CS ONE (Gen 2) UK

Powerful Simplicity. Elite Performance.

Tap into true charging intelligence with the CS ONE (Gen 2) – the world’s most technologically advanced battery charger that is also the easiest to use.

CS ONE brings a new era of convenience and innovation. With polarity-free charging, all you need to do is plug it into a power outlet, connect it to any 12V vehicle battery and let it handle everything automatically. It will do all the thinking for you, consistently delivering optimal performance.

Smarter. Connected. Fully in Control.

With the new generation of CS ONE comes a major update to the CTEK App, giving you more insight, control and functionality than ever before. With Wi-Fi connectivity at its core, you’ll enjoy complete oversight of your charging – anytime, anywhere.

• Monitor remotely – keep track of charging sessions in real time
• Stay informed – receive updates, reminders and push notifications
• Full transparency – view and export detailed charge histories and event logs
• Smarter tracking – follow individual charging phases and real-time state of charge

Unlock additional features!

The CS ONE has no buttons to press or modes to select when charging, but if you want to unlock additional functionality, you can do so through the CTEK App.

• RECOND – restore and recondition lead-acid batteries for improved battery health
• WAKE UP – for lithium batteries with under voltage protection or deeply discharged lead-acid batteries
• SUPPLY – support the battery during service work and retain contact power to the vehicle during battery replacement or removal

APTO™ Technology = Fully Adaptive Charging

The CS ONE, powered by revolutionary APTO™ technology, takes battery charging to an entirely new level. Instead of fixed programs and guesswork, APTO automatically adjusts to deliver the optimal charge for your specific battery, every single time.

This advanced technology continuously detects and adapts to key factors that affect charging:

• Battery type – works with all 12V batteries, including lead acid (WET, Ca/Ca, AGM, GEL, EFB) and lithium (LiFePO4).
• Battery health – offers dedicated maintenance modes for both lead acid and lithium, while also detecting damaged cells.
• Temperature – senses whether it’s hot or cold and adjusts output for the safest, most effective charge.
• Battery size – equally suited for motorbikes, cars, vans, RVs, and more.
• Polarity – with polarity-free clamps, you can connect without worrying about positive or negative – CS ONE recognises it automatically.

With the CS ONE, charging really is as easy as plugging in. It’s smart, it’s safe, and it takes all the thinking off your hands.

CS ONE Accessories

Elevate your charging experience by using CS ONE’s optional accessories.

CS CONNECT ADAPTER CABLE

Easily attach your CS ONE charger to the full range of CTEK CONNECT accessories. The Adapter Cable ensures seamless compatibility and a secure, reliable connection every time.

CS CONNECT U TERMINAL

Perfect for hard-to-reach batteries, this U Terminal allows for a permanent, safe connection to your car battery – ready whenever you are.

CS ONE BUMPER

Shield your CS ONE from knocks and scratches while improving grip on smooth surfaces. Made from tough, flexible silicone rubber, the Bumper fits snugly around your charger for maximum protection.