NOCO GENIUSPRO50: 50A 6V/12V/24V Professional Smart Battery Charger – Maintainer, Desulfator & Power Supply with Overcharge Protection & Thermal Compensation – for Lead-Acid & Lithium Batteries

The NOCO Genius PRO 50 is a serious piece of equipment. It revived a completely dead battery that had sat in my garage through three Vermont winters — something my smaller 10A charger couldn’t do. It charges fast, has excellent build quality, and works with both 12V and 24V systems.That said, it’s probably more than most casual users need. If you just top off car batteries once in a while, something like the NOCO Genius 10 or 25 might be a better fit. But if you regularly deal with large or deeply discharged batteries, this is worth every penny.Highly recommended for anyone who needs fast, reliable charging and professional-level features.Q: Will the NOCO Genius PRO 50 work on a completely dead battery that other chargers can’t detect?A:Yes, the Genius PRO 50 has a special Force Mode that allows it to manually begin charging even when a battery is deeply discharged and reads zero volts. I personally used it to recover a battery that had been sitting for over three years in freezing Vermont conditions — other chargers couldn’t even detect it, but the PRO 50 brought it back to life. It’s one of the best features if you deal with neglected or “dead” batteries.

This thing is a beast. I've had this thing for a year and a half already and I love it. When I park my truck for my off time and forget to turn off my power inverter, my truck will be completely dead. Hook this up to the batteries and in 10 min. The batteries are full. I've started to use the repair mode once a month because I'm trying to get the most out my batteries and its a great feature. I hate that they took the booster off the newer models but honestly, not needed. I have it mounted to my truck and it comes with more than enough cable to hard wire and mount it just about anywhere. I have a generator mounted as well so even at truck stops while on resets, I'm set. No need to turn on the truck just to charge the batteries. I just plug it in, charge for 30 min and I'm good. Owner ops, you need this.

Absolutely love this charger. I had the 25A charger, decided to get this one and have not been disappointed. Easy to use, not too heavy, and use it almost every day at work for programming, during diag, or just to charge up a car that’s been sitting in the stall for a bit. Very functional. A lot smaller compared to the Exteq that’s also a 50A charger. Charges pretty fast. I’ve been able to repair 2 batteries with the repair option. Definitely recommend.

1. i tried to charge an agm battery and the battery got so hot i couldn't touch it. the charger also used lots of power and was very hot for days. after 5 days the battery went from 900 cca to 200. the battery is now ruined because i tried repairing the battery w/ this device and that was also unsucccessful.2. power cord does not plug in securely and unit keeps shutting off3. poor instructions do not even say how to repair agm vs regular batteries4. lack of features. unit does not show how many amps are going into battery and unit charges slow for a 50amp charger.5. not heavy duty but plastic construction w/ plastic touch buttons.

This has worked great for maintaining steady voltage during flash reprogramming and/or diagnostics in my busy automotive shop. Every function (besides 10 amp limit charge) is controlled by one button, which can be inconvenient, but I've gotten used to it. I had to keep the booklet handy for the first month or so to remember how long to press the button, and with the clamps connected or disconnected, to get into each mode. I got it on sale, I don't think I would have paid full price for it, but it is a quality product.

This thing is awesome. the battery repair feature has worked on two batteries that i thought were junk. after that they charged and held a full charge. it can also be used to power anything 12 volt or 24 volt .it's very heavy duty but compact in size and very powerfull

Great product easy to use.

This charger is obviously a high quality unit, and I expect it to last many years. However, it is expensive and therefore I expected a better "user experience".There are a lot of programs to charge various types of batteries, and recover sulfated batteries, which is fantastic. Accessing all these programs is not intuitive. There is a little "help diagram" on the front panel, but it's also not exactly intuitive to use.The unit really needs a small LCD display to tell you what it's doing, and also to tell you the battery voltage. The fact that a $600 charger doesn't have this is disappointing. When I first turned the charger on to charge my first battery, I was surprised to find out that after 24 hours, it was still charging and hadn't completed the charge. Concerned, I contact tech support, and they said that it is "probably" performing a recovery of a sulfated battery. Eventually after about 4 days, the charge finished. I guess it thought that it should perform a 4-day recovery process. But it doesn't tell you this-- basically this device is just a black box that does whatever it wants without informing the user of much of anything. So you're left guessing at what it's doing. For $600, I expect better.In short, the device obviously has a sophisticated internal program that gives you a lot of functionality. But with no user feedback, you just have to trust that it's doing the right thing, and you have no idea when it might finish whatever it's doing.