Blog
Deep dives into battery technology, solar system design, and electrical fundamentals. Practical knowledge from hands-on experience.
How Long Will a Generator Run on Propane?
Learn exactly how long a propane generator runs per tank. Fuel rate tables, BTU math, and real runtime examples for 20lb and 100lb tanks.
LiFePO4 vs Lead-Acid Runtime Compared
Side-by-side runtime comparison of LiFePO4 and lead-acid batteries. Real numbers on usable capacity, cycle life, and cost per kWh.
How to Size a Solar Battery Bank
Step-by-step guide to sizing a solar battery bank. Calculate daily usage, pick the right chemistry, and avoid common off-grid sizing mistakes.
Depth of Discharge: How Deep Can You Drain Your Battery?
Depth of discharge affects battery life more than any other factor. Learn optimal DoD for lead-acid, AGM, and LiFePO4 batteries.
What Is Motor FLA and How Electricians Use It
Full load amps (FLA) tells you how much current a motor draws during normal operation. Learn how to read it and why electricians rely on it.
How to Calculate Battery Runtime
The battery runtime formula: capacity times voltage times DoD, divided by load. This guide walks through every variable with worked examples.
Solar Panel Output Explained
A 400W solar panel rarely produces 400W. Learn what affects real-world output, how to estimate daily production, and where the watts go.
Using a 12V Battery for Your Fridge During a Power Outage
Keep your fridge running during a blackout with a 12V battery setup. Sizing guide, wiring options, and runtime estimates for common fridges.
How to Size Inverter Cable
Undersized inverter cables cause voltage drop, heat, and fire risk. Learn how to size battery-to-inverter wiring correctly for any setup.
RV Battery Sizing Guide
Figure out how many batteries your RV actually needs. Load audit, chemistry comparison, and sizing examples for weekend and full-time travel.
How to Power a CPAP Machine Off-Grid
Power your CPAP off-grid with the right battery. Machine power draws by setting, battery sizing math, setup steps, and FAA airline rules explained.
E-Bike Battery Range: What Affects It and How to Maximize It
What affects e-bike battery range and how to squeeze more miles per charge. Assist levels, terrain, temperature, and battery Wh ratings explained.
Drone Battery Flight Time: Why Real Numbers Are Lower
Why real drone flight time falls short of manufacturer claims. LiPo battery physics, payload effects, wind drag, and battery care tips.
Solar Panel Payback Period: How to Calculate ROI
Calculate your solar panel payback period step by step. System costs, incentives, energy savings, and cash vs loan vs lease financing compared.
Optimal Solar Panel Angle by Latitude and Season
Find the best tilt angle for solar panels based on latitude and season. Angle table, seasonal adjustment guide, and fixed vs tracker comparison.
How to Calculate Your Off-Grid Daily Energy Needs
Calculate your off-grid daily energy needs step by step. Appliance power draws, load calculation method, and battery plus solar sizing from results.
Voltage Drop in Electrical Wiring: What It Is and When It Matters
Voltage drop in electrical wiring explained with the formula, AWG resistance data, worked examples, and NEC recommendations for acceptable limits.
Horsepower to Watts: The Three Types of HP Explained
Mechanical, electrical, and metric horsepower differ by up to 1.4%. Conversion tables, real motor examples, and when the difference matters.
kVA vs kW: The Real Difference and When It Affects You
kVA and kW measure different things. Power triangle explained with real examples for generator sizing, UPS ratings, and transformer calculations.
Your Electricity Costs Broken Down: A Practical Guide
Break down your electric bill into costs you can control. Rate structures, appliance running costs, time-of-use pricing, and savings strategies.
What Appliances Actually Cost to Run at Home
Find what every appliance in your home costs to run. Field-audit method, real wattage numbers, and where the savings actually live.
The Real Cost of Charging an Electric Car
Why one EV owner pays $300 a year and another pays $1,800 to charge. The four levers — where, when, how, and what you drive — that set the cost.