 5-7AMPS of usable DC current available which is a big killer of getting the batteries back to a 90$ charge state but by running higher DC voltages from the panels will produce alot more current than the rated 5-7AMPS and possibly end up with 14.4VDC charging DC Voltages at a higher DC Current rate.
i.e. the controller will run at max with much the higher DC Voltages coming from the panel and produce higher DC current then using BUCK BOOST couple this back to the 14.4VDC at a higher DC current. I know I am not explaining this right but is something like this going on with the controller you are testing.
My recent planning is looking at two 100WATT or 120WATT portable panels coupled with a permanent 120WATT panel mounted on my POPUP roof. The normal rated DC output of the these panels specs using the standard type controllers will not produce a usable 14.4VDC at a high enough DC CURRENT to re-charge my batteries in the short 4-5 hours of the panels being in high sunlight in ONE DAY...
Think I am hearing something different now from these tests being performed.
Roy ken
โSep-09-2013 03:13 PM