The Gen2 SLIM can be used with two different battery configurations:

• SLIM Performance Battery — 40V, 11S architecture
• SLIM Endurance Battery — 28V, 8S architecture

The SLIM is configured from the factory for the 40V SLIM Performance Battery. If you are using the 28V SLIM Endurance Battery, you must change both the controller settings and the SLIM electronics settings before riding.

 IMPORTANT: The SLIM and controller must be configured for the battery you are using. Using the wrong configuration can result in incorrect battery readings, incorrect power delivery and potential battery damage. Battery damage caused by incorrect configuration is not covered under warranty.

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Battery Configurations Explained

The two SLIM batteries use different electrical architectures.

SLIM Performance Battery — 40 V / 11S

The SLIM Performance Battery uses an 11S architecture, meaning 11 cells are connected in series to produce a nominal 40 V system.

This is the standard Gen2 architecture and provides the highest power and thrust of the two SLIM battery options.

SLIM Endurance Battery — 28 V / 8S

The SLIM Endurance Battery uses an 8S architecture, producing a nominal 28 V system.

The Endurance Battery is longer and narrower to achieve its increased capacity while maintaining the slim form factor. A 40 V version with the same capacity would require additional cells and result in a significantly longer battery and nose cone.

The 28 V architecture was therefore chosen to provide increased endurance while maintaining a practical SLIM form factor.

Performance vs Endurance

The two batteries provide different ride characteristics.

40V SLIM Performance

The 40 V Performance Battery provides:

• Higher peak thrust
• More punch and responsiveness
• More consistent power throughout the discharge
• The smallest and lightest SLIM battery option

28V SLIM Endurance

The 28 V Endurance Battery provides:

• Longer runtime
• Lower peak thrust than the 40V system
• A more gradual reduction in available power as the battery discharges

The Endurance Battery may feel less powerful as the battery reaches approximately 50% state of charge compared with the more consistent power delivery of the 40V Performance Battery.

Choose the battery that best suits your riding style, board, foil and desired runtime.

Charger Requirements

The two batteries must be charged with the correct charger.

• 40 V SLIM Performance Battery → 40 V charger
• 28 V SLIM Endurance Battery → 28 V charger

Do not use a 40 V charger to charge the 28 V SLIM Endurance Battery.

The 40V charger is supplied with the Gen2 SLIM system.

The 28V charger is not supplied with the SLIM Endurance Battery or SLIM system and must be purchased separately if required.

If you are a Gen1 user, your existing 28V charger may be compatible, provided it has the correct connector. Older 28 V chargers with the smaller connector may require an appropriate adapter.

Nose Cone Requirements

Both SLIM nose cones are supplied with the Gen2 SLIM system, so you do not need to purchase a separate nose cone when switching between battery types.

Always use the correct nose cone for the battery configuration you are using.

Configuring the Controller

The controller needs to know which battery architecture is installed so it can correctly interpret the battery telemetry and display the remaining battery level.

Factory Setting

The Gen2 SLIM is configured from the factory for:

11S / 40 V — SLIM Performance Battery

If you are using the SLIM Endurance Battery, change the controller setting to:

8S / 28 V

To Change the Battery Setting

1. Turn the controller ON.
2. Press and hold the Cruise Control trigger.
3. While holding the trigger, tap the Power button to enter the controller menu.
4. Release the trigger once you are in the menu.
5. Use the Power button to scroll through the menu until you reach Battery Serial Number.
6. Press and hold the Power button to select it.
7. The battery setting will display 11, representing the 11S / 40 V configuration.
8. Tap the Power button until the setting changes to 08.
9. Use the Cruise Control trigger to exit the menu and return to the main screen.

The controller is now configured for the 8S / 28 V SLIM Endurance Battery.

Switching Back to the Performance Battery

If you change back to the 40 V SLIM Performance Battery, repeat the process and change the setting back to:

11 — 11S / 40 V

8S = 28 V SLIM Endurance
11S = 40 V SLIM Performance

Correctly configuring the controller ensures the battery percentage and battery indicator are displayed correctly.

Configuring the SLIM Electronics

Changing the controller setting is only one part of the configuration.

The electronics inside the SLIM unit must also be configured for the battery you are using.

The SLIM uses this configuration to determine the appropriate power delivery and battery protection parameters for the selected battery architecture.

The SLIM is configured from the factory for the 40V Performance Battery.

If you are using the 28V Endurance Battery, you must use the Foil Drive App to change the battery configuration.

Using the Foil Drive App

Connect the SLIM to the Foil Drive App and select the appropriate battery configuration during the setup process.

The SLIM will save the selected configuration and remember it until you change it again.

If you only have one battery type, you only need to configure the SLIM once.

If You Have Both Batteries

If you own both a SLIM Performance Battery and SLIM Endurance Battery, you must change the SLIM configuration every time you switch between battery types.

For example:

Using the Endurance Battery:

1. Install the Endurance Battery.
2. Configure the SLIM using the Foil Drive App for the 28 V / 8S battery.
3. Configure the controller for 08 / 8S.
4. Use the correct 28 V charger and nose cone.
5. Ride.

Switching to the Performance Battery:

1. Install the Performance Battery.
2. Configure the SLIM using the Foil Drive App for the 40 V / 11S battery.
3. Configure the controller for 11 / 11S.
4. Use the correct 40 V charger and nose cone.
5. Ride.

You do not need to reconnect to the app every time you use the same battery type. The SLIM remembers its settings until they are changed.

Configuration Checklist

Before riding, confirm that all settings and equipment match the battery installed.

40V SLIM Performance Battery

• ✓ 40 V / 11S battery
• ✓ Controller set to 11
• ✓ SLIM electronics configured for Performance / 40V
• ✓ 40 V charger
• ✓ Correct nose cone

28V SLIM Endurance Battery

• ✓ 28 V / 8S battery
• ✓ Controller set to 08
• ✓ SLIM electronics configured for Endurance / 28V
• ✓ 28 V charger
• ✓ Correct nose cone

Important Safety Information

Never use the wrong battery configuration.

The controller and SLIM electronics must both be configured to match the battery installed.

Incorrect configuration can cause:

• Incorrect battery percentage readings
• Incorrect battery telemetry
• Incorrect power delivery
• Excessive battery stress
• Potential permanent battery damage

Battery damage resulting from incorrect configuration is not covered under warranty.

Think of the battery configuration like putting the correct fuel in a vehicle: the battery, charger, controller and SLIM electronics all need to be matched to the correct system.

If you are unsure which configuration your system is using, do not ride until the settings have been checked.