Ctek 20A wireless charger CTEK CS 40-462

CTEK CS FREE – 4-in-1 wireless battery charger, jump starter and power bank

A universal 4-in-1 device that combines a 12 V battery charger, maintainer, “Adaptive Boost” jump starter and USB power bank. Suitable for 12 V lead-acid and LiFePO₄ lithium batteries with a capacity of approximately 10–130 Ah. The ideal solution for cars, motorcycles, boats, campers and other equipment where a 230 V socket is not available.

Key benefits

• 4-in-1: charger, maintainer, Adaptive Boost jump starter and USB powerbank
• The world's first truly wireless CTEK charging and maintenance device
• Works without direct 230 V connection - uses built-in battery
• Adaptive Boost technology - a discharged battery is ready to start in about 15 minutes
• Can be charged from 230 V, 12 V source or solar panel
• Suitable for both quick roadside assistance and long-term battery care
• LED indication shows minutes remaining until starting/full charge

Adaptive Boost – smart starting assistant

CS FREE automatically analyzes the battery condition and adapts to its current voltage. The device calculates the safest and fastest way to provide the necessary energy to start the vehicle in about 15 minutes, without using a classic “booster” or jump lead.

Charge and maintain anywhere

• Built-in battery – charge at home and take it with you wherever you go
• Charging from:
  • 230 V (USB-C adapter included)
  • 12 V source (e.g. car socket)
  • solar panel (with appropriate connection)
• Can maintain a full charge (unused) for up to 24 months
• Suitable for long-term maintenance charging while stationary

Powerbank function

• USB-A output: 5 V DC, 2.4 A (max. 12 W)
• USB-C output: 5 / 9 / 12 / 15 / 20 V DC, up to 3 A (max. 60 W)
• Suitable for charging laptops, smartphones, tablets, cameras and other devices

Compatible batteries

• Battery types (12 V): WET, MF, Ca/Ca, AGM, EFB, GEL, LiFePO₄
• Battery capacity: 10–130 Ah
• Min. battery voltage: 3.0 V

Technical data

• Output voltage/power: 12 V, up to 20 A / max. 240 W
• Safety class: IP54
• Weight (device with cables): approx. 1.4 kg
• Dimensions (W × D × H): 248 × 98 × 78 mm
• Warranty: 24 months

Included

• CTEK CS FREE device
• 230 V USB-C charging adapter
• Battery charging cables with terminals

Additional information

• Package dimensions (W × D × H): 290 × 188 × 86 mm
• Package weight: approx. 2.2 kg
• EAN barcode: 7340103404620