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

Prime Day sale made the value exceptional. Charger is excellent quality, decent instructions, works perfectly. I was previously charging Sprinter van battery with my motorcycle trickle charger, which was okay, but not ideal. This charger made a big difference in charging time and end result was a higher final voltage. Can plug in and forget as it works great as a maintenance charger. I had to add-on the silicon bumper/protector and extension cable for the battery clips - so final cost is higher if you need those options. Only complaint is proprietary plugs which means I can't use the cables from my existing charger. CTek makes a charger with Mercedes-Benz branding - this is the same charger but without the lithium battery capability and M-B branding, so almost half the price (on sale). 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.

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.

We all use many tools and utilities and appliances and devices in our everyday lives. Many of these things work well, and some frustrate the heck out of us. This little device is a true gem. In my book, it ranks among the absolute best devices in terms of its usefulness and utility and also its quality of construction. It is easy to operate, and the instructions manual is well-organized and very clear.I have used it to recondition (not just charge, but recondition) my various car batteries many, many times. The reconditioning feature really and truly works. It brings batteries back from the dead and makes them work like brand new batteries. It has paid for itself fifty times over for me. I highly, highly recommend it.