NXT 15 UK, 40-726 | ctek.com

NXT 15 UK

The NXT 15 is a tough, high-performance 15A battery charger designed to handle any type of 12V battery. Award-winning Swedish technology offers versatile modes like reconditioning, supply mode and temperature compensation – ensuring fast and dependable charging and maintenance – whether performance cars, boats or leisure vehicles.

Part no. 40-726

15 A power for faster charging and consistent performance

Supports 12V lead acid & lithium* batteries (20-350Ah)

Supply mode delivers constant power (13.6V/15A) to support the battery

Automatic temperature compensation for extreme weather

Fully automatic, spark-free and reverse polarity protected

Description


12V | Take charging to the next level with NXT 15, a powerful, high-performance 15A charger. Fast, efficient charging of 12V lead-acid and lithium batteries, with temperature compensation for freezing winters. For cars, powerboats and leisure vehicles


Introducing the NXT 15 battery charger. It’s a powerful, high-performance 15A charger, packed with award-winning Swedish technology – and with CTEK’s DNA running through it. NXT 15 ensures flawless charging and maintenance for 12V lead acid and lithium-ion batteries. Features include desulphation modes, reconditioning for deeply discharged batteries, constant 13.6V supply mode, and built-in temperature sensor for optimal charging in any weather. It’s fully automatic so just ‘connect-and-forget’– safe, spark-free and perfect for performance vehicles, boats, caravans, trucks and more.

Features


  • 15 A power for faster charging and consistent performance.
  • Supports 12V lead acid & lithium* batteries (30-350Ah).
  • Supply mode delivers constant power (13.6V/15A) to support the battery.
  • Automatic temperature compensation for extreme weather.
  • Fully automatic, spark-free and reverse polarity protected.
  • Compact design with robust rubber cables.
  • Patented desulphation & reconditioning modes restore battery life.
  • Convenient ‘connect-and-forget’ usability.
  • Backed by a 5-year warranty for total peace of mind.
  • Award-winning Swedish technology for unmatched performance.
NXT 15 high-performance charger connected to car

NXT 15: High-Performance 15A Battery Charging

Powerful 15A Performance: NXT 15 Delivers Professional-Grade Charging

Experience the difference that real power makes with NXT 15. This high-performance charger delivers a robust 15A output for faster, more efficient charging for all 12V battery type – lead-acid or lithium (LiFePO4). Whether you're maintaining a performance car, powerboat or leisure vehicle, NXT 15 provides the muscle you need. 

The exceptional charging speed of NXT 15 doesn't compromise safety or battery health. Advanced circuitry ensures optimal power delivery throughout the charging cycle. Large batteries that take hours with ordinary chargers? NXT 15 cuts that time dramatically. And because it's fully automatic, you get professional results without professional expertise. 

Efficient Power Delivery with NXT 15

The 15A capability of NXT 15 represents a perfect balance of speed and control. Its powerful output charges batteries up to 350Ah efficiently. Charge performance vehicles with high-capacity batteries more quickly so you can get out on the road. You’ll also appreciate the quick turnaround between uses in marine applications.

Optimized Charging Programs in NXT 15

Smart technology enables NXT 15 to operate on both 12V lead-acid and lithium batteries. Each chemistry receives tailored charging parameters for maximum performance and longevity. Simply choose the mode option you require and NXT 15 does the rest. So whether you're charging a high-performance AGM battery or a standard marine battery, NXT 15 delivers optimal results every time. 

Constant Power When You Need It Most 

The versatility of NXT 15's supply mode opens new possibilities. During service and maintenance work, NXT 15 can provide stable power if you need to remove the battery. Testing electrical systems? The constant voltage ensures accurate diagnostics. Working on boats or RVs? NXT 15 keeps systems running while you work. This functionality transforms NXT 15 from a charger into an essential maintenance tool. 

Temperature Compensation Technology 

NXT 15’s automatic temperature adjustment takes battery care to the next level. NXT 15 uses intelligent sensors to manage charging perfectly under any condition, ensuring you never undercharge in cold conditions or overcharge when hot. This ensures quicker charging, prolonged battery life and reliable performance no matter the climate. 

NXT 15 charger from CTEK
NXT 15 charger from CTEK perfect for marine applications

Universal 12V Battery Compatibility: NXT 15 Handles Them All

Why limit yourself when NXT 15 charges everything? This versatile powerhouse supports all 12V battery types – lead acid, AGM, and lithium (LiFePO4). Handling batteries up to 350Ah with ease, NXT 15 has the modes you need to charge according to each battery chemistry. 

Modern vehicles with AGM Start/Stop batteries? NXT 15 handles them with ease. Lithium batteries in RVs or boats? NXT 15 delivers the precise charging curves they require. Traditional flooded lead acid batteries still get the proven charging profiles they need. This versatility makes NXT 15 an excellent charging solution for multi-vehicle households and professional users alike. 

Battery Support Mode: NXT 15 as Your Reliable Power Supply

Beyond charging, NXT 15 transforms into a dependable power supply. The dedicated supply mode delivers constant 13.6V at up to 15A output. This feature proves invaluable during vehicle diagnostics or when maintaining power during battery replacement. 

NXT 15's supply mode prevents memory loss in modern vehicles. Boat owners use it to power accessories without draining batteries. And because NXT 15 maintains stable voltage regardless of load changes, sensitive electronics stay protected. It's like having a professional workshop power supply in a compact, portable package. 

Built Tough for Professionals: NXT 15 Embodies CTEK Quality 

When professionals demand reliability, NXT 15 is top of the worksheet. The robust construction reflects decades of Swedish engineering excellence. Heavy-duty rubber cables resist oil, chemicals and mechanical damage. The compact housing protects sophisticated electronics while remaining portable and practical. 

CTEK backs every NXT 15 with a comprehensive 5-year warranty. That's confidence born from rigorous testing and proven performance. From circuit boards to connectors, each component meets exacting standards. NXT 15 delivers consistent results time and again. 

Engineered for Demanding Environments 

The durability of NXT 15 extends beyond basic toughness. Temperature compensation ensures reliable operation from freezing winters to scorching summers. Spark-free, reverse-polarity protected connections prevent costly mistakes. And the intuitive interface means anyone can achieve professional results safely. It's this combination of power, safety and reliability that makes NXT 15 the charger of choice for anyone wanting a true quality product. 

NXT 15 charging various 12V battery types in showroom
NXT 15 connected to boat battery system

Safe and Simple: NXT 15 Makes Professional Charging Accessible

Despite its professional capabilities, NXT 15 remains remarkably user-friendly. The 'connect-and-forget' operation is a real boost to user confidence. Just attach the clamps, select the correct mode and NXT 15 handles everything perfectly. Clear indicators show charging progress at a glance. 

Safety features protect both user and battery throughout the charging process. Spark-free design eliminates connection hazards. Reverse polarity protection prevents damage from incorrect hookups. And automatic temperature adjustments ensure safe charging in all typical weather conditions. Whether you're a seasoned mechanic or weekend enthusiast, NXT 15 delivers confidence with every charge. 

Choose NXT 15 for the combination of power and simplicity. It brings workshop-grade performance to anyone who needs reliable battery maintenance. And with award-winning CTEK technology at its core, you're getting proven innovation that professionals trust. That's the confidence that comes with NXT 15. 

Connect with CTEK on Socials

Are you interested in learning more about the CTEK brand, maximizing battery performance or sustainable charging? Follow us on @ctekcharging for inspiring updates and the latest news on our products and battery management solutions.