To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Adaptive Boost technology replaces the Adaptive Boost jump leads determines the safest way to restore discharged batteries to use within 15 minutes
Intelligent battery charging The CS FREE portable charges batteries, can be connected to the mains and connected to CTEK accessories can be connected. It enables completely independent charging anytime, anywhere
Intelligent trickle charging Batteries always in peak condition at home and even without mains power
High-tech power bank No electricity? No problem! Charge laptops, smartphones, tablets and cameras at any time via the USB-A or USB-C ports
Smart and simple No buttons or modes, just a clear, easy-to-read display. Countdown LEDs show the remaining time until the battery is fully charged
Independent of mains power for longer The accessories of CTEK enables connection to solar panels or 12 V single batteries via the CS FREE’s fast USB-C port for long-term maintenance charging