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

brought my dead AGR battery back to life! superstar charger, my car had a 10v battery it was over £200 for a new one, so i thought i would try this first, absolutely great, took around 8 hours to bring it from 10v back to a healthy 12.7v, its quite a meaty lump of a thing, it comes with all the connections you could need, and it is small but very dense, nice and easy to use, just select battery type and go! well worth, even though it is a bit expensive i think in this case you get what you pay for

Impressed, every bit of this charger built to professional quality. It brought my old van battery back to life and now starts perfectly every time. Use it as a maintainer on my car in storage, keeps it at full charge. Glad I paid a bit more for something that does the job properly. Given that, have to say how baffled that, with all the quality and fancy boxing, it did not come with instructions nor any available on their website. Eventually did find one to download on a 3rd party site, and perhaps just me but found I needed these, as realised I would have been using it incorrectly otherwise.

I bought the NOCO GENIUS10 10A Smart Battery Charger for my Volkswagen T6.1 camper van, after being told both my batteries were finished and needed replacing. I decided to give this charger a try before spending hundreds on new ones — and I’m so glad I did! Within a couple of days, it completely reconditioned and revived both batteries, bringing them back to full health. They now hold charge perfectly and start the van effortlessly every time. This unit genuinely paid for itself the moment it restored those batteries. The reconditioning mode is fantastic, and the built-in temperature compensation ensures safe and efficient charging regardless of the weather. It automatically adjusts the charging profile, which is ideal for a camper van parked outside in varying conditions. The GENIUS10 feels well-built and very user-friendly. The indicator lights clearly show the charging stage, and setup is as simple as connecting the clamps and pressing a button. It works with both lead-acid and lithium batteries, giving great flexibility if you ever upgrade or use leisure batteries. I also appreciate that it’s a true set‑and‑forget smart charger — no risk of overcharging or damage, which makes long-term maintenance effortless. After seeing what it’s capable of, I’d recommend the NOCO GENIUS10 to anyone with a car, van, or camper that’s prone to battery drain. It’s one of those rare tools that actually delivers beyond expectations and saves serious money. A must‑have for any vehicle owner!

I recently purchased the NOCO GENIUS10 and I’m very impressed with its performance. It’s compact, easy to use, and feels very well built. I’ve used it on both car and motorcycle batteries, and it handles them with no problem. The smart charging feature takes the guesswork out – it automatically detects what the battery needs, whether charging, maintaining, or even reviving a low/weak battery. The desulfation and repair mode are nice extras, and the temperature compensation gives peace of mind for year-round use. I also like that it works with both lead-acid and lithium batteries, making it very versatile. It charges efficiently without overheating, and the overcharge protection means I can safely leave it connected for maintenance. The cables and clamps are sturdy, and the overall design is much more modern compared to older bulky chargers I’ve used. Overall, it’s a reliable, smart, and powerful charger/maintainer. Great value for money and definitely a worthwhile investment if you want to keep your batteries healthy.

Bought to support the leisure batteries on my boat and others, mostly wet lead acid types. Works very well. Recovery mode will attempt to recover anything. But my junk batteries were beyond it's magic. The power supply mode will probably come in handy at some point. The charge cables attach to the crok clamps with eyelets and screws. So you can attack directly to a battery. And the inline connector is easy to use.

Really simple to use with multiple options for charging different battery types. Good size, really good weight and quaility to it which helps justify the price. Charges batteries well, useful tool for any garage.

I’ve found this charger to be one of the best I’ve used. When I connected it to my 90Am AGM battery, it charged it in about 80 minutes. If you’re looking to keep your AGM battery running longer, I’d suggest giving it a try.

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