Five steps. Zero guesswork. From a complete beginner to a confident, correctly-sized power system purchase.
Step 1 of 5 Listen to Episode One: FoundationsStart here—even if you think you already know the basics. Marine DC power is a different beast than residential electricity, and this episode establishes the essential language for everything that follows. Don’t skip this, regardless of your experience; on the water, marine-specific standards like ABYC compliance, tinned copper, and saltwater corrosion resistance are non-negotiable for safety.
Not sure if this series is worth your time? This one-page overview maps all 8 episodes — what each one covers, what you’ll be able to do afterwards, and how they build on each other. Download it before Episode 01 and you’ll know exactly where you’re going.
Step 2 of 5 Calculate Your Exact Power LoadStart here—even if you think you already know the basics. Marine DC power is a different beast than residential electricity, and this episode establishes the essential language for everything that follows. Don’t skip this, regardless of your experience; on the water, marine-specific standards like ABYC compliance, tinned copper, and saltwater corrosion resistance are non-negotiable for safety.
Download the Power Audit Form PDF
The single most important tool in this series. List every load, apply the 1.5× losses buffer, and calculate your TDAHC in 10 minutes. This worksheet is the printable version of what Sparky does digitally — complete it before entering your numbers into the app.
Step 3 of 5 Run Your Numbers in Sparky APPInput your load calculation into Sparky (MarineAmp) to get a recommended battery bank size, solar array output, and charge controller specification. Sparky factors in depth of discharge, solar efficiency curves, and multiple charging sources — not just raw math.
BEFORE YOU CONTINUE:
Sparky is a diagnostic tool and pre-purchase qualifier — not a shopping cart.
Use it to understand what your system actually needs before reviewing any product.
Sparky asks your battery chemistry before calculating. Not sure which to choose? This guide walks you through the exact sizing formula — AGM vs LiFePO₄ on cost, cycle life, weight, and DoD — so you can answer confidently before running your numbers.
Step 4 of 5 Review the recommended Gear or search your ownNow that you know your system requirements from Sparky, review the actual components searched and recommand:
get an overal
Step 4 of 5 Search gear and tools
Armed with your Sparky-validated load calculation, you’re almost ready to buy. Search gear and tools with our Tech Scout App and our component selections reviews,
Step 5 of 5 Purchase with Full Confidence