CTEK NXT 5 Smart Battery Charger 4.3A 12V - Universal | 40-658

Keep your vehicle ready to perform with the CTEK NXT 5 NA Smart Battery Charger, engineered for advanced battery maintenance, recovery, and long-term reliability. Designed with award-winning Swedish technology, this charger delivers safe, fully automatic charging for both 12V lead-acid and lithium (LiFePO4) batteries.

With its connect-and-forget functionality, the NXT 5 automatically analyzes your battery and applies the optimal charging program. Whether you're maintaining a daily driver, performance car, or seasonal vehicle, this charger ensures maximum battery life, improved performance, and reliable starts every time.

Key Features & Benefits

• 4.3A fully automatic smart charger for effortless operation
• Compatible with 12V lead-acid & lithium (LiFePO4) batteries
• Supports batteries from 1.2Ah to 160Ah
• Reconditioning & desulfation modes restore deeply discharged batteries
• Automatic temperature compensation for optimal charging in extreme climates
• AGM optimization mode for modern start/stop vehicles
• Spark-free operation & reverse polarity protection for safe use
• IP65-rated durable housing for shop or garage environments
• Compact, lightweight design with rugged construction

Technical Specifications

• Output: 14.4 / 14.7 / 15.8V – 4.3A
• Input: 110–120V AC
• Battery Types: WET, MF, Ca/Ca, AGM, EFB, GEL, Lithium (LiFePO4)
• Operating Temperature: -4°F to 122°F
• Protection Rating: IP65 (dust & splash resistant)
• Warranty: 5-Year Manufacturer Warranty

Why Choose the CTEK NXT 5?

Unlike basic trickle chargers, the CTEK NXT 5 is a true smart charger that not only charges but also extends battery life and restores performance. Its advanced reconditioning technology helps revive weak or drained batteries, making it ideal for performance vehicles, daily drivers, and long-term storage applications.

This is a go-to solution for enthusiasts who want reliability, safety, and professional-grade battery maintenance without complicated setup.

Best Use Cases

• Maintaining stored or seasonal vehicles
• Charging daily drivers and performance cars
• Supporting AGM and start/stop systems
• Recovering deeply discharged batteries
• Garage, shop, or home use