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CTEK CS FREE is the world’s first truly portable battery charger and maintainer with Adaptive Boost technology.

You can charge and maintain any 12V lead-acid or lithium vehicle battery anywhere without being connected to a power outlet. And if your battery’s flat, CS FREE’s revolutionary Adaptive Boost technology will get you going within 15 minutes.

Portable charging and maintaining you can take anywhere without being tied to a power outlet
• Internal battery lasts up to a year when fully charged
• Adaptive Boost, to safely get you going from a flat battery within 15 minutes
• Can be charged up and powered by solar or 12V battery for longer-term maintenance charging
• No modes to select – just turn it on, connect and the CS FREE will do the rest
• Countdown function shows you how long there is left before your battery is fully charged
• USB-C and USB-A outputs for charging tech like laptops, smartphones & tablets
• New ergonomic design with a tough and durable case
• 2 year ‘peace of mind’ warranty

Additional Accessories available include:

• Alligator clips for the DC input so you can use a battery to charge another battery. (DC to DC charger)
• Solar Panel (60W) to recharge the onboard battery or pass-through to charge anything connected to the CS Free's USB-A, USB-C or Alligator Clips.
• Cig Plug DC input so you can charge your CS Free from a cig-plug adaptor. This allows you to recharge the internal battery and charge/power the outputs.