CTEK - 40-206 MXS 5.0 Fully Automatic 4.3 amp Battery Charger and Maintainer 12V

4.7 4.7 out of 5 stars | 5,758 ratings

Price: 92.02

Last update: 01-04-2025


About this item

Battery Charger: MXS 5.0 is a fully automatic 8-step battery maintainer that provides an outstanding charging experience for 12-volt lead acid and AGM batteries , Ideal for car and bike owners.
Improved Charging: MXS 5.0 is designed to optimally charge in all conditions. Whether it's marine, car, bike, RV or tractor it's the perfect companion - especially for cold weather drivers!
Maximize Lifetime and Capacity: The 4.3 amp battery charger's reconditioning function can improve the lifespan of healthy batteries*, and bring some underperforming batteries back to life.
Splash and Dustproof: MXS 5.0 battery charger is splash, dust, spark and shock proof, making it a reliable and safe option with a short-circuit-proof design that prevents reverse polarity
Set and Forget: CTEK’s patented float/pulse charging allows ‘set and forget’ for months at a time without harming the battery. No need to disconnect the battery during use – it’s simply plug and play.

Product information

Technical Details


Top reviews from the United States

Jose V.
5.0 out of 5 stars Best battery charger I have ever owned
Reviewed in the United States on June 28, 2024
Small, powerful batter charger and more. I use it with my pickups, quads, farm vehicles. Easy to use and works exactly as it's supposed to. I liked it so much, I gave 2 as gifts to a friend and a Godson. They say they love theirs, too.
Michael
5.0 out of 5 stars Great charger
Reviewed in the United States on June 22, 2024
This product worked very well. It restored my dead battery. It took awhile, 11 days, but my battery is like new. My advice is once you connect the charger, be patient. It does take awhile to work. Additionally, it would be best to park your car inside while charging, since it does take awhile to charge.
SG
5.0 out of 5 stars Charge it!
Reviewed in the United States on April 12, 2024
These chargers are great little units that have a lot of power and extra optional circuitry. A little expensive, but well worth it. this charger will charge maintain and condition and can be hooked up for long periods of time. but always look in at your batteries when charging and follow directions. You will be happy with your purchase. Thank you
Michael A. Fazzio
5.0 out of 5 stars Really Great Trickle Charger
Reviewed in the United States on May 17, 2024
This device is easy to use and works well with my 2008 Porsche Turbo
JB Robinson
5.0 out of 5 stars MOST TECHNICALLY ADVANCED CHARGER
Reviewed in the United States on April 3, 2024
Many chargers out there are cheap, only have a constant voltage and will 'over cook' a battery on long charge. I have used several CTEC model chargers for years professionally at work and home on lead acid batteries and also a special charger for LiPO4 lithium batteries. The biggest benefit is it is automatic and has a nifty see-saw top off battery float. The bottom line is you can buy a CTEC with confidence you will have a long term asset life. It comes with various connectors and cables. I even wired in the 12 volt charger plug on my summer car with the plug hanging out the front just under the lid. This plug has a seal cap strapped on so you can drive the car and the plug is fully sealed against moisture. Well thought out. Very reasonable price for a long term asset.
alex
4.0 out of 5 stars Nice for the price
Reviewed in the United States on May 5, 2024
It revitalized my new battery that died from sitting in my driveway in the winter months. The battery fully recharged my battery. You have to keep it plugged up to your battery for 24 hours though. Expect resetting your car information though from the dead battery.
Digital Donkey
5.0 out of 5 stars The Gold Standard in Battery Care
Reviewed in the United States on June 15, 2024
In the world of battery chargers and maintainers, the CTEK - 40-206 MXS 5.0 stands tall as the undisputed champion. This little powerhouse is the gold standard, setting the bar high for performance and reliability.

From the moment you unbox it, the CTEK MXS 5.0 exudes quality. Its sleek design and robust build are just the beginning. This charger is fully automatic, meaning it takes the guesswork out of battery maintenance. Simply connect it, and let it work its magic.

The 4.3-amp output is perfect for maintaining 12V batteries, whether in your car, motorcycle, or even your boat. It’s like having a personal battery butler, ensuring your power source is always at peak performance. The various charging modes cater to different needs, from reconditioning deeply discharged batteries to maintaining a steady charge for those infrequently used vehicles.

Ease of use is another feather in its cap. The intuitive interface and clear indicators make it simple to operate, even for those who aren’t particularly tech-savvy. You can practically set it and forget it, confident that your battery is in good hands.

Performance-wise, the CTEK MXS 5.0 delivers consistently, breathing new life into old batteries and maintaining new ones in pristine condition. It’s a reliable companion, whether you’re preparing for winter storage or just ensuring your vehicle is always ready to go.

TL;DR: CTEK - 40-206 MXS 5.0: The gold standard in battery maintainers, offering top-notch performance, ease of use, and reliable maintenance for 12V batteries.
MAMNOH
5.0 out of 5 stars The Perfect Antidote To A Dead Battery
Reviewed in the United States on December 12, 2020
My car sits unused most of the time. I take it out on average once a month, if that, for short trips of less than 2 miles to grocery store, bakery, gas station. If my car is driven 10 miles per month, that's a lot. Two months ago, my 2012 vehicle had only just hit the 12,000 mile mark (most of that from two multi-state trips) and for the second time in 3 years, my battery was completely dead and needed replacing. This was a huge inconvenience since I was once again stranded with no way to start my car. When purchasing the new battery, a mechanic at the auto parts store suggested a trickle charger. How great! I never knew that I could plug a car that isn't a hybrid into a wall socket for recharging!!! I was immediately determined to purchase a charger and set about my thorough research. This Ctek MXS 5.0 charger was by far the best reviewed charger I could find anywhere and additionally, it is the only one I could find that has a setting specifically for AGM batteries. Despite what the compatability tool says on Amazon, it is actually a perfect match for my 2012 Hyundai Santa Fe Limited. Before purchasing, I read everything I could find about it and I was amazed at how simple it is to use. It's basically plug and play after hitting just one button for an initial setting. After that, it handles everything on its own, even recovering after a power outage with no intervention by the owner. It also has a 'Recondition' mode. It is recommended to, in a separate process, run your battery through 'Recondition' mode about once a year to add to the life span of the battery. I purchased it and brought the included eyelets to my mechanic and he installed them on my two month old battery. Upon connection, the charger started working immediately. Because my battery is basically new, it moved through each of the phases quickly, as evidenced by the lights on its front, and in minutes it got to the phase where it floats a charge to keep the battery always topped off. It can be left connected to the car battery and electrical outlet indefinitely, so I no longer have to worry about my car sitting idle or running out in the dead of Winter to start it. I looked at all Ctek accessories that can be purchased separately, and decided the only thing I needed was the bracket for mounting the charger to my garage wall. I wanted the charger sitting safely off the floor and did not want it sitting on the car itself. I purchased the simpler, least expensive of the two brackets available ($10.00) and it was the perfect solution. The charger has 6ft cords on each end. One that goes to the electrical outlet and one that connects to the 'comfort connect' port of the included clamps or eyelets. Because my electrical outlet is farther than 6 feet from the charger, I purchased a 20-foot 16AWG extention cord, which is just long enough, and no longer, to allow the charger to be plugged in. The rule is to get the shortest extension cord possible, and the manual clearly spells out the acceptable minimum AWG for various lengths of extention cord to be used. Again, the device is so simple to use, that the instruction manual is very short and concise, with little to read. The cord of the eyelets themselves is very short, I believe only 8 inches. They offer a longer one for purchase separately but that only gives you an additional 4 inches of length. My mechanic did extend the length of the eyelets several inches by splicing them to a longer piece of cord. The manufacturer says this is allowed in order to run the 'comfort connect' port of the eyelets through the grill of your car. With this added length, the eyelet cord now reaches from my battery out through the grill of my car, where its 'comfort connect' end is discreetly secured with an undetectable zip tie. This means that I never have to open the hood of the car anytime I want to connect or disconnect the charger. The eyelets remain on the battery at all times and the hood can always remain closed. I can simply connect and disconnect the charger from the outside of the car at this port at the front of the grill. I'm including this info because, when I first started researching, it was not at all clear how the physical set up works. This Ctek charger really is a quality device. Nothing about it feels cheap or flimsy or plastic-y. It's remarkably simple to use, and at under $90, I think it's a total steal for the valuable service it provides. I only wish I had known about it years sooner. In every respect, it's a total no brainer.
UPDATE: 2 years later, it's going strong and is still one of the best purchases I've ever made!

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