SKU: 13475500101

CTEK CS FREE Portable Battery Charger and Maintainer for Lead Acid and Lithium with Power Bank

Sale price$192.15 Regular price$213.50
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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19

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Description

CTEK CS FREE Portable Battery Charger and Maintainer for Lead Acid and Lithium with Power BankJust charge up CS FREEs internal battery and keep it with you wherever you go, and itll stay fully charged for up to a year. CS FREE features our revolutionary Adaptive Boost technology to quickly get you going from a flat battery. CS FREE automatically analyses the state of your battery and adjusts to the batterys voltage level. It then works out the safest and quickest way to give your battery the power it needs to start your vehicle within 15

Just charge up CS FREE’s internal battery and keep it with you wherever you go, and it’ll stay fully charged for up to a year. CS FREE features our revolutionary Adaptive Boost technology to quickly get you going from a flat battery. CS FREE automatically analyses the state of your battery and adjusts to the battery’s voltage level. It then works out the safest and quickest way to give your battery the power it needs to start your vehicle within 15 minutes. CS FREE works anywhere and can even be powered by solar or a 12V battery for longer term maintenance charging.

The CS FREE is the world’s first fully portable battery charger and maintainer with Adaptive Boost to get your flat battery going quickly and safely – without the need for mains power. In other words, it’s a 12V power bank for your vehicle that works with both lead-acid and lithium (12V LiFePO4) batteries. Plus, it’ll keep your portable tech, like phones, laptops cameras topped up too. So simply charge it up, take it with you and use it anywhere!

QUICK TO GET YOU GOING

The CTEK CSFREE is a portable Adaptive Booster that will get you going from a flat battery within 15 minutes.

CHARGE IT UP!

Just charge up the CS FREE’s internal battery and you’ve got a 12V power bank that will stay fully charged until you need it – for up to a year. And with USB-C connectivity, you can fully recharge your CS FREE in just one hour!

NO POWER? NO PROBLEM!

If you have a car, a motorcycle, a boat or any other 12V vehicle and want to charge and maintain it for longer periods of time…well no worries! We have some optional handy accessories to enable charging via solar panel or a 12V service battery.

SPECIAL DEAL

This exclusive combo includes a CTEK Power Bank so that you can charge your electronic devices wherever you go!

Specification


  • Brand: CTEK
  • Model: CS FREE
  • Battery Capacity: 10-130 Ah
  • Battery Capacity CEC-400: 10-130 Ah
  • Changing Category: AC Charging; DC Charging
  • Battery Voltage: 12V
  • Battery Chemistry: Lead Acid; Lithium-ion
  • Ambient Storage Temperature: -20 °C to +45 °C (-4 °F to +113 °F)
  • Ambient Operating Temperature: -20 ˚C to +50 ˚C (- 4 °F to +122 °F)
  • Cooling: Natural Convection
  • Frequency: 50-60 Hz
  • Input: USB-C, 5 VDC – 25 VDC, 3 ADC/60 W max
  • Output: 12 V, 20 A/240 W max
  • Battery types: 12 V:; WET; MF; Ca/Ca; AGM; EFB; GEL; LiFePO₄
  • Rated voltage (Input): 100 VAC – 240 VAC
  • Degree of protection: IP54
  • Enclosure material: Plastic
  • User interface: LED symbols
  • Detachable charging cable length (output): 2m
  • Internal battery capacity: 66 Wh
  • Internal battery cell chemistry: Polymer Lithium-Ion
  • Internal battery cell type: Pouch Cell
  • Internal battery charge temperature: 0˚C to +45˚C (32˚F to 113˚F)
  • Internal battery discharge temperature: -20 ˚C to +50 ˚C (- 4 °F to +122 °F)
  • Internal battery lifespan: 300 cycles, 80%
  • Internal battery shelf life: 1 year
  • Internal battery weight: 0.5 kg
  • Mains adapter cable length: 1m
  • Mains adapter cable type: USB-C

IN THE BOX

  • 1 x CTEK CS FREE
  • 1 x CTEK Power Bank
  • Note: User Manual is accessible online

SIZE WEIGHT

  • Product Dimensions (W x L x H): 10 x 25 x 8cm
  • Product Weight: 1.4kg

SKU: CTEK-40-462-340


We accept Change of Mind returns for 14 days after you have received the item in cases where you have changed your mind or made an incorrect purchase and wish to return the product. This also applies to orders canceled when the item has already been dispatched from our warehouse. The item must be in a re-saleable condition to qualify for a change of mind refund. Deductions may apply including Initial and Return Shipping, as well as restocking fee of 10% of the product price

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 13475500101

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4.1 ★★★★★
Based on 14 reviews
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Product Reviews
G
Verified Purchase
Gladys
Battle Creek, US
★★★★★ 5
Honda crv filter
Size: 9.5" x 10.9" x 2.1"
Good cabin filter for my 2019 Honda crv
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
N
Verified Purchase
Netro
Lowell, US
★★★★★ 5
Easy to Install. Good Quality.
Size: 8" x 10" x 2"
Installing a cabin air filter is easier than one might think. There are also many videos online to demonstrate changing the filter on your particular vehicle. They do get dirty and can impede air flow. This is a higher quality filter and worth paying a few dollars more.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 4, 2023
S
Verified Purchase
Stephen Girardi
Birmingham, US
★★★★★ 5
Well worth it
Size: 8" x 10" x 2"
For my 2023 Honda pilot this was an awesome replacement and it smells actually very good. Well worth the money. Fit perfectly
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 29, 2024
J
Verified Purchase
Julie A. Curristan
Los Angeles, US
★★★★★ 5
All I need is the air that I breathe and to love you
Size: 8" x 10" x 2"
What a feeling! With the engine air filter changed, the engine was able to take deeper, longer breaths, eventually reaching that famous “runners high” you hear so much about. The new interior air filter changed the atmosphere into crisp, clean mountain fresh air, causing my passengers and me to spontaneously yodel with abandon. Here’s to believing!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 2, 2026
J
Verified Purchase
JM
Phoenix, US
★★★★★ 4
Wasn’t green but confirmed with Ecogard that it’s the correct filter
Size: 8" x 10" x 2", Size: 8" x 10" x 2"
As the title says the filter wasn’t green this time (purchased 3 other times). I read off the numbers to Ecogard technical support and they said it was their filter and by the date code manufactured by a different factory. This one was grey/black with blue edge and you could tell there was charcoal embedded in it. Not sure if it will perform the same and smell the same, as I preferred the scent of the green one. The listing needs to be updated with the correct picture if the green isn’t made anymore.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 11, 2026

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