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ePropulsion X-Series: the complete electric outboard system
The X12, X20, and X40 sit at the heavy end of electric outboard power — 12 to 40 kW on ePropulsion's 96V eSSA platform. Everything you need to build the system is on this page: the motor, the G-Series battery and charging, controls, wiring, and the install hardware.
Swipe the tables sideways to see every column →
| Motor | Continuous power | Shaft options | Best for | From |
|---|---|---|---|---|
| X12 | 12 kW | 15" short / 20" long | Pontoons, day cruisers, repowering a small gas outboard | $11,500 USD |
| X20 | 20 kW | 20" long / 25" XL | Heavier cruisers and center-consoles wanting strong mid-range | $15,300 USD |
| X40 | 40 kW | 20" long / 25" XL | Big tenders, commercial work, and twin-motor installs | $19,500 USD |
Built-in drive instead? See the I-Series inboards and POD Drive eSSA. Lighter portable motors are under all electric outboards.
Everything else your X-Series needs
The motor is one piece. These are the energy, control, wiring, and hardware components that make up a full 96V eSSA system — all on the eSSA platform, all here. Not sure what your build needs? Book a consultation and we'll spec the whole list.
| Part | What it does |
|---|---|
| Energy & charging | |
| G-Series 96V Battery | The 96V LiFePO4 pack that powers the system — 10.2 or 23.5 kWh, parallel for more range |
| E100 48V Battery (5.1 kWh) | Alternate LiFePO4 pack for the X12 — wired in parallel into the 96V eSSA system (IP67) |
| G-Series Charger (16A / 32A) | Charges the battery from shore power |
| G-Series MPPT (2 kW) | Charges the 96V bank from solar |
| Control & monitoring | |
| Smart Controls & Displays | Throttle / tiller, side-mount control, and the system display |
| Kill Switches | Safety stop for throttle or side-mount |
| GPS & Antenna Package | Adds GPS speed/position to the display |
| Wiring & communication | |
| Cables, Connectors & Bus Box | The 96V power and signal wiring that ties the system together |
| EP-CAN Extension Cables | Extends the CAN comms run (1 m / 3 m) |
| CANHub Converter | Parallels multiple chargers / expands the CAN network |
| Power conversion & distribution (installer-grade) | |
| DC-DC Converters (96V) | Steps 96V down to 12 / 24 / 48V for house loads |
| DC-AC Inverter (6 kW) | 230V AC household power from the 96V bank |
| Distribution Box 96VDC | Fused 96V DC distribution for the system |
| Distribution Box 220VAC | AC distribution for chargers / shore feed |
| Battery Isolator 96VDC | Isolates the 96V bank for service and safety |
| Rectifier 230VAC→96VDC (100A) | High-current charging from a genset or shore |
| EMS Controller | Energy-management brain for the eSSA system |
| Props & hardware | |
| Propellers | Pitch options for the X12 / X20 / X40 |
| Anodes & Anti-Cavitation Plate | Sacrificial anodes and replacement plate |
| Outboard Covers | Protective covers for the X-Series |
Each part links to its product page for full specs and current pricing. The big power-distribution components are installer-grade — we'll tell you which ones your build actually needs.
How to spec an X-Series, in three questions
Power, shaft length, and how you'll store and charge the battery.
How much power?
Match the motor to your hull and the gas outboard you're replacing. The X12 (12 kW) suits pontoons and lighter cruisers; the X20 (20 kW) covers heavier hulls; the X40 (40 kW) is for large or commercial boats and twin setups. When in doubt, size up — an electric motor loafing at part throttle is far more efficient.
Which shaft length?
Measure your transom height. As a rule of thumb, a 15" transom takes the short shaft, 20" takes the long, and a 25" (XL) transom — common on sailboats and tall-transom cruisers — needs the XL. The cavitation plate should sit just below the hull bottom.
How much battery & charging?
Size the G-Series bank to your range, then add shore charging (G-Series charger) and/or solar (96V MPPT). We'll work the energy budget with you.
Why buy ePropulsion from Blue Marine
Authorized ePropulsion dealer
Warranty and support handled by us, not a ticket queue.
ABYC-certified advisors
We size the motor, battery, and charging to your boat as one system.
Free US shipping over $49
Fast shipping from Seattle and local pickup. Freight quoted for motors and battery banks.
Real people, real boats
Call (800) 628-6306 Mon–Sat — we run electric propulsion ourselves.
Repowering with an X-Series?
Tell us your boat, the motor you're replacing, and your typical runs — we'll spec the motor, shaft, battery, charging, and distribution as one system.
X-Series FAQ
What do I need besides the motor?
At minimum: a G-Series 96V battery and a way to charge it (the G-Series shore charger and/or the 96V MPPT for solar), plus the controls/display and the eSSA cables and bus box to wire it together. Larger or AC-equipped boats add power-distribution components (DC-DC, inverter, distribution boxes, isolator, rectifier, EMS). The “Complete your system” table above lists every piece — we'll confirm exactly what your build needs.
What battery does the X-Series use?
The ePropulsion G-Series 96V LiFePO4 battery — 10.2 kWh (G102-100) or 23.5 kWh (G102-230). You can parallel packs for more range, and charge from shore or solar. Battery is sold separately so you can size the bank to your boat.
What is the eSSA platform?
eSSA is ePropulsion's 96V high-voltage architecture shared across the X-Series outboards, I-Series inboards, and POD drives. The higher system voltage means less current, smaller cabling, and a common ecosystem of batteries, charging, controls, and distribution.
How do I choose the shaft length?
Measure your transom height. Roughly: 15" transom = short shaft, 20" = long, 25" = XL. The anti-cavitation plate should sit just below the bottom of the hull. If you're between sizes or have a stepped transom, ask us and we'll confirm.
Can I run twin X-Series motors?
Yes — the X20 and X40 are commonly run as twins on larger hulls, sharing a 96V battery bank through the eSSA distribution components. We'll lay out the wiring, distribution, and battery sizing for a twin install.
What warranty comes with the X-Series?
Covered by ePropulsion's 24-month limited warranty (from delivery to the first end customer) against defects in materials and workmanship under normal recreational use with proper installation and maintenance. Commercial or professional use is covered by your local statutory warranty instead. Blue Marine is an authorized ePropulsion dealer and will help with any claim.