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

This battery charger/maintainer works excellently with almost no effort to recharge a weak battery or maintain a battery in cars that aren't driven regularly. This is especially important in colder weather as the charge can drop enough to be unable to start the vehicle. This almost happened to my 2011 BMW 535i Xdrive 95Ah battery after not moving it for 2 weeks mid winter. I got several low charge warnings but thought they would go away once I drove a bit, but trips were far and few between. The charger power cord is hard wired, and the output leads have a fast clip connector at the far end to plug in either the alligator clip ends or 1/4" eyelets for a more permanent connection to make frequent charging easier. Both the power cord and the output leads are 6' long for a total of 12' plus another 18 inches for either the alligator clip or eyelet connectors, so there's plenty of length to position the charger where you want. The clips are spark free and have polarity protection so you don't have to worry about those when making your connection. Plugging the device in starts it in standard vehicle battery mode. Other modes include motorcycle for smaller vehicles, AGM for those batteries, and a reconditioning mode to restore full capacity to batteries that have lost some charge capability. From almost dead, it took about 28 hours to go through all 7 phases of charge. Patience is the way to go here, don't check often, especially if you have to open a door or hood to do so. I found it best to leave it under the hood with it slightly ajar and check every 4 hours or so. Resist the urge to unplug it because you think it's not progressing. It is. Even in cold weather it will get your battery back in great condition with little more than the press of one button. Highly recommended.

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.

Jay Leno talked about this unit on his show and praised it highly, he's a real car guy plus I highly doubt Jay's endorsement could be bought. I plugged mine onto what had been a healthy 12V car battery that tested at only 11.6 volts when resting. Overnight, the charger went through all 8 steps of charge/test and had a green light. Now the battery tests at 12.6v Maybe any other charger would have restored it that well but this thing puts the battery through a lot of steps to improve and insure it's 'health'. Highly recommend. High quality, fast charge, great power, easy to attach, LONG cord, easy to use basically plug'n'play. The instruction manual however, not so great. I viewed some youtubes to make sure I understood the various functions, there are plenty of them, turns out this is a very popular charger for real car guys.

I have two of these chargers. One that I have been using for 4 years and the other for 1 year. They work great and are in almost constant use for keeping a tractor, a mower and a motorcycle charged and the batteries maintained. They are not cheap but I believe that they are worth the price given how well they work, how long they last, and how they extend battery life.

This is a fantastic battery charger that has worked perfectly for me and my C6 Corvette for the past 6 months. In particular, for any Corvette owners reading this, like me, you are concerned about your ride's battery draining. That pesky parasitic drain is something we just have to deal with on these cars, and this charger takes care of that and more! Not only does it maintain your battery's charge and prevent the drain, but it also optimizes the battery and reconditions it, helping to improve lifespan and performance. This CTEK model in particular is pretty much the exact one used by Chevy as the OEM Corvette battery charger (just branded as Corvette and costs almost double). Overall it is very easy to use & easy to read and know where it's at in the charging process with corresponding lights. There's a section in the included user manual which tells you what is occurring at each step in the process. My only slightly negative observation is a very slight "buzzing" noise coming from the charger when plugged in, but otherwise, it has worked flawlessly for me and has helped keep my battery charged up and ready for action!

Purchased this in 2018, and has worked well except for a flakey mode button the last couple years, that required very hard repeated pushes to activate. Saw YouTubes on how to clean/replace switch, but they required cracking into unit, compromising water resistance. I fixed mine by cutting through and around the mode button plastic label, lifting out the 1/2inch circle, then popping off the black button underneath. I then squirted some plastic-safe contact cleaner on the surface mount microswitch and repeatedly pushed to work it in. The switch then returned to normal functioning and selected modes easily. Applied clear vinyl tape over reinstalled black button and hole, extending over black label and trimming with razor to edge of label. You could try to save the mode button cutout and install under tape, but I just used a white Dyno label for the now working black mode button. Except for this one switch flaw, it has worked great to charge and rejuvenate car, mower and booster batteries.

Used it to bring a 6 month old Odyssey AGM battery back to life. It took about two and a half days as it reconditioned it.... but now it starts the car without problems. 2 weeks later and still working. It was easy to use and it fit under the hood as it did it's job. Saved me from having to take it out and drive it to the parts shop 45 minutes away. Definitely worth it.

Bar none, the BEST battery tender/charger on the market. It charges AGM batteries (BMW in this usage) perfectly. Plug and play and walk away. The charger will give you status lights for every step it's on so you're not guessing what it's doing. It comes with its own carrying bag so you can take it with you, or mount it on a wall in a garage. Its alligator clips are strong and don't lose grip on the terminals. On my E92 it comfortably reached the positive and negative terminals and the charging unit fits nicely either on the windshield with the hood down, or just lay it somewhere in the bay. This will automatically detect what battery type you're charging and is versatile enough to go from different cars to top them off. This replaces any cheap tender I had and the quality more than paid for itself.

Produto de otima qualidade

conforme fiable au top très bon revendeur je suis satisfait

I purchased this CTEK charger for my 2014 BMW 535 xDrive to help manage battery health during cold winters and periods when the car sits unused for extended time. Modern vehicles with advanced electronics tend to drain the battery over time, and this charger has been a great solution for keeping everything properly maintained. It keeps the battery fully charged and optimized without overcharging, which gives peace of mind—especially for higher-end vehicles that rely on stable voltage for all their systems to function correctly. The unit is very easy to use and includes multiple charging modes suitable for different vehicle types, including motorcycles and performance cars. The automatic cycling feature is especially useful since you can just connect it and let it manage the charging process safely. Overall, this is a very reliable and practical charger to have. It’s well-suited for anyone looking to preserve battery life and avoid unexpected dead batteries, especially in harsh weather conditions. I would definitely recommend it.

Excelente compra con la pandemia tengo 2 autos que casi no se usan y continuamente los tenía que mandar a mi mecánico para cargar las baterías , desde que lo compre ya se pago solo. Carga precisa y muy fácil de usar

Perfect. Not the first one I have owned, CTEK chargers are very good.