CTEK NXT 15 40-725 Smart Battery Charger 15A 12V for Lead-Acid and Lithium Batteries

Battery failure is the most common reason vehicles won't start, especially after periods of inactivity or in cold weather. The CTEK NXT 15 40-725 is a professional-grade smart battery charger that safely and efficiently charges and maintains 12V lead-acid and lithium (LiFePO4) batteries, ensuring reliable starts and extended battery life.

Who is it for

This charger is ideal for workshops, car enthusiasts, and owners of cars, motorcycles, boats, or caravans who need a powerful and versatile charging solution for batteries up to 300 Ah. It is suitable for both regular maintenance and recovery of deeply discharged batteries.

Main features

• 15A output current for fast charging of large batteries
• Compatible with 12V lead-acid (WET, MF, Ca/Ca, AGM, GEL) and lithium (LiFePO4) batteries
• 8-step automatic charging process including desulphation and recondition modes
• Supply mode for battery support during diagnostics or flashing
• Temperature compensation for optimal charging in all climates
• IP65 rated: splash and dust proof for safe use outdoors
• Spark-free and reverse polarity protected

Specifications

• Input voltage: 220-240V AC, 50-60Hz
• Output voltage: 12V
• Output current: 15A
• Battery capacity range: 20-300 Ah (lead-acid), 20-200 Ah (lithium)
• Minimum battery voltage: 1.5V
• Operating temperature: -20°C to +50°C
• AC cable length: 1.5 m
• DC cable length: 2 m
• Display: LED indicators
• Housing material: durable plastic

Tips

For best results, connect the charger to the battery before plugging it into the mains. Use the appropriate charging mode for your battery type to maximise performance and lifespan. The charger can be left connected for long periods to maintain the battery at full charge.