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

I bought this NOCO battery charger to replace an ageing battery charger, and I needed a charger that would be suitable for the newer AGM/ Stop start batteries.Initially I had been given advice to purchase a well known competitor to the NOCO, but as I already own, and highly rate the NOCO jump starter/booster pack, I decided that I would stick with the brand.From the moment you open the box, it's clear to see that NOCO take time and effort to design and manufacture their products. The products are so well made, which make it a refreshing change from all of the usual cheaply produced rubbish that you see.The charger is a sturdy bit of kit and feels it. The battery lead come in two pieces - which is a brilliant idea. It makes it so much easier to attach the battery clamps to the battery, without worrying about the charger banging around behind. Especially as is often the case these days, the batteries can often be buried in the car somewhere. Talking of the battery clamps, they are a perfect size, not too big or too small, and the clamping pressure is spot on.The other advantage of the lead being in two is that you could permanently attach the clamp end to your battery terminals (obviously using the ring terminals instead of the clamps) and then leave the lead permanently attached to the car. It's simply a case then of attaching the other end (with the charger attached) to the lead - perfect if you want to regularly top up your battery. The end you leave on the car has a well made cover that simply attaches over the end and keeps it clean and dry, and the connection between the two leads is well constructed.On to the charger. It's so easy to use. Connect it all up to the battery and turn the mains on. The charger instantly goes on to standby, something that most battery chargers don't do, and I for one think it's an excellent safety feature. Simply press the button to select your battery type and leave it to do its job - it's that simple. The led's are nice and bright and show clearly the charging process of the battery.This is an excellent product and there are many reviews online for you to view before taking my word for it.Well done NOCO, another excellent product!

Due to not needing to drive frequently these days my car is idle a lot more, over the past 12 months I’ve had 3 flat battery issues. First time, RAC replaced it, second time they came out again and charged it, explaining the problem, it’s not getting any charge from lack of use. They also advised that I would be charged if I called them out again for this issue.Third time of a non starter on Monday, I looked for a smart battery charger and after reading the positive reviews bought this.It’s fabulous! Instruction manual would be helpful as the QR code on the included leaflet takes you to a broken link. However, it’s not rocket science to figure it out.My battery was completely flat. In under 3 hours the charger had done its thing and was showing on the display screen it was fully charged.No faffing whatsoever, easy to use with a simple interface, compact to store and does the job it’s intended for, quickly.

Bought to charge a Transit (AGM) battery.This device charged my battery to full and then proceeded to ‘condition’ it a day later. Brilliant device.I had to ask for some help from NOCO, which was just my lack of knowledge about flat batteries and big batteries.On first connection it correctly showed one red bar - slowly pulsing. After 5 hours the charger block gets hot and absolutely nothing changes. That seeemd odd as I thought it was a few hours was needed.If a battery is properly flat and possibly sulfated it needs a lot longer. I just had to be patient and let it do its work … eventually it jumped to pulsing greenThen it is worthwhile keeping it plugged in for a day (or so it later) so it can further balance the battery (which is when all the other lights go out and it’s just a green symbol). For big batteries this takes a while. Glad I got this 5A one.And thanks to NOCO customer service for the advice

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.