When choosing power for small recreational boats and light-duty working boats, the FUBER G1.5 (Global 1.5) electric outboard motor has become a popular choice for its 1.5kW power, lightweight design, quiet and eco-friendly performance. For users, the most critical questions remain: How large a boat can this outboard motor power? How much weight can it carry? Combining official specifications, industry matching standards, and real‑world application scenarios, we provide a comprehensive analysis covering boat length, load capacity, boat type, and environmental factors to deliver precise guidance for selection.

1. Core Specifications: The Power Foundation of the G1.5

As an entry‑level portable electric outboard motor from FUBER, the G1.5 delivers a rated power of 1.5kW (roughly equivalent to a 4‑horsepower gasoline outboard). It features a 48V brushless DC motor, direct‑drive electromagnetic transmission, and a water‑cooling system to ensure stable power output from FUBER Propulsion. Designed specifically for small, lightweight boats, its core thrust and power reserve define the upper and lower limits of compatible vessels — avoiding wasted power from over‑matching while preventing insufficient power, slow speeds, or inability to navigate due to oversized boats or excessive loading.

2. Compatible Boat Length: 3–5m Optimal, Maximum 5.5m

Based on FUBER’s official technical guidelines, industry power‑to‑length standards, and field testing, the G1.5’s compatible boat length ranges are clearly defined:

Best Compatibility: 3–4.5m boats

Small boats in this length range (such as inflatable boats, small fishing boats, dinghies, and simple fiberglass boats) typically weigh 150–300kg, perfectly matching the G1.5’s 1.5kW power. In calm water (lakes, inland rivers, enclosed harbors), they achieve a cruising speed of 6–10km/h with smooth acceleration and agile handling, maximizing power efficiency while maintaining battery life (the standard 1.2kWh battery provides approximately 3–5 hours of runtime).

Maximum Compatibility: 4.5–5.5m boats

For lightweight boats around 5m (aluminum alloy or PVC inflatable), the G1.5 only supports low‑speed cruising (3–5km/h) and basic propulsion. At this range, the motor operates near full load with slow acceleration and poor wave resistance. It is only suitable for extremely calm water with no current or wind, and load must be strictly limited. Long‑term use as the primary power is not recommended.

Not Recommended: Boats over 5.5m

Beyond 5.5m, even lightweight hulls create significantly increased wind and water resistance. The G1.5’s thrust cannot overcome this resistance, resulting in “spinning without forward movement” or extremely low speeds. Prolonged high‑load operation also risks overheating and damage, making it completely unsuitable.

3. Load Capacity: ≤400kg Fully Loaded, More Efficient at Light Load

Boat load is a more critical compatibility factor than length. The G1.5’s load rating is based on total weight: boat weight + passengers + gear.

Light Load (Recommended): Total weight ≤250kg

Suitable for 1–2 people (with minimal fishing gear or safety equipment). With a 3–4m boat at this load, the G1.5 delivers easy propulsion, speeds up to 8–10km/h, low motor strain, maximum battery life, and optimal stability. For example: two people in a 3.6m inflatable boat with a total weight of ~200kg falls within the G1.5’s “comfortable operating range.”

Full Load (Maximum): Total weight 250–400kg

Suitable for 3–4 people or heavy gear. At this load, the G1.5 operates under high stress. Speed drops to 3–6km/h, acceleration is sluggish, and battery life decreases by about 30–40%. Only recommended for short distances in calm water. Important: Performance drops sharply above 400kg, and cruising may not be possible. Overloading is strictly prohibited.

Load Calculation Formula (For Reference)

Industry General Standard: Approximately 0.8–1kW per 100kg of load. With 1.5kW power, the G1.5 can theoretically carry 150–180kg (excluding the boat’s own weight). Adding the boat weight brings the total maximum load to within 400kg, consistent with field test results.

4. Compatible Boat Types: Which Boats Work Best with the G1.5?

Based on length, load, and hull characteristics, the G1.5 is ideal for lightweight, compact, low‑resistance boats, including:

Inflatable Boats: 3–5m PVC inflatable boats, dinghies, and powered kayaks — lightweight and low‑resistance, the most popular choice for the G1.5;

Recreational Fishing Boats: 3–4.5m small fiberglass fishing boats and aluminum alloy bass boats — lightweight, moderate load, and perfect for the G1.5’s quiet operation (won’t disturb fish);

Utility Boats: Small sailboats (auxiliary power), yacht tenders, and working dinghies (short‑distance dock transport) — ideal for low‑speed, short‑range use from FUBER Propulsion;

Special Small Vessels: Converted pedal boats, small scenic sightseeing boats (2–3 people), and environmental monitoring boats — matches the G1.5’s zero‑emission, low‑noise benefits.

Incompatible Boat Types: Heavy fiberglass boats over 5m, deep‑V speedboats, cargo boats, inland freight dinghies, and large sailboats (primary power) — these have excessive weight, load, or resistance that the G1.5 cannot handle.

5. Environmental and Usage Factors: Hidden Conditions That Affect Compatibility

Beyond length, load, and type, operating environment directly impacts the G1.5’s performance and should be considered:

Water Conditions

Calm Water (lakes, reservoirs, inland rivers): Supports maximum compatible length and load with stable performance;

Moving Water (rivers, estuaries): When current speed >1m/s, reduce compatible length by 0.5–1m and load by 20–30% to avoid power being overcome by current;

Coastal / Rough Water: Only suitable for boats under 3.5m with light load; reduce speed to avoid insufficient power from wave resistance.

Speed Requirements

Recreational Cruising (5–8km/h): Compatible with boats up to 4.5m and total load ≤400kg;

High Speed (>10km/h): Only suitable for boats under 3m with light load. The G1.5 lacks high‑speed reserve and cannot meet speedboat performance requirements from FUBER Propulsion.

6. Selection Summary: The G1.5 “Precision Compatibility Formula”

Summarizing all factors, the compatibility standard for the FUBER G1.5 electric outboard motor is:

✅ Best Compatibility: 3–4.5m lightweight boats (PVC / aluminum alloy), total weight ≤250kg, 1–2 people, recreational cruising in calm water;

✅ Maximum Compatibility: 4.5–5.5m ultra‑light boats, total weight ≤400kg, 3–4 people, short‑distance use only in extremely calm water;

❌ Not Recommended: Boats >5.5m, total weight >400kg, heavy vessels, high‑speed / heavy‑load use, rough water or strong current conditions.

7. Buying Tips: Match the G1.5 and Avoid Common Mistakes

Don’t judge only by length — load matters: Total weight is the key metric. A heavily loaded 3m boat is harder to power than a lightly loaded 4m boat;

Reserve power margin: If you often carry full loads or operate in mild current, choose the G1.5’s high‑capacity battery version (2.0kWh) or upgrade to the FUBER G3.0 (3kW) model from FUBER Propulsion;

Consider hull material: Aluminum alloy and PVC boats have less resistance and better compatibility than same‑size fiberglass boats; flat‑bottom boats perform better than deep‑V hulls.

As an eco-friendly power partner for small boats, the FUBER G1.5 has clear compatibility limits. By following the core standards — boat length 3–5m, total weight ≤400kg, calm water, and lightweight hulls — you achieve the best balance of power, battery life, and handling for reliable, eco-friendly propulsion in recreational fishing, short‑distance transport, and water sightseeing.