Ctek 40-462 CS Free - 12v Portable Charger

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  • Regular price £249.95

Portable charging and Adaptive Boosting you can take anywhere. The CS FREE: it’s a fully portable 12V Power bank for your vehicle.

  • No need to be tied to a power outlet.
  • Internal battery charges up within 1 hour.
  • Stays fully charged for up to a year.
  • Adaptive Boost gets your flat battery safely charged up within 15 minutes without damaging your vehicle’s electronics.
  • Charges and maintains all types of lead acid and lithium batteries and keeps them in peak condition.
  • Simple to use – no modes, just a clear, easy to read display.
  • Charges up your portable tech – smart phones, tablets and laptops etc.
  • Recharge or power from service battery and solar.

Flat battery? No problem! 

Maybe you don’t use your vehicle every day, or you have a car, motorcycle or another leisure vehicle that only gets taken out every now and then – or you keep it in storage over the close season.  One day you decide to take it out but – and probably not for the first time – you find your battery’s flat. So what happens next – how do you revive a dead battery?
If your vehicle’s near a power outlet and you already own a battery charger – or you can borrow a friend’s – you should be able to connect it all up and the vehicle might be good to go in a few hours. 
But what if you’re nowhere near a power outlet and you need to get going a lot quicker?  It doesn’t matter how powerful your regular battery charger is – if you can’t plug it in anywhere, it’s no use to you. 

You could be stuck at the side of the road, in a public car park or out in the wild – but if your battery’s flat and you can’t get power, you’re not going anywhere.


Free yourself from a flat battery with the CS FREE! 

Wherever you are, simply reach for the CS FREE that will give life back to your battery using our unique Adaptive Charging Technology. It’s totally safe for the vehicle, the battery and you – and you will be back on the road within 15 minutes.

What is Adaptive Boost?

The CS FREE is an Adaptive Booster that will get you going from a flat battery within 15 minutes. It automatically analyses the state of the battery and works out the safest way of giving it enough power to start the vehicle. Unlike most boosters or jump starters, the CS FREE is sensitive to the state of the battery and only gives it the charge it needs to get you started. So it's a 12V power bank for your car or other vehicle that is completely safe for the battery and your vehicle electronics.

Technical data

  • Battery capacity: 10-130 Ah
  • Battery capacity CEC-400: 10-130 Ah
  • Charging category: AC charging; DC charging
  • Battery voltage: 12 V
  • Battery chemistry: Lead acid; Lithium-ion
  • Ambient storage temperature: -20 °C to +45 °C (-4 °F to +113 °F)
  • Ambient operating temperature: -20 ˚C to +50 ˚C (- 4 °F to +122 °F)
  • Cooling: Natural convection
  • Start voltage: 3.0 V
  • Frequency: 50-60 Hz
  • Input: USB-C, 5 VDC – 25 VDC, 3 ADC/60 W max
  • Output: 12 V, 20 A/240 W max
  • Battery types: 12 V: WET; MF; Ca/Ca; AGM; EFB; GEL; LiFePO₄
  • Rated voltage (Input): 100 VAC – 240 VAC
  • Degree of protection: IP54
  • Dimensions (L x W x H): 9.8 x 3.9 x 3.1 in
  • Dimensions (L x W x H): 248 x 98 x 78 mm
  • Enclosure material: Plastic
  • Net weight (unit with cables): 1.4 kg
  • User interface: LED symbols
  • Net weight (unit with cables): 3 lbs
  • Detachable charging cable length (ouput): 2 m
  • Internal battery capacity: 66 Wh
  • Internal battery charge temperature: 0˚C to +45˚C (32˚F to 113˚F)
  • Internal battery discharge temperature: -20 ˚C to +50 ˚C (- 4 °F to +122 °F)
  • Internal battery shelf life: 1 year
  • Internal battery weight: 0.5 kg
  • Mains adapter cable length: 1 m
  • Mains adapter cable type: USB-C
  • USB-A Output: 5 VDC, 2.4 ADC/12 W max
  • USB-C Output: 5 VDC, 9 VDC, 12 VDC, 15 VDC, 20 VDC, 3 ADC/60 W max
  • Mains adapter input: 100 VAC – 240 VAC, 50 Hz – 60 Hz, 60 W max
  • Mains adapter output: USB-C, 5 VDC – 20 VDC, 3 ADC, 60 W max
  • USB: USB-C input
  • Internal battery cell chemistry: Polymer Lithium-Ion
  • Internal battery cell type: Pouch Cell
  • Internal battery life span: 300 cycles, 80%
  • Warranty: 2 years
  • Warranty, info: Limited Warranty
  • Warranty, details: CTEK issues a limited warranty to the original purchaser of the product. Depending on the product, the limited warranty period will vary. The limited warranty is not transferable. The warranty applies to manufacturing faults and material defects. The warranty is void if the product has been handled carelessly or repaired by anyone other than CTEK or its authorized representatives. CTEK makes no warranty other than this limited warranty and is not liable for any other costs other than those mentioned above, i.e. no consequential damages. Moreover, CTEK is not obligated to any other warranty other than this warranty.