Shared build
Cabin Solar Build
System12VDaily710 WhPeak150WSun5h/dayAutonomy3d
Solar Panels
Renogy 100W Solar Panel N-Type, 12V 100 Watt Solar Panel 16BB 25% High-Efficiency, N-Type Solar Panels × 2
100W each200W totalmonoVoc 22.79V
Battery Bank
ECO-WORTHY 12V 100AH LiFePO4 Lithium Battery with Bluetooth, Max.1280Wh Energy, Low Temperature Protection,
LiFePO412V100Ah1.1 kWh usable
Parts total$749.22
Prices are estimates — check the retailer for current pricing before purchasing.
System calculations
Solar array
200W
2 × 100W
Usable battery
1.1 kWh
100Ah @ 12V
Est. daily harvest
750 Wh
5h sun · 75% eff
Controller
MPPT 15A
Max charge current
Inverter output
250W
Continuous AC
Days of autonomy
1.6 days
1.1 kWh / 710 Wh/day
Runtime at peak load
6.8 hours
150W peak draw · 90% inverter eff
Solar recharge time
7.6 hours
Full usable battery from panels
Controller-limited charge
7.6 hours
~12.5A effective charge
Inverter headroom
100W
Above selected peak load
Estimates assume 5h peak sun and 75% real-world harvest efficiency.
⚠️ Compatibility warnings
⚠️
Controller Output
200W of panels can need about 16.7A of controller output on a 12V bank. The 15A controller may throttle in strong sun. At 24V this array only needs 8.3A — switching system voltage would resolve this.
🔵 Wire & fuse guide
Wire sizes follow NEC 310.15 ampacity. Always size for your run length and ambient temperature.
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