Solar & Battery
How Long Will a 200Ah Battery Last? (Real Scenarios)
A 200Ah LiFePO4 gives you 2,560Wh. See runtime tables for fridges, CPAP, TVs, fans, and multi-device scenarios like RV overnight and cabin daily use.
9 min
20 articles
Blog
Practical articles on solar power, battery systems, and emergency preparedness.
Solar & Battery
Solar Power for CPAP Machines: Nightly Battery Sizing
A CPAP uses 25-60W per night. See battery sizing tables by model, runtime by battery size, and how many solar panels to recharge daily.
8 min
Solar & Battery
Series vs Parallel Battery Wiring: When to Use Each
Series doubles voltage, parallel doubles capacity - but total energy stays the same. See the decision chart, wiring math, and common mistakes to avoid.
8 min
Solar & Battery
Charging LiFePO4 Batteries in Freezing Temperatures
LiFePO4 batteries suffer permanent damage when charged below 32°F. See the temperature chart, damage thresholds, and 3 cold-weather solutions with costs.
8 min
Power & Electrical
What Size Inverter for a Submersible Well Pump?
A 1HP well pump needs a 4,000W+ inverter (or 2,000W with a soft start). See the sizing table for 1/2 HP to 2 HP pumps with surge ratings.
8 min
Power & Electrical
Chest Freezer vs Upright: Off-Grid Power Comparison
A chest freezer uses 30-50W average vs 60-100W for an upright. See wattage by size, battery runtime tables, and why chest freezers win for off-grid.
8 min
Solar & Battery
The Ultimate Guide to Powering Starlink Off-Grid
Power Starlink off-grid with solar + battery. See complete system builds at 3 price points, Mini vs Standard comparison, and regional solar sizing.
11 min
Solar & Battery
How Long Will a 100Ah Battery Last for Starlink Mini?
A 100Ah LiFePO4 battery runs Starlink Mini for 30-42 hours. See runtime tables for every battery size, plus solar sizing to run Starlink 24/7.
8 min
Solar & Battery
Starlink Mini Power Consumption: Real-World Wattage Data
Starlink Mini uses 20-40W depending on activity. See real power draw by mode, how it compares to other dishes, and how to cut wattage for off-grid setups.
11 min
Water Storage
Emergency Water Storage for a Family of 4: How Much You Really Need
A family of 4 needs 56 gallons minimum for 2 weeks. See the complete water storage chart by duration, plus container options and treatment.
8 min
Solar & Battery
LiFePO4 Voltage Chart: How to Read State of Charge Accurately
A 12V LiFePO4 battery reads 13.4V at 90% and 13.0V at 30%. See the complete voltage-to-SoC chart for 12V, 24V, and 48V batteries.
13 min
Water Storage
Bleach to Water Ratio: The Definitive Purification Chart
Add 8 drops of 6% bleach per gallon of clear water. See the complete bleach to water ratio chart from 1 quart to 55 gallons, for both clear and cloudy water.
12 min
Solar & Battery
Will a 100Ah Battery Run a Fridge? The Runtime Truth
A 100Ah LiFePO4 battery runs a 12V camping fridge for 3+ days or a residential fridge for 8-10 hours. See runtime tables for every fridge type.
9 min
Solar & Battery
How Many Solar Panels for a 1HP Well Pump?
A 1HP well pump needs 6-10 solar panels (400W each) depending on depth and method. See sizing tables for direct solar vs battery backup systems.
8 min
Solar & Battery
LiFePO4 vs AGM for Solar Storage: Complete Comparison (2026)
LiFePO4 costs 3x more upfront but delivers 2x the usable energy and 10x the cycle life. See the real cost-per-cycle math and which battery wins for your setup.
14 min
Solar & Battery
How Long Will a 100Ah Battery Last? Runtime Calculator & Guide
Calculate exactly how long a 100Ah battery will run your devices. Includes runtime tables, real examples, and our free calculator.
14 min
Solar & Battery
How Many Solar Panels to Charge a 100Ah Battery? Calculator & Guide
Find the right solar panel size to charge your 100Ah battery. Includes sizing charts, charge time formulas, and our free calculator.
8 min
Water Storage
How Much Water Per Day for Survival? Emergency Water Storage Guide
Learn how much water to store per person per day for emergencies. Includes storage tips, calculation formulas, and our free water calculator.
8 min
Power & Electrical
What Can a 1500 Watt Inverter Run? Complete Appliance Guide
See exactly what appliances a 1500W inverter can power. Includes wattage charts, surge requirements, and battery sizing tips.
7 min
Solar & Battery
LiFePO4 vs Lead Acid Battery: Which Is Better for Off-Grid?
Compare LiFePO4 and lead acid batteries for solar and off-grid use. Real numbers on cost, lifespan, weight, and performance.
9 min