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CTEK

CTEK CS Free®, 12V Portable Battery Charger, 4-in-1 Charger with Hi-tech Power Bank, for Car, Phone, Computer, Smart Battery Maintainer, Jump Starter Alternative with Adaptive Boost Technology, Black

    • Based on 214 reviews
Condition: New
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$323.70 Why this price?
4th of July Sale · 5% off was $338.97

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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Jul 10
Order within 4 hours and 22 minutes
Available payment plans shown during checkout

Features

  • 4 Cutting-Edge Products in 1 Portable Unit Adaptive Booster, battery charger, smart maintainer and hi-tech power bank.
  • Adaptive Boost Technology Replaces the Need for Jumper Starters: Adaptive Boost works out the safest way to power up your dead battery to get you going within 15 minutes.
  • Smart Battery charging: Use CS FREE as a portable charger to top up your battery, connect to mains power, or hook up to a solar panel kit or 12V battery for complete charging freedom anywhere you go.
  • Smart maintainer: Keep your battery in peak condition at home or off grid.
  • Hi-tech Power Bank: No power? No problem. Charge up your laptops, smartphones, tablets and cameras whenever they need it with USB-A and USB-C ports.
  • Fit type: Universal Fit
  • Registered in the U.S. Patent and Trademark Office

Description

CTEK’s CS FREE is the world’s first multi-functional portable battery charger and smart maintainer with Adaptive Boost technology. You can charge and maintain any 12V lead acid or lithium battery anywhere using a power outlet, solar or leisure battery power. If your battery’s dead, CS FREE’s revolutionary Adaptive Boost technology will work out the safest and quickest way to power up your battery to get you going within 15 minutes. Use it as a portable charger to top off your battery plugging into a power outlet, or hook it up to a solar panel kit or 12V battery for complete charging freedom anywhere you go. CS FREE also features our revolutionary Adaptive Boost technology so if your vehicle won’t start, just connect it up and CS FREE will automatically analize the state of your battery. The CS FREE will work out the safest and quickest way to give the battery the power it needs to start your vehicle within 15 minutes. Unlike most ‘boosters’, CS FREE is sensitive and safe, avoiding damage to your battery or vehicle’s electronics by only giving it the charge it needs to get you going. CS FREE is also a smart maintainer and hi-tech powerbank to keep your battery and tech powered up so they’re always ready to go.


Brand: CTEK


Item Dimensions LxWxH: 9.8 x 3.9 x 3.1 inches


Specification Met: cs


Product Dimensions: 9.8"D x 3.1"W x 3.9"H


Brand: ‎CTEK


Specification Met: ‎cs


Product Dimensions: ‎9.8"D x 3.1"W x 3.9"H


Manufacturer: ‎CTEK, Inc.


Model: ‎CTEK CS Free®


Item Weight: ‎3 pounds


Country of Origin: ‎China


Item model number: ‎2005


Batteries: ‎1 Lithium Ion batteries required. (included)


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎40-462


OEM Part Number: ‎40-462


Date First Available: August 12, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jul 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • the future in battery charging
i own four ctek battery chargers. CS Free is all i need now. i give ctek battery chargers for gifts. they are the best on the market.
Reviewed in the United States 🇺🇸 on June 15, 2023 by redhorse
    • High quality Smart battery maintainer
I bought this battery maintainer due to the snow weather and working from home, and since my car is not near a power socket. It is the only one on the market that is a *portable* battery maintainer, booster, etc! I use it with the adapter clamps accessory(sold separately) and a service battery to keep my main battery topped off for really long periods of time specially in the winter. I’m glad a known company finally made one like this with all the advantages of a battery maintainer, but in a portable device. It really works at advertised! This portable battery maintainer will keep your battery topped off. It will prolong the car battery life when properly used as a maintainer. ... show more
Reviewed in the United States 🇺🇸 on March 2, 2023 by Reynaldo Miranda Vega
    • One important thing to be aware of
CTEK makes great products that appear to do what they are intended to do. But be aware - their customer service is non-existent. They just don’t respond. So if something goes wrong with your purchase you’re pretty much out of luck. Never seen anything like it - absolutely ZERO support after the sale. ... show more
Reviewed in the United States 🇺🇸 on December 6, 2021 by Bones Boy
    • Quality was not as expected
Item internal battery was not working , usb port went out of its place !! No customer service
Reviewed in the United States 🇺🇸 on December 9, 2022 by Talal
    • Easy to use. Peace of mind.
Review Image by John John
I used this to help keep my old and rarely driven SUV's battery at a proper state of charge. It worked as advertised. I liked how simple it was to use and I also like the idea that it is gentler on my old car's old battery than a traditional jump start would be.
Reviewed in the United States 🇺🇸 on February 8, 2023 by John John

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