Published specifications
Product matches come from the active catalog — amp-hours, watt-hours, continuous output, and controller ratings tracked from manufacturer listings.
Independent planning platform
About SunPowerLogic
SunPowerLogic is an independent planning resource for vans, cabins, boats, and other off-grid power builds. We help readers estimate baseline system requirements and compare listed equipment against those assumptions using published specifications—not sales pitches.
Our mission
We publish clear, specification-driven content so buyers can evaluate equipment before purchasing from a retailer — with documented assumptions you can inspect, challenge, and adapt to your own loads and location.
SunPowerLogic documents example daily energy assumptions, peak load estimates, and sizing formulas for common off-grid setups. Product pages, guides, and comparisons explain how catalog specifications relate to those planning baselines so you can evaluate whether a component may fit your build before purchasing from a retailer.
Our content is informational. It is not a substitute for a licensed electrical design, site-specific load analysis, or manufacturer installation guidance.
We prioritize accuracy of published catalog data, transparent methodology, and practical planning context over promotional language or unsupported performance claims.
What we build
Interactive tools and editorial content that turn baseline energy math into actionable equipment recommendations — all from published catalog specifications.
Solar System Builder
Recommend a complete setup — battery, array, inverter, controller, or portable power station — from catalog specifications.
Explore →Planning Calculators
Size batteries, solar arrays, inverters, and charge controllers with transparent baseline math.
Explore →Buying Guides
In-depth guides connecting sizing assumptions to real equipment decisions for common builds.
Explore →Product Comparisons
Side-by-side specification comparisons for batteries, inverters, and other catalog equipment.
Explore →Product Catalog
Browse active listings with published Wh, W, amp, and voltage specs used in planning tools.
Explore →Our methodology
Recommendations are based on published manufacturer specifications and transparent calculations — not hands-on testing claims or sponsored picks dressed up as engineering advice.
SunPowerLogic does not claim hands-on testing for every product in the catalog. Our reviews are specification-based: we collect manufacturer-listed figures—wattage, amp-hours, voltage, continuous output, BMS limits, and similar fields—and compare them against the baseline requirements calculated for each setup or guide scenario.
When a product meets, partially meets, or falls below an estimated requirement, we explain why using the numbers shown on the page. We do not declare universal winners; suitability depends on your architecture, loads, and installation constraints.
- Product matches come from the active SunPowerLogic catalog
- Sizing uses documented formulas with visible inputs
- Comparisons explain trade-offs without default brand bias
- Pricing and availability are deferred to the merchant at purchase time
Some outbound links are affiliate links. Affiliate relationships help support the site but do not determine which products appear in the catalog or how they are evaluated. Read our Affiliate Disclosure for details. If you believe catalog data is outdated or incorrect, please contact us so we can review the listing.
Who it's for
Documented baseline configurations and planning tools for common off-grid use cases — with typical components and energy assumptions you can customize in the builder.
Van Life
Sprinter and camper builds with roof shading and mobile load assumptions.
View setup →Off-Grid Cabins
Seasonal sun and cold-weather storage considerations for remote structures.
View setup →Tiny Homes
Limited roof area and higher daily energy targets on compact footprints.
View setup →Sailboats
Marine environments, mast shade, and corrosion-resistant hardware context.
View setup →Overlanding
Vibration, dust, and flexible deployment for truck-based mobile power.
View setup →DIY Solar
Hands-on builds using calculators and catalog specs to plan your own system.
View setup →How we operate
Equipment references and editorial standards that keep recommendations independent.
Independent recommendations
We do not accept payment to change sizing results, comparison outcomes, or specification summaries. Catalog and setup assignments drive equipment references.
Affiliate transparency
Some outbound links are affiliate links. Commissions support the site but do not determine catalog inclusion or evaluation outcomes.