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CTEK CS FREE is the world's first truly portable battery charger with maintenance charging and Adaptive Boost technology. You can charge and maintenance charge all 12 V lead and lithium vehicle batteries without being plugged into an electrical outlet. And if the battery is empty, you can get started within 15 minutes with the revolutionary Adaptive Boost technology in CS FREE.
PORTABLE CHARGE, WHEREVER YOU GO
Just charge the internal battery in CS FREE and take it with you everywhere - it stays charged for up to a year. CS FREE has our revolutionary Adaptive Boost technology so you can get started quickly when a battery is discharged. CS FREE automatically analyzes the condition of the battery and adapts to the battery voltage level. It then develops the safest and fastest way to give your battery the power needed to start your car within 15 minutes. CS FREE works everywhere and can even get power from solar energy or a 12 V battery for longer maintenance charging.
- Portable charging and maintenance charging that you can take with you everywhere, without being dependent on an electrical outlet.
- The internal battery lasts for up to a year when fully charged.
- Adaptive Boost analyzes an empty battery safely so you can get started again within 15 minutes.
- Can be charged and powered by solar energy or 12 V batteries for longer maintenance charging.
- You do not need to select a mode - just turn it on and connect, and FREE will take care of the rest.
- The countdown function shows how much time is left until your battery is fully charged.
- USB C and USB-A ports for charging technologies such as laptops, smartphones and tablets.
- New ergonomic design with a robust and durable housing.
- 2 year warranty so you can feel safe.
- Worldwide delivery
- Fast shipping
- 30 days try at home