CTEK NXT 15 Smart Battery Charger - 12V 15A with Adaptive Boost

Experience next-generation battery charging with the CTEK NXT 15. Featuring advanced Adaptive Boost technology, Bluetooth connectivity, and 15A charging power, the NXT 15 delivers professional-grade performance with smart features. Works with all 12V battery types and includes app control for monitoring and customization.

Key Features:

• 15A charging current for fast, efficient charging
• Adaptive Boost technology for rapid charging when needed
• Bluetooth connectivity with CTEK app for monitoring and control
• Works with all 12V battery types (AGM, Gel, Flooded, Calcium, EFB, Lithium)
• 8-step fully automatic charging for optimal battery health
• Automatic maintenance mode prevents overcharging
• Recondition mode restores deeply discharged batteries
• Snowflake mode for cold weather charging
• IP65 rated - dust and water resistant
• Spark-proof and reverse polarity protected
• 5-year warranty

Performance Benefits:

• Adaptive Boost: Rapidly charges battery to 80% in minimal time when you need it fast
• Smart Connectivity: Monitor charging status and customize settings via Bluetooth app
• Professional Power: 15A charging current for faster charging than consumer models
• Universal Compatibility: Works with all 12V battery types including lithium
• Optimal Battery Health: 8-step charging maximizes battery life and performance
• Safe Operation: IP65 protection, spark-proof, reverse polarity protection

Specifications:

• Brand: CTEK
• Part Number: 40-727 (NXT 15 NA)
• Model: NXT 15
• Input: 100-120V AC (50-60Hz) - North America version
• Output: 12V DC
• Charging Current: 15A (max)
• Battery Capacity: 20-300 Ah (charging), up to 500 Ah (maintenance)
• Battery Types: All 12V (AGM, Gel, Flooded, Calcium, EFB, Lithium)
• Charging Steps: 8-step automatic charging
• Special Features: Adaptive Boost, Bluetooth connectivity, CTEK app
• Special Modes: Recondition, Snowflake (cold weather)
• Protection: IP65 (dust and water resistant)
• Safety: Spark-proof, reverse polarity protection, overcharge protection
• Warranty: 5 years
• Weight: 5.1 lbs
• Barcode: 7340103407270

Fitment Information:

• Universal Application: Works with any 12V battery
• Battery Types: AGM, Gel, Flooded, Calcium, EFB, Lithium
• Vehicle Types: Cars, trucks, motorcycles, boats, RVs, ATVs, UTVs, and more
• Battery Capacity: 20-300 Ah (charging), up to 500 Ah (maintenance)

What's Included:

• CTEK NXT 15 charger unit
• AC power cord
• Battery clamps with cables
• Eyelet terminal connectors for permanent installation
• User manual

How to Use:

• Download CTEK app (optional) for Bluetooth connectivity
• Connect charger to battery (red to positive, black to negative)
• Plug charger into AC outlet
• Select mode if needed (Normal, Adaptive Boost, Recondition, Snowflake)
• Charger automatically detects battery type and begins 8-step charging
• Monitor charging progress via LED indicators or app
• Charger automatically switches to maintenance mode when battery is full
• Can be left connected indefinitely for battery maintenance

Adaptive Boost Technology:

The revolutionary Adaptive Boost feature is what sets the NXT 15 apart from traditional chargers. When you need to charge your battery quickly, Adaptive Boost delivers maximum charging current to rapidly bring the battery to 80% capacity in minimal time. This is perfect for situations where you need to get back on the road quickly. Once the battery reaches 80%, the charger automatically switches to normal charging mode to safely complete the charge cycle.

Bluetooth Connectivity & CTEK App:

The NXT 15 features built-in Bluetooth connectivity that pairs with the free CTEK app (iOS and Android). Through the app, you can:

• Monitor real-time charging status and battery voltage
• View charging history and battery health data
• Customize charging settings and modes
• Receive notifications when charging is complete
• Access advanced diagnostics and battery information

8-Step Automatic Charging:

The CTEK NXT 15 uses an advanced 8-step charging process that optimizes battery health and longevity:

1. Desulphation: Removes sulphation from battery plates for improved performance
2. Soft Start: Tests battery condition before charging begins
3. Bulk Charge: Charges battery to approximately 80% capacity using maximum current (15A)
4. Absorption: Continues charging at declining current until battery reaches 100%
5. Analysis: Tests battery's ability to hold charge
6. Recondition: Restores battery capacity (when Recondition mode selected)
7. Float Charge: Maintains battery at 100% without overcharging
8. Pulse Maintenance: Keeps battery fresh during long-term storage

Recondition Mode:

The Recondition mode uses a controlled high-voltage charge to break down sulphate crystals that build up on battery plates over time. This can restore capacity to deeply discharged or neglected batteries, extending their service life. Use Recondition mode periodically to maintain optimal battery performance.

Snowflake Mode (Cold Weather):

The Snowflake mode optimizes charging for cold weather conditions (below 32°F/0°C). Cold temperatures reduce battery capacity and charging efficiency, so the Snowflake mode adjusts the charging algorithm to ensure optimal charging even in freezing conditions. Perfect for winter storage or cold climate use.

Maintenance Mode:

The NXT 15's automatic maintenance mode (also called float or pulse charging) keeps your battery at optimal charge during storage. This is perfect for seasonal vehicles like motorcycles, classic cars, boats, or RVs that sit unused for extended periods. Simply leave the charger connected, and it will maintain your battery without overcharging.

Safety Features:

• Spark-Proof: Safe to connect even if battery is installed in vehicle
• Reverse Polarity Protection: Prevents damage if you accidentally connect cables backwards
• Overcharge Protection: Automatically prevents overcharging
• Short Circuit Protection: Protects charger and battery from damage
• IP65 Rating: Dust and water resistant for outdoor use

Why CTEK?

CTEK is the world leader in battery charging technology, with over 20 years of experience developing advanced charging solutions. Their chargers are used by professional mechanics, dealerships, and enthusiasts worldwide. CTEK's patented charging algorithms ensure optimal battery health, maximum lifespan, and reliable performance. Every CTEK charger is backed by a 5-year warranty.

NXT 15 vs. MXS 5.0:

The NXT 15 offers several advantages over the popular MXS 5.0:

• 15A charging current vs. 5A (3x faster charging)
• Adaptive Boost technology for rapid charging
• Bluetooth connectivity with app control
• Lithium battery compatibility
• Handles larger batteries (up to 300 Ah vs. 110 Ah)

Perfect For: Car and truck owners, motorcycle riders, boat owners, RV enthusiasts, or anyone who wants professional-grade charging with smart features and rapid charging capability.

Pro Tip: Use Adaptive Boost mode when you need to charge quickly, then let the charger automatically complete the charge cycle for optimal battery health.

Next-Generation Charging: The CTEK NXT 15 represents the future of battery charging with Adaptive Boost technology and smart connectivity.

Experience next-generation battery charging with CTEK's NXT 15 - 15A power, Adaptive Boost, Bluetooth app control, and professional-grade performance.