Fliteboard eFoil — frequently asked questions

This is usually caused by a nearly empty or overheated Flitecell, less often by water getting into the battery compartment. Ride back to shore, go to a dry spot and check the charge level using the Flitecell LEDs. If there's still charge left, disconnect the power cables briefly and reconnect them. If you find water or damage, don't continue riding.

1. Get to a safe, dry, clean location, then open the lid
2. Check the Flitecell LEDs: only the red light = nearly empty (charge it); overheated = let it cool down (forced shutdown at 65°C)
3. If there's still charge, disconnect the power cables and reconnect them (observe the 10-second rule to avoid arcing)
4. Check the Flitecell and cavity for water/damage; if you find water, stop and contact support

This 'limp home' behavior is a protective feature: it's almost always caused by a nearly empty or overheated Flitecell. The board deliberately throttles power so you can still make it back. Head to shore quickly, get out of the water and charge the Flitecell — or let it cool down first before continuing to ride.

1. Interpret the warning: throttled power/low gears = protection mode, critical Flitecell warning on the controller
2. Head to shore in a controlled manner with reduced power, don't force anything
3. Address the cause: empty → charge safely; too hot → let cool down (warning at 55/60°C, shutdown at 65°C)
4. Motor Cool Down: brief throttling for about 1 minute, then full power again

In most cases, re-activating the motor, fully charging the controller, or re-pairing the devices helps. Solid blue at the back = connected; the board light blinking orange means you need to re-pair. Make sure only one controller and one board are switched on, and always pair devices one at a time.

1. Turn on the controller (hold the + button and mode button together for 3 seconds); if it won't turn on, charge it to at least 50%
2. If it shows 'Disconnected': re-activate the motor (pull the throttle lever fully and release it, press the minus button, then the throttle lever within 5 seconds)
3. Re-pair: close the lid (wait for the beep), place the controller base on the pairing target until the LEDs run orange; then hold the + button for 7 seconds until 'PRESS MODE TO COMMENCE PAIRING' appears, confirm with the mode button; light blue = paired, close the latch
4. Never pair multiple controllers/boards at the same time; never stay in pairing position longer than 30 seconds (otherwise it enters update mode)

Take the board out of the water, remove the Flitecell and dry the cavity completely. Then use the sight glass on the Flitecell to check whether water has gotten into the housing. If the indicator is red, the Flitecell is considered damaged: stop using it, don't charge it, store it cool/dry and contact support.

1. Take the board out of the water, remove the Flitecell, dry the board and cavity completely
2. Narrow down the leak: grain of sand on the seal, torn/shifted seal, worn-out hinges/latches or debris on the lid — replace a damaged seal, don't keep riding
3. Sight glass test: 1 min on the bottom, then 1 min on the side with the sight glass facing down; red sticker = water in the housing
4. If there's water in the Flitecell: don't use/charge it, store it cool and dry, contact support immediately
5. When reinstalling, make sure the cavity seal sits cleanly and is compressed

Slow down and reduce power draw so the Flitecell can cool off. The controller warns at 55 °C, warns again at 60 °C, and at 65 °C the Flitecell shuts down to protect itself. At a 50% warning, plan your return — at a critical charge level the board goes into power-saving mode.

1. Temperature warning: ride at low power so the Flitecell can cool down (shutdown at 65 °C)
2. Battery warning: plan your return at 50%; at a critical level head to shore immediately, the board throttles down to low gears
3. 'Board tilted' = lay it flat; 'High current' = motor cooling mode, reduce power; 'Controller charge low' = charge the controller
4. Keep an eye on charge level throughout the session, never go further out than you can swim back

Yes: to recalibrate, hold down the minus button (left) and the mode button (bottom) at the same time and follow the on-screen instructions. Often the issue is sand or salt in the throttle housing though — rinse the controller with fresh water and pull the throttle through its range several times. Also check whether the controller is charged.

1. Always test throttle response at the start of a session
2. If it's sticking: spray fresh water directly into the throttle housing while repeatedly pulling/releasing the lever
3. Recalibrate (Series 6): hold the minus button (left) + mode button (bottom) at the same time, follow the on-screen instructions
4. Before/after the season: undo the three screws on the bottom of the controller, remove the throttle assembly, clean and inspect the lever/spring/magnet

Disconnect the Flitecell power cables and remove the Flitecell. Then thoroughly rinse the board, cavity, seals, lid and eFoil with fresh water — mandatory after saltwater, otherwise salt speeds up corrosion. Afterwards let everything air dry, wipe it down, and protect the connectors with contact cleaner.

1. Open the lid slowly (don't let it fall on its nose), check the cavity for water
2. Remove the Flitecell; rinse the board, compartment, seals, hinges, lid and eFoil with fresh water
3. Rinse the inside of the mast through the recess at the back of the flange and the flange area; also rinse the carbon mast through the opening at the bottom of the hull
4. Rinse the Flite Controller, spray into the throttle housing, press the lever several times; clean and dry the rubber cover
5. Only wipe the Flitecell down with a damp cloth (don't submerge/hose it down); no flammable solvents, no WD-40/citrus/contact cleaner
6. Let everything dry completely before storing; loosen the eFoil/wings every 3 days and refresh the Tef-Gel

Clean and dry everything, store the board in its bag in a dry, shaded spot, and store the Flitecell separately, cool and partially charged. The recommended storage charge depends on the series: Series 6 recommends around 40%, Series 2 around 75%. Never store it fully charged or fully depleted.

1. Clean the board with fresh water, dry it completely, protect the contacts with contact cleaner, store in the bag away from sunlight
2. Flitecell charge for Series 6: approx. 40%, storage temp. 10–25 °C, recharge to approx. 60% every ~2 months (self-balancing)
3. Flitecell charge for Series 2: approx. 75% (2 LEDs), storage temp. 22–28 °C
4. Keep the Flitecell away from heat sources/hot cars, out of reach of children/pets, unplug the charger when not in use
5. Rinse the hinges, treat latches/hinges with WD-40 every few weeks (never on the anti-slip pad)
6. After extended storage, charge the Flitecell and controller to 100% before use (up to 24 hours)

The eFoil needs to be regularly serviced by an authorized Flite partner or Fliteboard headquarters — otherwise the warranty is void. Series 2: first service after 6 months, then every 12 months or 100 hours. Series 6: depending on the drive unit, every 100 hours/1 year or 200 hours/2 years.

1. Series 2: first mandatory service after 6 months, then every 12 months or 100 hours (whichever comes first)
2. Series 6: Prop-C every 100 h/1 year; Jet-C/Flitescooter-C every 200 h/2 years (whichever comes first)
3. Only an authorized service partner or Fliteboard headquarters; find the nearest partner at fliteboard.com/locations
4. Do a visual inspection yourself after every ride; work through the 6-month Flitecell checklist from the support page

Before every charge, check the Flitecell for damage and moisture, place it in a cool, dry, ventilated spot away from flammable materials, and connect the orange (positive) cable first, then the black (negative) cable. Activate charging with the magnet. Never charge a damaged or wet Flitecell — risk of fire/explosion.

1. Store the Flitecell cool/dry, away from heat/flammable materials/sunlight; before charging check for damage and a red sight glass (charging temp. 0–40 °C, ideally 10–30 °C)
2. Positive first: connect the orange positive terminal, then the black negative terminal; check the fit, then plug the charger into the mains
3. Hold the magnet against the Flitecell for 5–10 s (or the controller base) to activate charging; the charger switches off automatically once done
4. Don't charge right after a ride — let it cool down for about 30 minutes
5. Only charge under supervision, never cover the charger/air intake; after a full cycle let the BMS balance the cells

Check the Flitecell before every use. Warning signs: red sight glass (water), loose screws/rivets, a loose connector, cracks or deformation, unusual smell, high temperature while charging (60 °C or more). If you notice any of these: stop charging or using it and contact support.

1. Visual check: red sight glass, loose screws/rivets, loose connector, cracks, deformation, smell; stop using it after a fall or hard impact
2. Temperature limits: operating 0–40 °C, charging 0–40 °C (ideally 10–30 °C for Series 6); above 40 °C risk of overheating, below 0 °C risk of permanent damage
3. If a damaged Flitecell is in the water, remove it immediately, set it down safely/open until dry; after that stop using it and dispose of it properly; only use an original Flitecell
4. Never disassemble it; never open the lid in water or with wet hands (voids warranty, risk of water damage/fire)
5. If run time is decreasing: after a full charge, leave the magnet attached for one to two days so the BMS can rebalance the cells

Download the Flite App, make sure phone, Flitecell and controller are charged to at least 20%, and update in a fixed order: 1. Fliteboard, 2. eFoil, 3. Flite Controller. Always connect the app to the board/eFoil first, otherwise the Flitecell won't be visible. The controller must be switched off during this process.

1. Download the Flite App (iOS App Store / Android Play Store); phone, Flitecell, controller at least 20%, strong network connection, use the phone only for this
2. Board assembled and switched on, keep the lid closed; switch off Flite Controller
3. Let the app guide you through: 1. Fliteboard, 2. eFoil, 3. Flite Controller — always in this order (restart of 10–20 s possible, LED changes blue/purple/green)
4. Select 'Fliteboard' in the device menu (Flitebox LED purple / green during update), then check versions, install updates, sync sessions

Pull the throttle all the way through once and release it, briefly press the minus button and pull the throttle again within the 5-second countdown — now the motor is unlocked. Make sure beforehand that the propeller is clear. As a beginner, start at level 1 and increase gradually.

1. Pull the throttle fully once and release it completely
2. Press and release the minus button
3. Within 5 seconds pull the throttle to activate; check beforehand that the propeller is clear and the surroundings are safe
4. Starting level 1 on the lock screen; use +/- to adjust between 20 gears, fine-tune with your thumb while the throttle is fully pulled
5. Never run the motor on land for more than 3 s; wear the wrist leash, test the throttle at the start of the session

First pair the eFoil with the Flite Controller, place the controller in the mount on the handlebar and insert the handlebar into the socket. Turn the handlebar lock clockwise to the stop to lock it. Check beforehand that the socket is free of sand and gravel — only then will the handlebar sit securely.

1. Pair the eFoil with the Flite Controller before going into the water
2. Pull off the handlebar cap upwards; turn the handlebar over, slide the wrist leash over the lower end
3. Lift the rear latch, place the Flite Controller in the mount, close the latch
4. Turn the handlebar lock counterclockwise (opening aligns with the socket), check the socket for sand/gravel
5. Insert the handlebar, turn the lock clockwise to the stop — locked

This display shows that your Flitecell only has about half or less of its charge left. It's not a malfunction, but a planning cue: start now to consciously manage your remaining range and think about heading back, so you reach the shore with enough reserve — the next warning level will get tight.

1. Interpret the warning: charge level around 50% or below; the board runs normally, but only on half the energy
2. Plan the return trip plus buffer, don't head further out — never go further than you could swim back
3. Riding more economically (lower speed level) extends the remaining charge; monitor the charge level closely now
4. Be prepared for the next level: the critical warning demands an immediate return

Your Flitecell is almost empty — the controller is prompting you to return to shore immediately. The board limits itself to low speed levels to stretch the last bit of charge. Head straight back and don't force high power, otherwise a complete shutdown in the middle of the water is at risk.

1. Head immediately and without detours to the nearest safe exit point — final warning before running empty
2. Accept the power-saving mode: the board automatically throttles to low gears, don't fight against it
3. Don't charge immediately on land — let it cool down for about 30 minutes first, then charge safely; don't leave it deeply discharged for long

Your Flitecell has gotten too warm. Reduce power immediately and continue at a low speed level so the battery can cool down — otherwise the Flitecell will shut down for self-protection. The controller warns in stages, first at around 55°C and again at 60°C; at 65°C automatic shutdown occurs.

1. Lower the speed level immediately, avoid full throttle — less current flow, less heat
2. Warning levels: ~55°C first warning, 60°C second warning, 65°C automatic shutdown
3. Consider the triggers: heat, sustained full throttle, an already warm battery; plan breaks earlier in hot weather, don't charge right after a hot ride

'Board tilted' (Fliteboard tilted) means the board is temporarily locked due to its tilt angle — a safety feature: if it's leaning too much, the motor won't release power. Bring the board back to a flat, level position, then the controller will release the drive again.

1. Cause: the tilt sensor detects too steep a tilt angle (e.g. after a fall, while getting up, drifting upright); the motor stays deactivated for protection
2. Lay the board level and calm on the water surface again until the tilt angle is normal
3. Reactivate the motor (pull/release the throttle, minus button, then pull the throttle within 5 s) and continue riding

Both concern motor temperature. 'High Current' is an early warning: if you don't reduce power, the cool-down mode will activate. 'Motor Cool Down' means this mode is running — the board limits itself to low speed levels for about 1 minute. Ease off the throttle early at the 'High Current' stage, and you'll keep full power.

1. 'High Current' = early warning at high motor current (e.g. sustained full throttle/heavy load): lower the speed level now, then the cool-down mode won't kick in at all
2. 'Motor Cool Down' = cool-down mode active: the board runs in low gears for about 1 minute to cool the motor down (intentional protection, not a defect)
3. After cooling down, the board automatically releases full power again; a smoother riding style avoids triggering it again

This message isn't about the board battery — it's about the Flite Controller in your hand, and it needs charging. Fliteboard recommends getting it to at least 50% before every session. If it runs out of juice mid-session, you lose motor control. So make sure to charge it in good time before your next ride.

1. Identify the message correctly: it refers to the remote control's (Flite Controller) charge level, not the Flitecell — both are charged separately
2. Charge the controller: classic version via magnetic charging plug (pull off the rubber cover on the bottom), MN controller wirelessly on the charging dock; at least 50% before every session
3. Important: an empty controller means loss of motor control — build charging firmly into your prep routine

Flip the board over onto a clean surface, check the orange O-ring in the Flitebox cavity, and seat the Flitebox flush with the power cables routed through. Apply a thin layer of Tef-Gel to the four stainless steel screws and tighten them crosswise to 6 Nm — first by hand, then with the Torx wrench. Don't overtighten.

1. Flip the board over onto a clean, dry surface; the four retaining screws must be removed
2. Check the orange O-ring: it should sit cleanly in the groove, free of sand/grit/moisture (otherwise it will leak)
3. Seat the Flitebox in the cavity, route the power cables through, flush with the board surface
4. Apply a thin layer of Tef-Gel to the four M6-20mm stainless steel screws; tighten crosswise, first by hand, then with the Torx wrench, medium force = 6 Nm
5. The O-ring must be compressed; don't overtighten (thread/screws)

Apply Tef-Gel to every screw beforehand, otherwise you risk corrosion and seized screws. The tapered front wing (Series 6) is tightened to 16 Nm (M8), fuselage tail and stabilizer to about 6 Nm (M6). A shim goes between the stabilizer and the tail — it adjusts the lift. The rounded leading edge of the wing must face forward.

1. Front wing: apply Tef-Gel to the screws, tighten until nothing wobbles — Series 6 M8 tapered wing 16 Nm; Series 2 matching screw set, approx. 6 Nm
2. Fuselage tail (if fitted): apply Tef-Gel to the joint and tail screw (Series 6 M6×16mm / Series 2 M6×12mm), 6 Nm; MN carbon eFoils have no separate tail
3. Stabilizer: shim between stabilizer and tail, rounded leading edge facing forward (toward the front wing); apply Tef-Gel to the M6 screws, tighten firmly with no wobble
4. Choosing a shim: Series 6 shim 1.0 as standard (higher = more lift); Series 2 shims 0–5°, beginners 1–2
5. For extended mounting periods, loosen every few weeks and reapply Tef-Gel (corrosion protection)

Stand the board up on the front wing and nose, open the lid, and lower the Flitecell in by its handle with the warning sticker facing up into the cavity. Plug in the orange (positive) cable first, then the black (negative) cable, until it clicks. Close the lid, lock both latches — after a few seconds a "beep, beep, beep" confirms the board and Flitecell are on.

1. Stand the board on its front wing and nose, turn the latches, open the lid — never open it in the water
2. Lower the Flitecell in by its handle, warning sticker facing up, cables out of the way; insert the spacer (Sport/Nano) first if applicable; don't damage the seal
3. Connect orange to orange (click), then black to black; after disconnecting wait at least 10 s (arcing risk); press the button on the connector to release
4. Keep the seal clear, close the lid, lock both latches; 'beep, beep, beep' = powered on
5. No external board light? Open the lid, check the cable connection and the Flitecell light

Unscrew the valve cap and turn the center valve into inflate position (push down, turn counterclockwise until it pops up). Then bring the bladder up to the target pressure of 15–16 PSI (about 1 bar) with the pump — this value is crucial for stiffness, handling, and safety. Finally, disconnect the hose and put the cap back on.

1. Unscrew the valve cap counterclockwise
2. Turn the center valve into inflate position: push down, turn counterclockwise until it pops up (this holds the air in later when you remove the pump)
3. Attach the hose to the valve and bring it up to the target pressure of 15–16 PSI (about 1 bar) — important for stiffness and safety
4. Disconnect the hose, put the cap back on; if pressure is lost, put the valve back into inflate position and top up
5. Wash with warm soapy water and dry before storage; repair with the included kit

Start out lying down in level 1, then work your way up to your knees, and only stand up after that. Always keep your weight forward so the nose stays down and the foil stays in the water. Standing up works best at around 8–12 km/h with your weight clearly on your front foot — like coming out of a lunge.

1. Lying down: get on without stepping on the wing/mast, check gear 1, activate the motor, practice levels 1–3, weight forward
2. Onto your knees: at 6–8 km/h (gear 3–6), both hands on the board, slide your knees up just in front of the hinges (not on them), keep holding the throttle
3. Standing up: in open, flat water, at 8–12 km/h, front foot ahead of your knees, weight on the front foot (lunge position), chest/nose ahead of the front knee
4. Take-off: shift weight back slowly, once airborne foil low, do short 5-m sections, touch-and-go
5. Never put your weight on the back foot while standing up (the foil bites too early = fall); keep speed constant

Take at least one lesson at a Fliteschool, wear a helmet and impact vest, and pick calm water at least 1.5 m deep with no waves. If you're about to fall, let go of the throttle immediately and fall away from the board on purpose. Keep your weight forward and your speed constant — only start turning once you can foil straight confidently.

1. Preparation: at least 1 hour at a Fliteschool, helmet + impact vest/PFD, a companion/spotter is recommended
2. Spot: at least 1.5 m water depth, calm with no waves/current, keep distance from swimmers, motorized use permitted; never go further out than you can swim back, keep an eye on battery level
3. Falling technique: if a fall is imminent, let go of the throttle immediately (this stops the propeller), fall/jump away from the board in the direction you're falling
4. Foiling: keep speed constant, don't foil too slowly (stall risk), only turn once you're confidently going straight — wide arcs, more pressure on the back leg
5. Lighter riders should choose low-power mode, heavier riders a higher gear before activating

An 85 kg rider gets up to 1 hour 30 minutes with the Flitecell Explore; with a large wing at slow foiling speed, you can even get over 2 hours. Top speed is around 45 km/h. How far you get mainly depends on rider weight, speed, wing choice, and water/wind conditions.

1. Reference value: 85 kg rider with Flitecell Explore up to 1 hr 30 min; efficient riding (large wing, slow) over 2 hours
2. Influencing factors: rider weight, average speed, wing choice, water/wind conditions
3. Top speed around 45 km/h; check remaining range and remaining time via GPS on the Flite Controller
4. Plan your return trip early — turn back at the latest when you get the 50% warning

Fliteboard offers two drive types — Flite Propeller (Prop C) and Flite Jet (Jet C / Flitescooter C) — as well as many tapered wings, ranging from large, high-lift Cruiser models for beginners to small, fast wings. On top of that there are three Flitecell sizes (Explore, Sport, Nano) and accessories like Tef-Gel, shims, and chargers.

1. Drive: Flite Propeller (with Prop Guard) or Flite Jet (enclosed impeller); Prop C with Dual Drive can be swapped tool-free (Flite Jet 2 is not Dual-Drive)
2. Wings: large tapered wings (e.g. Cruiser) = lots of lift, stable, beginners/lighter riders; smaller ones = more speed, more demanding
3. Flitecell sizes: Explore (most range), Sport (medium), Nano (lightest); ULTRA L2/L3, AIR ICON/AIR PRO not compatible with Explore
4. Accessories: Tef-Gel + brush, shims/washers, prop guard tool, Torx/fastener wrench, fast/slow charger; RACE additionally gets handles + Mercury Racing impeller
5. For the exact wing/board combo based on weight and skill level: fliteboard.com/support or E-SURFER consultation

There are three Flitecells: Explore with about 2016 Wh (40 Ah), Sport with 1482 Wh (29.4 Ah), and Nano with 806 Wh (16.8 Ah). With the Fast Charger (25 A), Explore charges in about 1 hr 45 min, Sport in 1 hr 15 min, and Nano in 50 min. The slower charger (6 A) takes considerably longer.

1. Capacity/weight (Series 6 values): Explore ~2016 Wh (40 Ah) / ~14.5 kg; Sport ~1482 Wh (29.4 Ah) / ~10.6 kg; Nano ~806 Wh (16.8 Ah) / ~6.2 kg (Series 2 slightly different: Explore ~13.9 kg, Sport ~10.9 kg)
2. Fast Charger (25 A): Explore ~1 hr 45 min, Sport ~1 hr 15 min, Nano ~50 min
3. Standard/slow charger (6 A): Explore ~7 hr 30 min, Sport ~5 hr 30 min, Nano ~3 hr
4. Series 2 only has Explore and Sport (Nano was introduced only with Series 6); Series 2 premium charger 25 A = same Fast Charger times
5. About 400 charge cycles before dropping below 80% remaining capacity; never charge right after riding (let it cool for 30 min)

No. The Flitecell is classified as dangerous goods and may only be transported by a shipping company approved for hazardous materials. Declaring it as normal goods without informing the shipping service is illegal and dangerous. Shipping requires the Material Safety Data Sheet (MSDS) — always get advice from a specialist beforehand.

1. Flitecell is dangerous goods (high-power lithium battery) — only ship via a hazardous goods carrier/specialist
2. Never declare it as 'normal goods' without informing the shipping service (illegal and dangerous)
3. MSDS is required for shipping (air/sea) (fliteboard.com/MSDS); clarify requirements with a specialist beforehand
4. Service shipment: eFoil + Flite Controller in original foam/eFoil bag; do NOT include Flitecell, wings, or chargers
5. Disposal: never in household waste, fully discharge and dispose of in special recycling bins per local regulations

As long as the warranty is still valid, the mandatory service should be done by an authorized Flite partner (otherwise the warranty is affected). If the warranty has expired or you're far away from a service partner (shipping the drive unit is a hassle), you can do the oil change yourself with the EFS Fliteboard Service Kit (available at E-SURFER) — at your own risk, with special tools and the official how-to video.

1. Check the warranty: if the board is still under warranty → better go with an authorized Fliteboard partner (self-servicing can affect the warranty)
2. Self-servicing makes sense if: the warranty has expired and/or you're far away from a service partner (shipping the drive unit is impractical)
3. Choose your kit: Complete Kit (with pressure tester + tools) for the first time; Basic (wear parts only) if you already have the tools; get the oil separately
4. Do the oil change: replace the oil + all seals/O-rings of the drive unit (protects the motor from saltwater); interval 100 h/12 months
5. After the change, check for leaks with the pressure tester before saltwater can get in
6. Follow the official EFS how-to video strictly and work cleanly; use at your own risk
7. If the warranty is still active/you're unsure: go to an authorized Fliteboard dealer; kit + advice at E-SURFER (/de/shop/efoil/fliteboard-service-kit/)