CS FREE – The first portable charger

We are proud to introduce the CS FREE – a ground breaking new product, and a world first! It’s a  fully portable battery charger and maintainer that has unique Adaptive Boost functionality, to quickly and safely get you going from a flat battery – without mains power. In other words, it’s a 12V power bank for your vehicle that works with both lead‐acid and lithium (12V LiFePO4) batteries. Plus, it’ll keep your portable tech, like phones, laptops & cameras topped up too. It’s so simple to use, you can just charge it up, take it with you and use it absolutely anywhere!

Quick to get you going

Get going from a flat battery in just 15 minutes, wherever you, are with the CS FREE Adaptive Booster!

Charge it up!

Just charge up the CS FREE’s internal battery and you’ve got a 12V power bank that will stay fully charged until you need it – for up to a year. And what’s more, you can fully recharge your CS FREE in only one hour thanks to its USB‐C connectivity. 

No power? No problem!

If you have a car, a motorcycle, a boat or any other 12V vehicle and want to charge and maintain for longer periods of time...well no worries! We also have some great accessories for charging by a solar panel and even a 12V service battery. 


We have some handy accessories to enable charging via a solar panel or 12V service battery.



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.
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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 it’s a seasonal vehicle, like a snow-mobile, that is parked up for much longer periods of time. And so one day you decide to go for a drive or a ride – and many of us have been there – you find that you have a dead battery. So what happens next – how do you revive a flat 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 if you are nowhere near a power outlet, what do you do then? You could have the most powerful battery charger – but if you don’t have access to a power outlet, you can’t plug it in anywhere, it’s not much use to you at all. A flat battery could strike anywhere, leaving you stranded at the side of the road, in a car park or worse still, out in the middle of nowhere – so if you have a flat battery and you don’t have access to 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. The CS FREE is totally safe for the vehicle, the battery and you too – getting you back on the road within 15 minutes.


What is Adaptive Boost?

The CS FREE does not work in the same way that traditional boosters and jump starters do. It is incredibly sensitive to the state of the battery. Just like CTEK’s complete range of smart battery chargers, it will first automatically analyse the state of the vehicle battery and then work out the safest way of giving it enough power to start the vehicle. So whatever size and state of the battery, the CS FREE will only give it the charge it needs to get you started. This means you can use it on any vehicle, truck, car, motorcycle or other vehicle safe in the knowledge that it is completely safe for the battery and your vehicle electronics.




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