NOCO GENIUS10, 10A Automatic Smart Charger, 6V and 12V Portable Automotive Car Battery Charger, Battery Maintainer, Float Charger, Trickle Charger and Battery Desulfator with Temperature Compensation

Brilliant bit of kit. Essential for my ancient Range Rover.

This is not a UK version, something that really should be made clear. Still, it was simple (if tedious) enough to fit a UK plug. No earth wire - not sure if that's an issue, but I'm not an electrician. Works just the same as the Genius 5 I already have, charges fairly fast and well, and with no fuss. It tops my fairly big battery up in a few hours. It works, and reliably. My car starts strongly every time, even after a long period of lying then given a top up charge. Enough said. Excellent charger, quicker than the Genius 5 (which still did the job, only slower) but annoying that I had to read the small print to realise I'd been mis-sold a US version.

Got this on a deal. Usually quite a bit more expensive. Have several batteries that need maintaining and this does the trick. Did a fair bit of reading up on the Noco and the CTEK optimisers. Bang for buck, multiple battery types (gel,lead,etc) and waterproof put this ahead. NB. Noco do 1A, 2A and 5A optimisers as well. Depends on your needs.

I liked it very much. The only thing I need to buy extra is an EU/US plug to the UK from the local store.

It was not clear at first that there are 2 models, one for the American market - 2 pins and one for the UK - 3 pins. A real pain to get it exchanged to the correct version. Process is ongoing since product is from America. The exchange was easier than expected with th help of DHL. The battery charger is probably the best one I have ever bought, extremely well made and works very well; functions are easy to select. Provided with range of accessories.

Very pleased with look and finish of Product. If the assories and adaper plug were included to make a superb one stop package, willingness to pay a little extra woud appeal. Overall a Quality product.

… easy to use and good value…

I am an amateur of knowledge about batteries. And this device meets all my requirements.

Muito bom!

Even I got issue with the item, they sent a new one to. Thanks!

EDIT 2/26/24: I am now the blocks "AAA". Been helping people start their cars when jump starts with cables have not worked. Definitely handy to get other people out of an otherwise expensive pinch. I have a car battery that I purchased around 2016 (date of review 1/3/24). The car itself does not get driven much, at most 2-3 times a week no longer than 15 minutes one way. Throughout the years I've drained it by leaving the car lights on. Its always required a jump start after that to get going again. Recently I've been an idiot and been leaving my lights on more frequently. Eventually it required me to jump start everytime I wanted to turn on the car. It was becoming a hassle and I was about to call it quits and purchase a new battery until I came across Project Farm's review on battery chargers. This was at the top of the list so I figured to give it a shot. I was not disappointed! I charged it for 4 days straight, put it in my car, and it started right up. Not surprised considering it was just charged but the real test laid ahead. I was going to be out of town for two weeks and leave the car sitting. I came back two weeks later and the car started up, no hesitation whatsoever, as if it was a different battery! The NOCO Genius 10 saved me about $150-200 at least in a brand new battery. On top of that, I can now use it for other batteries in the event of any similar issues. The instructions on the other hand are a bit confusing and had to rely on YouTube comments to piece it together. For those who are confused at what to do, I did not do a 12V repair (function which this unit has) as it requires the battery to be completely charged first. All I did was charge it straight for 4 days uninterrupted. When first put on battery to the charger it will be in standby mode. You push (or hold depending on what you need) the MODE button to select your desired option. I was charging a lead acid battery so I selected 12V. The meter at the top slowly advanceD from each of the four bars until the final bar was pulsing green which indicates its charging to full (over 80% I believe). The green charging light continued to slowly pulse even on the 4th day but I took a gamble and disconnected it from the battery. For the battery to be 100% charged, the green light should stay solid. That means my battery worked 2 weeks later after sitting and it wasn't even at 100%. The unit can also force a charge on batteries that are extremely under voltage. Thats a separate setting that I haven't had to use yet. It can also charge AGM and Lithium but I believe the 12V repair function is only for lead acid. Unfortunately I had to go through 3 separate orders because the first two were from Amazon Warehouse and I encountered issues with both, consecutively. I ended up getting frustrated and just purchased a brand new charger. Pros: Solid build quality Excellent cable connections with weather covers Compatible with a wide variety of batteries Repair and Force charge batteries Cons: Poor instructions Charge is slow BUT I think thats how these chargers work TL;DR Try this first before rushing to get a new battery it is a good investment that can save you a lot of money

42 years as a mechanic and I have to say I’ve used all kinds of chargers in my life, and the Noco genius is absolutely the top tier of all. set it and forget it. The smart feature of the charger does it all for you. Today’s batteries are quite sensitive to voltage whether it’s a lead acid or an AGM battery too high voltage or too low of voltage output from a charger you don’t realize it, but it will damage the batteries as it charges. AGM‘s are especially sensitive to this. When charging the Noco automatically adjust voltage output and the amperage output as the battery begins to top off preventing damage and allowing the battery to top off fully at its maximum capacity, which is very important on lead acid batteries. This is where cheap to mid range battery chargers don’t work properly. They often continue to flow even when the battery is topped off at quite a high voltage damaging the battery. This charger also incorporates a desolfation mode that can bring most discharge batteries back to life it also incorporates a forced charged mode that will allow it to charge a battery that is down to one volt which most other brands of chargers will not do smart charger or not. These chargers are very well-made. The plastic is not cheap and is very strong. It has good weight to it. The power cable leads our 16 gauge so they are quite thick. The clamps are copper that is plastic covered, but are extremely solid and durable I’ve been using them for years and have never had an issue. The ambient temperature sensors on these chargers are also another strong point as they actually work properly, allowing a battery that’s in a vehicle in cold weather conditions to top off faster and better and then it will keep it there ensuring a strong start to next morning. For those that want the very best charger that will outperform anything else in its category look no further this is the one along with the three-year warranty that backs it up if something should go wrong. I highly recommend this product. You will not be disappointed so spend the extra money and get the best. You’ll have it for 20 + years

I wasn’t expecting to become that person who gets excited about a battery charger, but here we are. I bought the NOCO GENIUS10 after my car battery kept dying during cold mornings, and it’s been a total game-changer. Setup was super easy — plug it in, connect the clamps, and the charger does the rest. I love that it’s fully automatic and smart enough to figure out whether I’m charging a 6V or 12V battery without me fiddling with settings. The safety features are reassuring too — no sparks, reverse polarity protection, and it even compensates for temperature, which is perfect given how hot it gets where I live. What really impressed me is the battery desulfation mode. I had an old battery that was barely holding charge, and this charger managed to revive it enough to get me through a few more months. If you want something reliable and worry-free to keep your car battery healthy, this NOCO Genius charger is worth every penny.