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System12VSun5h/dayAutonomy2d
☀️
Solar Panels
My part solar panel × 2
370W each740W totalmonoVoc 42.8V
Unknown
Custom⚡
Charge Controller
victron charge controller
MPPT50AMax PV 100V12V/24V
Unknown
Custom🔋
Battery Bank
My part battery
LiFePO412V600Ah6.8 kWh usable
Unknown
Custom🔌
Inverter
My part inverter
3000W continuous6000W peak12V input
Unknown
CustomParts total$0.00*
Prices are estimates — check the retailer for current pricing before purchasing.
System calculations
Solar array
740W
2 × 370W
Usable battery
6.8 kWh
600Ah @ 12V
Est. daily harvest
2.8 kWh
5h sun · 75% eff
Controller
MPPT 50A
Max charge current
Inverter output
3000W
Continuous AC
Runtime at peak load
2.1 hours
3000W peak draw · 90% inverter eff
Solar recharge time
12 hours
Full usable battery from panels
Controller-limited charge
12 hours
~46.3A effective charge
Estimates assume 5h peak sun and 75% real-world harvest efficiency.
⛔ Compatibility issues
⛔
PV Voltage
Panel VOC rises to ~107V in cold weather (2 in series x 42.8V x 1.25), exceeding controller max of 100V. Will destroy controller.
⚠️
Controller Output
740W of panels can need about 61.7A of controller output on a 12V bank. The 50A controller may throttle in strong sun. At 24V this array only needs 30.8A — switching system voltage would resolve this.
⚠️
High Current
3000W on 12V = 250A continuously. Requires 4/0 AWG cable. Consider 24V to halve current.
🔵 Wire & fuse guide
Battery → Inverter4/0 AWG ↗315A ANL ↗+
Wire sizes follow NEC 310.15 ampacity. Always size for your run length and ambient temperature.
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