Ctek CS ONE (Gen 2)

12V, 8 A
31Ratings
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Product details

The CTEK CS ONE (Gen 2) is a state-of-the-art 12V battery charger designed specifically for vehicle owners looking for a reliable and user-friendly battery maintenance solution. With a maximum charging capacity of 8 amps, this device offers an efficient and effective way to charge and maintain car batteries. The innovative APTO technology allows the charging process to automatically adapt to the specific needs of the battery, ensuring optimum performance. Connectivity via Wi-Fi and Bluetooth allows users to access advanced functions and conveniently control battery maintenance via the CTEK app. Ease of use is further enhanced by the polarity-free terminals and automatic detection of battery type and condition. The CS ONE (Gen 2) is therefore the ideal choice for anyone who values quality and efficiency.

  • APTO technology for automatic, on-demand charging
  • Wi-Fi and Bluetooth connectivity for advanced functions via the CTEK app
  • Detection of battery type and condition for customised charging programmes
  • Includes reverse polarity protection for added safety.

Key specifications

Vehicle
Auto
Suitable battery technology
Lithium
Loading programs
Conservation mode, Reconditioning
Safety function
Reverse polarity

General information

Item number
66474734
Manufacturer
Ctek
Category
Car battery chargers
Manufacturer No.
CT40-703
Release date
20.1.2026
Sales rank in Category Car battery chargers
20 of 976
May include power adapter
No

Battery charger properties

Vehicle
Auto
Suitable battery technology
Lithium
Loading programs
Conservation mode, Reconditioning
Voltage
12V
Charging current (max)
8 A
Charging current at 12V
8 A

Safety

Safety function
Reverse polarity

Origin

Country of origin
China

Voluntary climate contribution

CO₂ emissions
29.26 kg
Climate contribution
CHF 0.70

Package dimensions

Length
30.50 cm
Width
18.60 cm
Height
6.80 cm
Weight
1.08 kg

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

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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.Tecmate
    0.3 %
  • 2.Bosch Automotive
    0.4 %
  • 2.Ctek
    0.4 %
  • 2.Dino
    0.4 %
  • 5.Victron Energy
    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
    2 days
  • 4.Noco
    3 days

Return rate

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

Source: Digitec Galaxus
  • 1.Kraftmax
    0.6 %
  • 2.Tecmate
    1.1 %
  • 3.Ctek
    1.3 %
  • 4.GYS
    1.5 %
  • 5.Noco
    1.7 %
Source: Digitec Galaxus