Home / Off-Grid Notes
FIELD GUIDES & THEORY
Off-Grid Electrical Engineering Notes
In-depth technical guides covering battery chemistry mechanics, inverter surge physics, real-world solar irradiance, and electrical safety standards.
01
→
02
→
03
→
04
→
Electrical Engineering
How to Audit Off-Grid Electrical Loads: Watt-Hours & Phantom Overhead
Why multiplying device wattage by run-hours is only the first step, and how inverter standby draw drains off-grid battery banks.
Battery Storage
LiFePO4 Lithium vs AGM Lead-Acid: Usable Capacity, Cycle Life & Cold Weather
Why a 100Ah LiFePO4 battery delivers nearly double the usable runtime of a 100Ah AGM battery while lasting 5 times longer.
Inverter & Wiring
Pure Sine Wave Inverter Sizing: Continuous Watts, Surge Multipliers & DC Amperage
How to match inverter continuous output and surge ratings to inductive motor loads while sizing safe DC cables and fuses.
Solar Generation
MPPT vs PWM Charge Controllers: Real-World Solar Harvesting & String Sizing
Why MPPT charge controllers harvest up to 30% more solar energy than PWM controllers and how to calculate array string voltages.