Ctek 40-725

12V, 15 A
Delivered between Wed, 22.4. and Wed, 29.4.
More than 10 pieces in stock at supplier
free shipping

Product details

The CTEK NXT 15 40-725 is a state-of-the-art car battery charger designed with a maximum charging power of 15 amps for a variety of applications. It is ideal for cars, boats, motorhomes, and vans, providing a reliable and efficient charging and maintenance solution for all common 12V lead-acid and lithium batteries (LiFePO₄). With its robust construction and Swedish technology, the NXT 15 ensures a long lifespan and high performance. The patented desulfation and reconditioning modes allow for the revival of even deeply discharged batteries, extending their lifespan. Additionally, the charger offers versatile features such as a supply mode for diagnostic work and automatic temperature compensation, ensuring optimal charging conditions in extreme temperatures. The CTEK NXT 15 is fully automatic, spark-free, and equipped with reverse polarity protection, guaranteeing maximum safety during the charging process.

  • Maximum charging power of 15 amps for fast charging times
  • Patented desulfation and reconditioning modes for lifespan extension
  • Automatic temperature compensation for optimal performance in extreme temperatures
  • Fully automatic operation with reverse polarity protection for maximum safety.

Key specifications

Vehicle
Auto
Suitable battery technology
AGMLead-Acid WETLithium
Safety function
Reverse polarityShort circuit

General information

Item number
65900281
Manufacturer
Ctek
Category
Car battery chargers
Manufacturer no.
40725
Release date
22.12.2025
Sales rank in Category Car battery chargers
98 of 972
External links

Battery charger properties

Vehicle
Auto
Suitable battery technology
AGMLead-Acid WETLithium
Voltage
12V
Charging current (max)
15 A
Charging current at 12V
15 A
Min. ambient temperature
-20 °C
Max. Ambient temperature
50 °C

Safety

Protection type (IP code)
IP44
Safety function
Reverse polarityShort circuit

Voluntary climate contribution

CO₂ emissions
37.3 kg
Climate contribution
CHF 0.90

Product dimensions

Length
23.50 cm
Width
13 cm
Height
6.50 cm
Weight
1800 g

30-day right of return
24 Months Warranty (Bring-in)
1 additional offer

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Goes with

Reviews & Ratings

Warranty score

How often does a product of this brand in the «Car battery chargers» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 1.Ctek
    0.3 %
  • 2.Dino
    0.4 %
  • 2.Tecmate
    0.4 %
  • 4.Bosch Automotive
    0.5 %
  • 4.Einhell
    0.5 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 1.AEG
    0 days
  • 1.Einhell
    0 days
  • 3.Ctek
    1 day
  • 4.Noco
    2 days
  • 5.Victron Energy
    3 days

Return rate

How often is a product of this brand in the «Car battery chargers» category returned?

Source: Digitec Galaxus
  • 1.GYS
    1.1 %
  • 1.Osram
    1.1 %
  • 3.Ctek
    1.3 %
  • 3.Tecmate
    1.3 %
  • 5.Qoltec
    1.4 %
Source: Digitec Galaxus