Both motors cost roughly the same. Both deliver 1kW of power. Both are built by companies that take electric boating seriously enough to win design awards for it. And yet they represent two fundamentally different philosophies about what a sailboat tender motor should actually be, and choosing between them correctly could be the most consequential equipment decision on your boat.
This isn't a comparison of specs. It's a comparison of two engineering worldviews, and figuring out which one matches how you actually use your tender.
The Fundamental Design Divide
Before getting into individual strengths, understanding the core design philosophy of each motor makes every specific comparison easier to interpret.
The Remigo electric outboard was conceived around a single obsession: eliminate every point of failure that exists on a conventional electric outboard. The result is a motor where the battery lives inside the shaft itself, sealed within an aluminum unibody housing with no external cables, no battery connectors to corrode, no separate battery unit to mount or manage. You pick up one object and attach it to the transom. That's the entire process.
The epropulsion spirit 1.0 evo was conceived around a different obsession: make the motor as capable as possible for the full range of sailing applications, and add a feature no electric outboard had ever offered before. Its battery mounts to the motor head (also fully integrated, also waterproof), and delivers genuine intelligence in the form of hydrogeneration, the ability to recharge its own battery while the boat moves under sail.
Two obsessions. Two excellent motors. One significant decision.
The Remigo One: The Case for Radical Simplicity
The Remigo One is a revolutionary 1kW / 3HP electric outboard motor designed for small boats and sailboats. The Remigo One Battery is built into its shaft. This eliminates the need for cables and exposed contacts to connect the battery to the motor, which is one of the most common points of failure for small electric outboards.
The numbers that define the Remigo One experience start with weight. The complete motor, battery, shaft, tiller, and all weigh 26.5 lbs. Add the transom bracket, and you're at 32 lbs. The total weight with bracket is approximately 14.5 kg, with an adjustable shaft from 15 to 30 inch equivalent. That's 10–12 lbs lighter than the Spirit Evo system, a difference that matters enormously when you're passing a tender motor over a sailboat rail at anchor, solo, in a swell.
The Slovenian-engineered aluminum unibody isn't just light. It's built with the assumption that a tender motor will spend significant time in harsh saltwater environments, banging against dinghy transoms, getting wet, getting dropped, and generally existing in the worst possible conditions for electronics. Without a battery connector, there's nothing to fill with salt or corrode over a season of hard use.
Speed control runs through two buttons rather than a twist throttle. Simple, deliberate, impossible to accidentally apply full power. The digital display shows battery level and power output. The shaft length adjusts steplessly across a wide range, making the Remigo One unusually easy to transfer between different boats, a meaningful advantage for cruising sailors who occasionally change tenders.
Battery capacity is 1,085 Wh, meaningful runtime for a day's tender duty, though smaller than the Spirit Battery Plus. At full throttle, expect approximately one hour; at 50% power, closer to two hours.
Where the Remigo One is clearly the right choice: Cruisers prioritizing simplicity, durability, and minimum weight. Solo sailors who move the motor frequently. Boaters who've lost patience with corroded battery connectors and want fewer things that can go wrong between the marina and the anchorage.
The ePropulsion Spirit 1.0 Evo: The Case for Intelligent Capability
The Spirit 1.0 Evo starts with a larger battery, 1,276 Wh in the Spirit Battery Plus, approximately 18% more capacity than the Remigo One, and adds every smart feature that makes a tender motor genuinely useful across a full cruising day.
Button start. Bluetooth app with real-time battery percentage, runtime, and speed data. A tiller display that shows remaining runtime in live minutes and hours rather than a percentage estimate. A battery that floats if you drop it overboard. A maximum tilt angle of 85 degrees that brings the entire shaft clear of the water on almost any transom configuration.
But the defining feature, the one that makes the Spirit Evo genuinely different from every other motor in this category, is hydrogeneration. The Spirit Evo includes a hydrogeneration feature allowing the motor to recharge its own battery while under sail. At 6 knots of sailing speed, approximately 140 watts per hour returns to the battery. Over a 5-hour offshore passage, that's 700 Wh recovered more than half a full charge, accumulated passively while doing nothing but sailing.
For a cruising sailor who anchors each night, makes multiple dinghy runs daily, and relies on the tender motor across weeks of passage-making, this changes the energy equation in a way that no battery upgrade or spare pack can replicate. The motor charges itself through the very activity that surrounds it.
Total system weight is 43 lbs, split as 24 lbs motor and 19 lbs battery, which can be carried separately. The full-throttle runtime is approximately 1hr 15min; at half throttle, closer to 2.5 hours. External 48V batteries (including ePropulsion's E-Series) extend range further for demanding applications.
Where the Spirit Evo is clearly the right choice: Sailors who do regular passages and want the motor to recover energy in transit. Cruisers with demanding daily tender schedules. Boaters who want maximum feature integration, live runtime display, app connectivity, smart battery management, alongside the best capacity in the category.
Head-to-Head: The Decisions That Actually Matter
Weight and Portability
Remigo One wins. At 10–12 lbs lighter, the advantage is genuine and consistent. For sailors who pass the motor over the rail solo, store it in a lazarette between uses, or frequently move it between vessels, the Remigo One's weight reduction is felt on every single trip. This is the Remigo One's most significant practical advantage.
Power and Range
Spirit Evo wins on raw capacity. 1,276 Wh vs 1,085 Wh gives the Spirit Evo 18% more battery before hydrogeneration is factored in. With hydrogeneration on a sailing day, the gap becomes substantial. For boaters doing high-frequency tender use over extended cruises, the Spirit Evo's energy management adds up to real daily range that the Remigo One simply can't match.
Simplicity and Durability
Remigo One wins. The Remigo One is constructed with all marine-grade aluminum housing, has relatively few moving parts, and fewer points of failure compared to other electric outboards. The absence of battery connectors isn't just elegant, it's a durability advantage that compounds over time in saltwater. Fewer electrical contacts mean fewer corrosion opportunities, and the aluminum unibody has a different quality of robustness than a motor housing with battery attachment hardware.
The Sailing Advantage
Spirit Evo wins — unambiguously. The Spirit Evo hydrogeneration feature has no equivalent on the Remigo One. For sailors who spend meaningful time under sail and want their tender motor to participate in the energy economy of the trip, this advantage is the most important feature comparison in this article. It's not a marginal improvement, it's a capability that fundamentally changes how you think about range and charging logistics on a cruising passage.
Usability and Interface
Tie, with different strengths. The Spirit Evo's live display, app connectivity, and precise runtime data give it a more sophisticated user experience. The Remigo One's two-button speed control and stepless shaft adjustment give it an intuitive simplicity that some boaters will genuinely prefer, particularly in rough conditions or gloves-on weather.
The Decision Framework
Choose the Remigo One if:
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You move the motor frequently, solo, over a rail, between vessels
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Weight is the primary constraint on your boat
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You value durability and simplicity over feature integration
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Your daily tender use is modest and predictable
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Corrosion-resistance in demanding saltwater conditions is a priority
Choose the Spirit 1.0 Evo if:
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You sail regularly and want the motor to charge itself on passage
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Your tender sees high daily use across a long cruising season
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Live runtime data and smart battery management matter to your trip planning
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You carry heavy loads or make longer tender runs regularly
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Maximum battery capacity and feature set justify the weight premium
Side-by-Side Comparison
| Remigo One | Spirit 1.0 Evo | |
| Power | 1kW / 3HP | 1kW / 3HP |
| Battery Capacity | 1,085 Wh | 1,276 Wh |
| Total Weight | 26.5 lbs (32 with bracket) | 43 lbs |
| Battery Location | Inside shaft — no cables | Motor head — battery cable |
| Hydrogeneration | ❌ No | ✅ Yes |
| Full Throttle Runtime | ~1 hour | ~1hr 15min |
| Cruising Speed | ~4 hours | ~2.5 hours |
| Shaft Adjustment | Stepless 15–23 inches | Short or Long (fixed) |
| Battery Floats | Not specified | ✅ Yes |
| Bluetooth App | ❌ No | ✅ Yes |
| Price (USD) | $2,999 | $2,999 |
Frequently Asked Questions
Can the Remigo One be charged at anchor without shore power?
Yes. Using the optional DC charger, you can charge the Remigo One in about 10–12 hours while at anchor, a practical off-grid solution for cruisers. The standard AC charger takes 6 hours; the fast AC charger reduces this to 3 hours.
Does the Spirit 1.0 Evo work with external batteries for more range?
Yes. The Spirit Evo runs on 48V and is compatible with ePropulsion's larger E-Series batteries as well as compatible third-party 48V batteries via an adapter cable. This gives the Spirit Evo significantly more range flexibility than the Remigo One, whose integrated battery cannot be supplemented or swapped.
Which motor handles rough conditions and saltwater better?
Both are rated IP67 for waterproofing. The Remigo One's aluminum unibody with no external electrical connections gives it an edge in long-term saltwater durability, fewer corrosion points means fewer maintenance concerns over a multi-year cruising program. The Spirit Evo's floating battery provides a meaningful safety advantage if the battery is dropped overboard.
Which is easier to install on different boats?
The Remigo One's stepless shaft height adjustment makes it significantly easier to transfer between boats with different transom heights, a genuine advantage for charter fleets or sailors who use multiple vessels. The Spirit Evo's fixed S or L shaft choices require selecting the right option at purchase.
Is either motor suitable for heavy tenders above 700 lbs?
Both motors operate most efficiently on boats under 600–700 lbs. Above that threshold, either motor works but consumes battery faster and delivers lower top speeds. For heavy tenders in demanding conditions, a 2kW motor would be a more appropriate starting point.
The Remigo One and Spirit 1.0 Evo are both exceptional motors, and the reason comparing them carefully matters is precisely because neither one is wrong. The Remigo One earns its place on every sailboat where simplicity, weight, and corrosion-resistance are the deciding variables. The Spirit 1.0 Evo earns its place on every boat where the energy recovery of hydrogeneration changes what a cruising week looks like.
If you're still working through which one fits your specific tender and sailing program, EMO Electric carries both, and their product team has the real-world experience to help you make the right call before anything ships, not after a season of second-guessing.