SolarSizer - Solar & Battery

Professional off-grid solar, battery storage, and DC wire sizing engineering calculator for RVs, campervans, boats, marine vessels, and remote off-grid cabins!

SolarSizer precisely sizes your energy storage, photovoltaic array, critical wiring, and protection equipment with zero internet dependency (100% offline-first).

⚡ KEY MODULES & CAPABILITIES:

1. Battery Bank & Consumption Sizing:
• Calculate daily Wh & Ah loads for fridges, lights, water pumps, inverters, and custom loads.
• Built-in DoD thresholds for LiFePO4, Gel, and AGM battery chemistries.
• Autonomy reserve buffer for 1 to 5 sunless days.

2. Solar Array & Seasonal Tilt Angle Guide:
• Recommended PV wattage & series/parallel panel arrangements based on local PSH.
• Interactive 4-Season Tilt Simulator (Summer 24°, Equinox 39°, Winter 54°, Year-round 35°).
• Flat camper roof (0°) winter glancing reflection loss demo and 180° South azimuth guide.

3. DC Wire Gauge & Voltage Drop Calculator:
• Metric (mm²) and AWG gauge calculations for 12V, 24V, and 48V DC systems.
• Compliance with standard <= 3% voltage drop safety margins with live power loss metrics.

4. 3 Critical System Lines & Fuse Sizing:
• PV to MPPT Line: Cold Voc voltage calculations, short-circuit current (Isc), and gPV fuses.
• MPPT to Battery Line: 1.25x charge current safety sizing and MIDI fuses.
• Battery to Inverter Line: High-amperage surge handling, heavy cable sizing, and ANL/Mega fuses.

5. Interactive Wiring Diagram & BOM Material Sheet:
• Dynamic schematic that updates live with cable cross-sections and fuse ratings.
• One-tap clipboard export for project bill of materials (BOM).

6. Solar & Electrical Terminology Glossary:
• 14 essential terms (Voc, Isc, DoD, MPPT vs PWM, Surge, AWG) explained clearly.

🔒 PRIVACY & OFFLINE FIRST:
SolarSizer collects zero personal data, contains no ads, and operates entirely offline. Perfect for remote camping, boondocking, and marine navigation.