NOCO GENIUS5: 5A 6V/12V Smart Battery Charger – Automatic Maintainer, Trickle Charger & Desulfator with Overcharge Protection & Temperature Compensation – For Lead-Acid & Lithium Batteries

Bought the NOCO GENIUS5 to keep my car battery from dying during the weeks it sits unused. Setting it up was straightforward, just hooked up the clamps, plugged it in, and let it do its thing. It figures out the voltage on its own which is nice if you aren't sure what you're working with.The unit feels really solid and compact compared to older chargers I've used. It doesn't take up much space in the garage. I like that I can just leave it connected without worrying about overcharging since it switches to maintenance mode automatically.Only downside is the cables could be a bit longer. Had to use an extension cord to reach the outlet from where my car is parked. Also, the display is kind of small, so reading the status from across the garage isn't happening.Works as advertised though. Battery starts up strong even after sitting for a while. Glad I finally picked one of these up.

⭐⭐⭐⭐⭐Excellent product and very helpful!I had a dead battery on my new motorbike, and unfortunately, my breakdown cover doesn’t provide assistance at my home address. I thought I’d give this a try, and I’m really glad I did.It works perfectly and is not complicated at all — very easy to use. The battery was fully charged within a few hours, and I was ready to get back on the road.It also saved me the hassle and expense of calling a recovery service to take the bike to my local garage, which would have cost around £120.Thank you so much for such a useful product and for saving me both time and money. Highly recommended! 👍

Superb little charger I use it for Campervan leisure battery's and it does the job had it for over a year and it's working as it should well worth that little bit extra for a great item.

I decided to buy this after a lot of research comparing with other makes.The main reasons I went for this is mainly good reviews.This particular model fitted my requirements as it was more than enough to maintain the size of the battery I have. There are other Noco chargers of different specs ideal for the batteries of different specs so it is important to go for the one which covers your battery spec.The charger definitely feels good quality. The battery I wanted to revive was about ten years old which I normally charged once a month using my other normal charger as the car is stored and has not been used for years.Recently I noticed the battery would not charge.I discovered one cell was faulty.I thought of buying a new battery but before that I decided to buy this Noco charger which I will need to maintain the new battery and maybe revive the old one as it has the feature to do this.The truth is it did not revive the battery as I believe not every can be saved especially when too old.So mine could not be saved which I am not worried about.In the end I knew I have to get new battery. Hopefully this charger will maintain the new battery and the battery will last for years. I do recommend this great quality charger with a great features.My only reason of giving one star less is I found the charger gets quite warm or shall I say almost hot during long continuous use.I left it on over night charging this faulty battery which I mentioned above.Next day the charger was pretty much hot to touch. I think maybe this is due to the faulty battery which was not charging to full capacity so the charger was trying continuously to charge which resulted in the charger becoming hotter than normal. Normally the charger cuts out periodically to maintain a good battery so I guess it should operate much more cooler.I would advise it to leave it on something safe during long use.I did try to find out from officially Noco reps about the charger getting hot to which they replied yes it will be warm to touch during long use.

The NOCO Genius5 is a significant step up from the previous G3500 model. It is smaller, smarter, and incredibly powerful for its size. I’ve used it on both my daily driver and a motorcycle battery that had been sitting idle, and the results have been flawless.1. Smart Charging and Versatility: What makes the Genius5 stand out is its ability to handle 6V and 12V batteries, including Lead-Acid, AGM, and Lithium-ion (LiFePO4). The "Force Mode" is a standout feature; it allows you to manually start charging batteries that have dropped to 0V, which most smart chargers would simply reject as "dead."2. Battery Repair and Desulfation: I tested the Repair Mode on an older AGM battery that was struggling to hold a charge. The integrated thermal sensor is a great addition, as it adjusts the charging profile based on the ambient temperature to prevent overcharging in summer or undercharging in winter. After a full cycle, the battery's health significantly improved, saving me from a costly replacement.3. Safety and Ease of Use: The "plug-and-play" nature of this device is excellent. Once connected, it monitors the battery 24/7 without any risk of overcharging. The clamps (X-Connect) are high-quality, with a needle-nose design that makes them easy to attach to smaller motorcycle terminals or cluttered car battery bays.Pros:Extremely compact and lightweight compared to traditional chargers.Supports a wide range of battery types, including Lithium."Force Mode" can revive batteries from 0 volts.Intelligent temperature compensation for all-season charging.Cons:The interface is simple, but you must read the manual to understand the different light patterns for the Repair mode.The cables are of good quality, but they can be a bit stiff in very cold temperatures.Final Verdict: Whether you need to maintain a seasonal vehicle or try to rescue a discharged battery, the NOCO Genius5 is a professional-grade tool that is remarkably easy to use. It’s an essential piece of kit for any garage.

Seems to work very well with no problems at all. Nice and small and easy to use.

I bought this to replace my halfords charger that broke, primarily to keep my motorbike battery topped up. Its very well built like all my NOCO products I have, it's smaller than expected but that's a positive. Easy to connect and set up, good value especially if you can get it on offer like I did. Would definitely recommend for both motorbike and car.

Excellent, charged to leisure battery in the camper in a few hours and maintained it for the duration of the stay.