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.

This charger is awesome. One of our cars (a hybrid) went completely dead from lack of use for several weeks in the very cold winter we're having this year. Tried a bunch of times but couldn't jump start it. A friend recommended this product to me to trickle charge the battery. The product is easy to use, the instructions are pretty clear. It did the trick. Took about 18 hours but the completely dead battery was fully charged and the car was completely operational the next day. Real life saver because if you can't jump your car, towing and repair shop bills are next. I love it. And the alligator clamps were set apart with enough reach to get to the two hybrid terminals that weren't as close together as they would be on an actual battery. I also appreciated that the wire from the clamps to the box was long enough for me to rest the charger on my garage floor instead of on top of something under the hood for such a long period. I highly recommend.

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.

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.

Just a great product! Works well

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.

I bought this CTEK 40-206 MXS 5.0 to use on my 2022 Maserati Levante and it has been the best battery tender for this type of performance SUV. My battery life is ready to go, charging speed is optimal for setting it overnight. Connectivity is easy offering use of squeeze clamps, or direct bolt-on harness. The Maserati Levante doesn't offer any true cord friendly options, other than to wrap the wire in a microfiber towel when closing the hatch, to buffer the "crunch". The unit is easy to operate, it's plug-n-play ready, doing everything it needs to maintain the battery. The unit is so compact and portable, I can store it in the accessory tray under the Levante's storage space. I was also told by fellow enthusiasts that the genuine Maserati tender, while costing hundreds more, is a CTEK tender underneath the sticker, and after using this unit, it's proof positive that it is fully capable of tending a Maserati battery with no adverse affect to the systems or harness. This is a must buy if you have a world class brand high performance SUV or car.

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.