Hi, I have a single Panel with below specs,
Pmax=550W Vmp=31.6v Imp=17.4A Voc=37.9v Isc=18.52A
Used for about 1 year now.(with a 12v Gel battery. Planning on switching to a Lithium battery as Gel battery capacity has dropped)
I tried to find another panel with same specs but could not find any in my country.
Therefore making 2 panels series is impossible.
What would be the most efficient way to use this panel with a Lithium battery ?
1. Use a 12v LifePo4(3.2x4) battery with a MPPT controller (+12v inverter) ?
OR
2. Use a 24v LifePo4(3.2x8)/Lion(3.7x7) battery with a PWM controller (+ 24v inverter) ? (saw few videos stating that PWMs are bad for Lithium batteries)
OR
3. Use a 24v LifePo4(3.2x8)/Lion(3.7x7) battery with a MPPT controller(is this even possible ? seems most MPPT controllers need PV voltage to be 1.5/2 times the battery voltage OR PV voltage > Battery voltage+5v) ?
or is there any other better option ?
Pmax=550W Vmp=31.6v Imp=17.4A Voc=37.9v Isc=18.52A
Used for about 1 year now.(with a 12v Gel battery. Planning on switching to a Lithium battery as Gel battery capacity has dropped)
I tried to find another panel with same specs but could not find any in my country.
Therefore making 2 panels series is impossible.
What would be the most efficient way to use this panel with a Lithium battery ?
1. Use a 12v LifePo4(3.2x4) battery with a MPPT controller (+12v inverter) ?
OR
2. Use a 24v LifePo4(3.2x8)/Lion(3.7x7) battery with a PWM controller (+ 24v inverter) ? (saw few videos stating that PWMs are bad for Lithium batteries)
OR
3. Use a 24v LifePo4(3.2x8)/Lion(3.7x7) battery with a MPPT controller(is this even possible ? seems most MPPT controllers need PV voltage to be 1.5/2 times the battery voltage OR PV voltage > Battery voltage+5v) ?
or is there any other better option ?