Hi Everyone,
I am currently working with mickey mouse 12v and moving imminently to 24v ................... but
I am struggling to work out why my batteries have never fully charged since i have had them (2 1/2years old now).
The system i am running conprises of
6 x 250 watt panels (2 facing SW, 2 facing SE and 2 on a turn table so i can track the sun) I have an average of 3.5 sun hours for my area, and because of my location in the summer receive upto 10 hours.
1 x Morning star MPPT 60 (12v upto 80 watts)
10 x 110Ah leisure batteries (FLA's) cheap ones
My electric consumption is 150 watts per 24 hr.
My batteries have only ever been fully charged after the first 2 days of buying them. The batteries are wired with 35 mm cable in pairs, diagonally wired and with equal lengths of cable to each pair from a mains supply. i.e. the MPPT - generator battery charger supplies power to a + - connection and then distributed to the batteries equally.
My inverter draws from the same points as the MPPT connects to.
My MPPT is set and is charging at 14.6volts. Today the sun is out the MPPT is producing 14.6 volts and 16 Amps and only using 200 watts.
EXPERIMENT TODAY
I have turned off all of my external supply and the MPPT only required 70 watts, put out 5 Amps and kept the voltage at 14.6
What i dont understand is, if the MPPT can produce upto 60 Amps, why can it not deliver this to the batteries?????
While i sort of understand that the voltage cant go above the 14.6volt i dont understand why the batteries dont charge up???
Help, advice, assistance required as its all a bit of black magic to me!!
I am currently working with mickey mouse 12v and moving imminently to 24v ................... but
I am struggling to work out why my batteries have never fully charged since i have had them (2 1/2years old now).
The system i am running conprises of
6 x 250 watt panels (2 facing SW, 2 facing SE and 2 on a turn table so i can track the sun) I have an average of 3.5 sun hours for my area, and because of my location in the summer receive upto 10 hours.
1 x Morning star MPPT 60 (12v upto 80 watts)
10 x 110Ah leisure batteries (FLA's) cheap ones
My electric consumption is 150 watts per 24 hr.
My batteries have only ever been fully charged after the first 2 days of buying them. The batteries are wired with 35 mm cable in pairs, diagonally wired and with equal lengths of cable to each pair from a mains supply. i.e. the MPPT - generator battery charger supplies power to a + - connection and then distributed to the batteries equally.
My inverter draws from the same points as the MPPT connects to.
My MPPT is set and is charging at 14.6volts. Today the sun is out the MPPT is producing 14.6 volts and 16 Amps and only using 200 watts.
EXPERIMENT TODAY
I have turned off all of my external supply and the MPPT only required 70 watts, put out 5 Amps and kept the voltage at 14.6
What i dont understand is, if the MPPT can produce upto 60 Amps, why can it not deliver this to the batteries?????
While i sort of understand that the voltage cant go above the 14.6volt i dont understand why the batteries dont charge up???
Help, advice, assistance required as its all a bit of black magic to me!!
Comment