Batteries
12V UL Certified
Certified to UL1973. Consistent quality, audited over time.
12V Budget
Cheaper per amp-hour. Reliable today, no long-term guarantee.
48V UL Certified
Required if you are permitting your system or tying to the grid.
48V Budget
Great build quality, but off-grid use only — not permit-legal.
Battery Capacity Testers
After a few years, you need to test the capacity of your system.
Inverters
12V Off-Grid
RVs, boats, vans and small cabins. 1,000–3,000W.
48V Off-Grid
Run a whole house off-grid. 6,000–12,000W.
48V Hybrid
Grid-tied plus battery backup. Certified for interconnection.
High-Voltage Residential
Highest efficiency. This is what I run in my own home.
3-Phase Commercial
Take an entire warehouse off-grid. Effectively unlimited capacity.
Solar Panels
Mobile Panels
Lightweight and low-profile for RVs, vans and trailers.
Standard Panels
Best cost per watt for homes, ground mounts and carports.
Solar Mounting
Ground Mount
Fast to assemble, engineered and legal for permitted installs.
Roof Mounted
Low-profile systems engineered for secure, long-lasting roof installations.
Solar Carports
Dual-purpose structures that provide shade while generating clean energy.
Generators
Anker Solar Generators
Build a system in minutes! Beginner friendly and reliable.
Jackery HomePower
This is the only Jackery that I like. The output for the size and price is fantastic.
System Packages
Don't Want to Piece it Together?
These are complete, wire-by-wire builds I’ve assembled and tested myself. Every fuse, lug and breaker is specified, so nothing shows up missing on install day.

Hand-Truck 48V System

Hand-Truck 48V System ~$2,400

Off-Grid Home Blueprint

Full 48V house system ~$9,800

Code-Compliant 48V System

Permit & inspection ready ~$13,500

Components
Battery Chargers
Reliable charging for lithium batteries.
Wire & Connectors
Wiring essentials for a clean, reliable setup.
Fuses & Breakers
Essential protection for your electrical system.
Crimpers & Tools
Tools for building and maintaining your system.
Battery Monitors
Track your battery’s power and performance.
Solar-friendly A/C
Efficient cooling built for off-grid power.
12v Fridges
Efficient cooling for life on the road.
Components

Van or RV

Mobile, 12V, tight on space and weight

Boat

Marine-rated, waterproof, heated cells

Cabin or Shed

Small off-grid build, 12V or 48V

Whole House

Off-grid or grid-tied with backup

Terms & Conditions

Last updated: August 27, 2026

These Terms & Conditions govern your use of WillApproved.com (the “Website”), operated by Prowse Publications LLC (“we,” “us,” or “our”). By accessing or using this Website, you agree to these Terms & Conditions. If you do not agree with these terms, please do not use the Website.

Informational and Educational Purposes Only

The content on WillApproved.com is provided for general informational and educational purposes only. The Website contains product testing, reviews, recommendations, tutorials, opinions, technical information, and other content relating to solar power, batteries, electrical systems, off-grid equipment, and related products.

Nothing on this Website should be considered professional engineering, electrical, legal, financial, or other professional advice.

Electrical and Safety Disclaimer

Working with electricity, batteries, solar equipment, inverters, wiring, and related systems can be dangerous and may result in property damage, fire, serious injury, or death if performed incorrectly.

You are solely responsible for determining whether you have the knowledge, skills, tools, and experience necessary to perform any work described or discussed on this Website.

Always follow applicable laws, building codes, electrical codes, manufacturer instructions, safety requirements, and local regulations. Requirements may vary depending on your location and may change over time.

If you are not qualified or confident in your ability to safely install, modify, repair, or operate an electrical or solar power system, you should consult a qualified professional.

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We make reasonable efforts to provide useful and accurate information, but we do not guarantee that all information on the Website is complete, current, error-free, or suitable for your specific situation.

Products, specifications, prices, availability, electrical standards, laws, regulations, safety requirements, manufacturer instructions, and technology may change at any time.

You are responsible for verifying important information directly with manufacturers, retailers, qualified professionals, and applicable authorities before making purchasing, installation, or safety decisions.

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A product that works well in one application may not be appropriate for another. You are responsible for evaluating whether any product is appropriate, compatible, safe, and legally permitted for your intended use.

We do not guarantee the performance, reliability, availability, safety, quality, or suitability of any third-party product or service mentioned on the Website.

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You assume full responsibility for your decisions, purchases, installations, modifications, experiments, and actions based on information obtained from this Website.

You are responsible for independently verifying product compatibility, system design, electrical ratings, wire sizing, overcurrent protection, installation requirements, applicable codes, and all other safety-critical information.

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To the fullest extent permitted by applicable law, Prowse Publications LLC and its owners, employees, contractors, contributors, and affiliates will not be liable for any direct, indirect, incidental, special, consequential, exemplary, or other damages arising from or related to your use of the Website or reliance on its content.

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Changes to These Terms

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Contact

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Prowse Publications LLC
Email:
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1550 W Horizon Ridge Pkwy
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