SteveOO
Member I
Hello, I'm about to upgrade my solar/battery system from a couple old panels and batteries to 800watts of 4 bifacial panels and 560ah in 2 lithium batteries. I'm just hoping to double-check my basic wiring plans here to make sure I'm not way off on some parameter.
The panel stats:
I'm planning to wire the panels in two groups of two panels panels in a series, and then in parallel to the charge controller. I believe this gives me a max voltage of: 56.2V and a current of: 18.24A at the charge controller.
They will go into a single Victron 100v/30a charge controller, and I believe power coming from the panels in full sunlight will be well within the range of that charge controller. But... am I off on any of this?
Going full parallel or full series are of course the other options, but this middle ground felt right to me.
Some extra info incase it helps:
The batteries will be directly charged via the main bus by the charge controller (starter battery will be in a separate circuit with the alternator and a small solar panel to keep it topped up).
I'll later add a DC-DC charger from the starter battery to the house bank. I'll have a switch to allow shore power directly to my 120v panel when at the dock, but am not wiring up batteries to charge through shore power at the moment. The inverter does not have 120v pass through, but I want to see if I can get by without shore power charging for now. If needed I'll bite the bullet in the future and swap that inverter out for a victron multiplus.
Sorry for the dense information dump, and thanks for any input!
The panel stats:
Max Power at STC | 200W |
Open Circuit Voltage | 28.1V |
Short Circuit Current | 9.12A |
Optimum Operating Voltage | 23.4V |
Optimum Operating Current | 8.55A |
Operating Temperature | -40°F to 194°F (-40℃ to +90℃) |
Maximum Series Fuse Rating | 15A |
I'm planning to wire the panels in two groups of two panels panels in a series, and then in parallel to the charge controller. I believe this gives me a max voltage of: 56.2V and a current of: 18.24A at the charge controller.
They will go into a single Victron 100v/30a charge controller, and I believe power coming from the panels in full sunlight will be well within the range of that charge controller. But... am I off on any of this?
Going full parallel or full series are of course the other options, but this middle ground felt right to me.
Some extra info incase it helps:
The batteries will be directly charged via the main bus by the charge controller (starter battery will be in a separate circuit with the alternator and a small solar panel to keep it topped up).
I'll later add a DC-DC charger from the starter battery to the house bank. I'll have a switch to allow shore power directly to my 120v panel when at the dock, but am not wiring up batteries to charge through shore power at the moment. The inverter does not have 120v pass through, but I want to see if I can get by without shore power charging for now. If needed I'll bite the bullet in the future and swap that inverter out for a victron multiplus.
Sorry for the dense information dump, and thanks for any input!