SKU: 40518950278

CTEK CS FREE 12V 20A Portable Smart Battery Charger Maintainer Lead Acid Lithium

Sale price$144.87 Regular price$160.97
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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27

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Description

CTEK CS FREE 12V 20A Portable Smart Battery Charger Maintainer Lead Acid LithiumJust 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 CS FREE 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 for longer periods of time…well no worries! We some optional handy accessories to enable charging via solar panel or a 12V service battery.

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 ËšC to +50 ËšC (- 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; LiFePOâ‚„
  • 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: 0ËšC to +45ËšC (32ËšF to 113ËšF)
  • Internal battery discharge temperature: -20 ËšC to +50 ËšC (- 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
  • User Manual is accessible online

SIZE & WEIGHT

  • Product Dimensions (W x L x H): 98 x 248 x 78mm
  • Product Weight: 1.4kg

SKU: CTEK-40-462


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 cancelled 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: 40518950278

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4.5 ★★★★★
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Verified Purchase
T money
Waukegan, US
★★★★★ 4
Good
Size: 1-Gallon
I’ve used this sprayer for applying fertilizer, insect control, and watering plants, and overall it works really well for basic lawn and garden jobs. The pump builds pressure quickly, and the adjustable nozzle gives a nice range from mist to stream. I also like the translucent tank because it makes it easy to see fluid levels while mixing. The anti-clog filter is a nice feature and helped keep the spray consistent during use. It’s lightweight and comfortable to carry around the yard. The only reason I’m giving 4 stars instead of 5 is that some of the plastic parts feel a little lightweight, and I noticed a slight drip from the nozzle after extended use. Still, for the price and performance, it’s a solid sprayer and gets the job done well.
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Reviewed in the United States on May 10, 2026
S
Verified Purchase
S. Cain
Natrona Heights, US
★★★★★ 5
Keeps clothes on!
Color: Black, Size: Pack of 30
These hangers are fantastic! They save so much closet space, keep clothes from slipping, and feel sturdy and durable. Great quality for the price and make the closet look neat and organized!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
T
Verified Purchase
Trish
Charlottesville, US
★★★★★ 5
Had to order more!
Color: Ivory/Rose Gold, Size: Pack of 50, Color: Ivory/Rose Gold, Size: Pack of 50
Such great hangers that save space and provide true non-slipping of clothing. They came in handy as I got rid of ye old plastic hangers. My closet looks so much more organized and a little bit more spacious. They are lightweight and hold up very well. I did notice some hangers had "peeling" to them but I honestly didn't care since they are doing the work they are intended for. These are pretty versatile as I even have winter jackes hanging from them. The price is aslo very good in my opinion and on par with one of the big box companies my mom got hers from, but I like the fact that these come in various colors and finishes. The quantity options are also a blessing as I needed more than I initially opted for. Needless to say I liked them so much I had to order more. I also loved how well and neatly packed they came. 10/10 recommend!
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Reviewed in the United States on May 24, 2026
A
Verified Purchase
Amazon Customer
Natrona Heights, US
★★★★★ 5
Slim, sturdy, no slipping
Color: Black, Size: Pack of 100
I love these hangers! The velvet covering on them keeps clothes put, even silky items don’t fall off. I like that they have a small dip on both sides to help keep spaghetti straps even more securely in place Because they aren’t bulky you can utilize your closet space better. The metal hanger at the top also swivels which I find useful when hanging my clothes to steam. Great quality and quantity for the price!
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Reviewed in the United States on May 14, 2026
A
Verified Purchase
Amazon Customer
Whiting, US
★★★★★ 5
Arrived quickly, great price & item as described!
Color: Ivory/Beige, Size: Pack of 30, Color: Ivory/Beige, Size: Pack of 30
Feel sturdy, good grip bought 2 packs to organize my clothes l, Skinny Metal and hangers to help my clothes fit better in my smaller closet. Already assembled with easy to unwrap cardboard. Versatile hangers, that will make my life easier!
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Reviewed in the United States on May 24, 2026

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