NOCO GENIUS10: 10A 6V/12V Smart Battery Charger – Automatic Maintainer, Trickle Charger & Desulfator with Overcharge Protection & Temperature Compensation – For Lead-Acid & Lithium Batteries

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 qualityExcellent cable connections with weather coversCompatible with a wide variety of batteriesRepair and Force charge batteriesCons:Poor instructionsCharge is slow BUT I think thats how these chargers workTL;DRTry this first before rushing to get a new battery it is a good investment that can save you a lot of money

This product is far more than a simple battery charger—it's a complete battery care system. Its advanced features, intelligent design, and ability to handle even the most challenging battery conditions make it an outstanding investment for anyone who owns multiple vehicles or wants to extend the life of their batteries.It's user-friendly, and the charger operates efficiently and safely. It provides peace of mind knowing that your batteries are being maintained properly, whether in daily use or long-term storage.✅ Pros:Advanced battery maintenance technologySmart and intuitive operationReliable performance in difficult battery situationsIdeal for multi-vehicle households or long-term battery care⚠️ Cons:None significant observed so far🔚 Final Verdict: If you're looking for a powerful, intelligent, and dependable battery charger, this is the one to get. Highly recommended for both casual users and automotive enthusiasts.

The NOCO GENIUS10 is more than just a battery charger; it's a comprehensive battery care system. Its advanced features, ease of use, and ability to tackle even the trickiest battery situations make it an invaluable investment for anyone with multiple vehicles or who wants to maximize their battery's life. If you're looking for a reliable, smart, and powerful charger, look no further. This is the one!

* Build quality feels very rugged and durable* Clamps are removable, exposing eyelet terminals on the cables, allowing me to hook it to my solar system perfectly.* Terminals have a plastic cover with different colors for each pole, a truly foolproof design.* Works great and gets my battery charged without risks.* Memory feature allows me to just plug it in, and feel safe knowing the NOCO will handle the charge with the proper profile when the grid power is backMy PV array is very small, so after a large outage, I plug it in and it gets my battery charged without concerns once the grid is back.

My 2022 Chrysler Pacifica battery was dead when we returned from vacation. We tried jumping it to get it started, but that didn't work as the battery was completely dead. This NOCO charger worked well and completely charged the battery. It took about 24 hours. That was worth 5 stars.A couple of days later I tried to charge another car that had been sitting for the same amount of time. Its battery was still good, but I wanted to fully charge it. Unfortunately, the NOCO charger kept giving an error that it was overheated and would not work. I cleared the error but it still would not work. In all fairness, the outside temperature was about 95 degrees, which likely contributed to the problem. This review should be 4 1/2 stars.

This is a pretty well reviewed brand and I actually bought it based on the overall reviews. Some sites have it listed as number one for this type of charger. I bought it for my quad that I don't ride very much. It has a feature called 'repair' that actually saved me from having to buy another battery. The battery couldnt hold a regular charge, so I put it on 'repair' and it actually 'fixed' the battery. It was able to be charged after that. It's a solid item and a meaningful upgrade from the other lesser priced offerings.