Maintenance Guide for Electric Watercrafts

By the ROXEN Team · Updated March 2026

In short: Electric watercraft need far less maintenance than petrol models. For ROXEN, the core routine is: rinse with fresh water after every ride, keep the jet intake clear, store the battery at 40–60% charge when not in use, and do a full inspection at the start and end of each season. No oil changes, no spark plugs, no winterisation.

Electric watercraft are built for simplicity. ROXEN is designed to give you more time on the water and less time thinking about upkeep. With a few consistent habits, your electric watercraft stays clean, fast, and ready for every session, whether you ride in freshwater lakes or saltwater coastlines.

This guide covers everything: daily care, battery best practices, saltwater vs freshwater routines, seasonal storage, and a full maintenance checklist.

Why Maintenance Still Matters for Electric Watercraft

Electric watercraft eliminate most of what makes petrol models time-consuming to own. No oil changes. No spark plugs. No belts. No exhaust system. No fuel to stabilise over winter.

What they do need is straightforward: keep the hull clean, protect the battery, and make sure the jet intake runs clear. Done consistently, these habits keep range predictable, extend battery lifespan, and prevent the kind of small issues that turn into larger ones if ignored.

For rental operators and fleet owners, consistent maintenance also means less downtime and lower operating costs per session.

Electric vs Petrol: The Maintenance Difference

Petrol personal watercraft require engine oil and filter changes, spark plug replacement, fuel system care, impeller servicing, and full winterisation with fuel stabiliser. Annual service costs can run into several hundred euros even for basic upkeep.

ROXEN's maintenance focuses on three things:

1. Rinsing after every ride
2. Battery care and storage
3. Seasonal inspection of the jet pump and hull

That is the full list. There is no engine to service.

After Every Ride: Daily Routine

These steps take under five minutes and protect the craft between sessions:

1. Rinse the entire hull with fresh water, including the underside
2. Flush the jet intake and nozzle to clear any sand, seaweed, or debris
3. Wipe dry with a soft cloth, paying attention to the deck and handles
4. Dry the battery charging contacts before plugging in
5. Check visually for any new scratches, cracks, or loose fittings

This routine is the same whether you ride in salt or freshwater, though saltwater requires extra attention - see below.

Battery Care: The Most Important Habit

ROXEN's battery is built for many seasons with minimal effort. A few consistent habits make a meaningful difference to long-term battery health:

• Charge at room temperature when possible. Avoid charging in direct sunlight or extreme cold
• Avoid fully depleting the battery before charging
• Do not store the battery at 100% charge for extended periods
• Store at 40–60% charge if the craft will be unused for more than a week
• Keep battery contacts and the charger dry at all times
• Use only the ROXEN-approved charger

If you notice any significant change in range, charging time, or battery temperature during use, contact ROXEN support before the next session.

Saltwater vs Freshwater Care

Riding in Saltwater

Salt accelerates corrosion on exposed metal and can accumulate in the intake and nozzle. After every saltwater session:

• Rinse the full hull, intake, nozzle, and all exposed metal parts thoroughly with fresh water
• Apply anti-corrosion spray to metal fittings if the craft is used in saltwater regularly
• Dry the battery compartment and charging contacts before storage or charging
• Inspect the intake more frequently for salt buildup

Riding in Freshwater

Freshwater is gentler on the hardware, but still requires basic post-ride care:

• Rinse to remove mud, silt, or aquatic vegetation
• Check the intake for grass or debris, which can reduce flow even in small quantities
• Dry fully before storage, especially before overnight storage in cold conditions

Seasonal Checklist

Start of Season

Before your first ride each year:

1. Full visual inspection of the hull for cracks, stress marks, or impact damage
2. Check the jet pump and impeller for wear or debris from the previous season
3. Inspect charging cables and connectors for any corrosion or damage
4. Check for firmware updates for the battery management system
5. Test the battery: charge to full, check that range and charge time are within normal range
6. Confirm kill switch and safety features are functioning

End of Season / Winter Storage

1. Clean the craft thoroughly and allow it to dry completely
2. Charge the battery to approximately 80% before storage
3. Store the battery indoors at moderate temperature, away from direct sunlight and extreme cold
4. Cover the hull to protect against dust and UV exposure
5. Check battery charge level every 4–6 weeks during storage
6. Do not store with a fully charged or fully depleted battery

Frequently Asked Questions

How often does an electric jet ski need servicing? For ROXEN, there is no required annual engine service. The main tasks are post-ride cleaning, battery care, and a seasonal inspection of the jet pump and hull. Compared to petrol watercraft, the service burden is minimal.

How do I maintain a ROXEN battery? Store at 40–60% charge when not in use, avoid full discharge, charge at room temperature, and keep contacts dry. With these habits, the battery is built to last many seasons of regular use.

Can I ride a ROXEN in saltwater? Yes. ROXEN is built for both saltwater and freshwater use. After saltwater sessions, a thorough fresh water rinse of the hull, intake, nozzle, and metal parts is essential to prevent salt buildup and corrosion.

Do I need to winterise an electric jet ski? Not in the same way as a petrol model. There is no engine flush, no fuel stabiliser, and no oil to drain. For winter storage, clean and dry the craft fully, store the battery indoors at 40–60% charge, and check it every few weeks.

How do I clean the jet intake on a ROXEN? After each ride, flush the intake and nozzle with fresh water to clear any sand, seaweed, or vegetation. If you ride in shallow water frequently, inspect the intake visually before each session as well.

What should I do if my ROXEN's range decreases noticeably? A gradual reduction in range over many seasons is normal as the battery ages. A sudden change may indicate a battery issue, a blocked intake, or a software fault. Contact ROXEN support if the drop is significant or unexpected.

 

ROXEN is designed to spend more time on the water than in storage. With a consistent post-ride rinse, smart battery habits, and a seasonal check, the craft is ready whenever you are.

For related guides, see the electric vs fuel cost comparison and the ultimate guide to buying an electric watercraft.

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Published by ROXEN Academy, a blog by ROXEN Innovations.