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  • VIDEO
NOCO GENIUS10UK, 10-Amp Fully-Automatic Smart Charger, 6V and 12V Battery Charger, BatteryMerchant Video
  • NOCO GENIUS5UK, 5A Car Battery Charger, 6V and 12V Portable Smart Charger, Battery Maintainer, Trickle Charger and Desulfator for AGM, Leisure, Lithium, Motorbike, Motorcycle and Caravan Batteries
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NOCO GENIUS5UK, 5A Car Battery Charger, 6V and 12V Portable Smart Charger, Battery Maintainer, Trickle Charger and Desulfator for AGM, Leisure, Lithium, Motorbike, Motorcycle and Caravan Batteries

4.6 4.6 out of 5 stars (3,087)

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Brand NOCO
Colour Black
Product dimensions 8.7D x 11.7W x 20.2H centimetres
Item weight 0.72 Kilograms
Output voltage 12 Volts

About this item

  • Meet the GENIUS5UK - Similar to our G3500UK, just better. It's 34% smaller and delivers over 65% more power. It's the all-in-one charging solution - battery charger, battery maintainer, trickle charger, battery conditioner, plus battery desulfator.
  • Do more with Genius - Designed for 6-volt and 12-volt sealed lead-acid automotive, marine, leisure, deep-cycle and motorbike batteries, including flooded, gel, AGM, EFB, SLA, VRLA, start-stop and maintenance-free, plus lithium-ion (lifepo4) batteries.
  • Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
  • Charge flat batteries - Charges dead batteries as low as 1-volt. Or use the all-new Force Mode that allows you to take control and manually begin charging dead batteries down to zero volts.
  • Condition your battery - An advanced battery repair and conditioner mode uses slow pulse reconditioner technology to detect battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
  • Beyond maintenance - It's not just a trickle charger, it's an advanced battery charger maintainer. A fully-automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge.
  • Compatible with all petrol and diesel vehicles - Charge and maintain cars, motorbikes, motorcycles, scooters, mopeds, lawnmowers, ATVs, quads, tractors, trucks, caravans, campervans, motorhomes, vans, boats, leisure vehicles, and more.
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Top Brand

NOCO

94% positive ratings from 1K+ customers

10K+ recent orders from this brand

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This item: NOCO GENIUS5UK, 5A Car Battery Charger, 6V and 12V Portable Smart Charger, Battery Maintainer, Trickle Charger and Desulfator for AGM, Leisure, Lithium, Motorbike, Motorcycle and Caravan Batteries
£81.99
Get it as soon as Tuesday, Jan 28
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£19.26
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From the manufacturer

GENIUS5UK, Smart Battery Charge, Battery Charger, Charger, Battery, Smart

GENIUS5UK, Smart Battery Charge, Battery Charger, Charger, Battery, Smart

GENIUS5UK

GENIUS5UK, Smart Battery Charge, Battery Charger, Charger, Battery, Smart

GENIUS1UK

GENIUS5UK, Smart Battery Charge, Battery Charger, Charger, Battery, Smart

GENIUS2UK

GENIUS5UK, Smart Battery Charge, Battery Charger, Charger, Battery, Smart

GENIUS10UK

GENIUS2D

GENIUS2D

Customer Reviews
4.6 out of 5 stars
3,087
4.5 out of 5 stars
4,030
4.5 out of 5 stars
1,814
4.6 out of 5 stars
1,366
4.5 out of 5 stars
338
Charging Current
5 Amps 1 Amps 2 Amps 10 Amps 2 Amps
Battery Capacity
120Ah 30Ah 40Ah 230Ah 40Ah
Output Power
75W 15W 30W 150W 28W
12V Repair Mode
12V Supply Mode
6V AGM Mode

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NOCO GENIUS5UK, 5A Car Battery Charger, 6V and 12V Portable Smart Charger, Battery Maintainer, Trickle Charger and Desulfator for AGM, Leisure, Lithium, Motorbike, Motorcycle and Caravan Batteries


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What's in the box?

  • GENIUS5UK 5A Smart Battery Charger and Battery Maintainer
  • Needle-Nose Battery Clamps With Integrated Eyelet Terminals
  • Battery Charger Mounting Bracket With Velcro Strap
  • (2) Black Truss-Head Screws
  • Battery Charger User Guide
  • 3-Year Limited Warranty
  • Product guides and documents

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    NOCO GENIUS5UK, 5A Car Battery Charger, 6V and 12V Portable Smart Charger, Battery Maintainer, Trickle Charger and Desulfator for AGM, Leisure, Lithium, Motorbike, Motorcycle and Caravan Batteries
    NOCO GENIUS5UK, 5A Car Battery Charger, 6V and 12V Portable Smart Charger, Battery Maintainer, Trickle Charger and Desulfator for AGM, Leisure, Lithium, Motorbike, Motorcycle and Caravan Batteries
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    Price£81.99-4%Ìý£26.64
    Was: £27.66
    -27%Ìý£62.08
    RRP: £85.04
    £18.44£30.74
    Delivery
    Get it as soon as Tuesday, Jan 28
    Get it as soon as Tuesday, Jan 28
    Get it as soon as Wednesday, Jan 29
    Get it as soon as Tuesday, Jan 28
    Get it as soon as Tuesday, Jan 28
    Customer Ratings
    Sold by
    output voltage
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    Customer reviews

    4.6 out of 5 stars
    3,087 global ratings

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    Customers say

    Customers are satisfied with the battery charger's build quality, battery charge, and ease of use. They find it reliable and simple to connect. The battery recovery cycle works well and can revive a dead or nearly totally dead battery. Customers appreciate its compact design. However, some customers dislike its functionality and have differing views on its value for money.

    AI-generated from the text of customer reviews

    315 customers mention ‘Build quality’296 positive19 negative

    Customers appreciate the battery charger's build quality. They say it works well for the first couple of years, does exactly what they need, and is not bothered by rain. The charger is easy to store and very useful for keeping classic cars in good condition over the cold winters. It can recharge dead and flat batteries and even recondition them.

    "...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..." Read more

    "...Older vehicles ( No electronics / computers etc ) the fixed 2amp one works well. Can be mounted in the engine bay and is waterproof etc...." Read more

    "...using - charged normally using this and battery is fully charged, functioning and well behaved...." Read more

    "Good little charger. Well made, clear to read. Good quality clips and cables. Plugs are strong plastic material...." Read more

    214 customers mention ‘Battery charge’176 positive38 negative

    Customers find the battery charger reliable and convenient. It charges batteries quickly and goes into standby mode after use. The charger holds a charge well and is compact.

    "...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...." Read more

    "...and works out great value. Leave them charging constantly." Read more

    "...5 months as I wasn’t using - charged normally using this and battery is fully charged, functioning and well behaved...." Read more

    "Good little charger. Well made, clear to read. Good quality clips and cables. Plugs are strong plastic material...." Read more

    185 customers mention ‘Ease of use’165 positive20 negative

    Customers find the battery charger simple to use and connect. They appreciate the different charging modes and that it can repair batteries.

    "...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..." Read more

    "...Connecting up was super simple and a quick press to select 12v AGM and it started. As I suspected it was on les sthan 25%...." Read more

    "Speedy delivery. Very easy to set up and does an excellent job of keeping my battery charged...." Read more

    "...These type batteries are best charged at a slow rate and with fine control of voltage in order to maximise their service life...." Read more

    160 customers mention ‘Battery life’119 positive41 negative

    Customers appreciate the battery charger's ability to recharge and restore batteries. They say it works well, bringing back dead car and van batteries back to life. Some customers also mention it can rejuvenate 8-year-old batteries that had not been used for ten months.

    "...The led's are nice and bright and show clearly the charging process of the battery...." Read more

    "...The charger has a repair and maintenance function and looking online all the specialists recommend topping up the battery regularly and even go as..." Read more

    "...This is a charger and maintainer so it can be left on and connected until you need to drive the vehicle...." Read more

    "First item lit up and failed to work Returned item Replaced with in 24 hours amazing Works perfectly" Read more

    95 customers mention ‘Compactness’90 positive5 negative

    Customers appreciate the compact size of the battery charger. They find it fits under closed bonnets, is small but powerful, and lightweight, making it easy to carry around.

    "...Talking of the battery clamps, they are a perfect size, not too big or too small, and the clamping pressure is spot on...." Read more

    "...Lightweight, easy to lug around...." Read more

    "...showing battery charge, unit sits under van seats when not in use - very compact. Haven’t used to charge main van battery directly." Read more

    "...The charger arrived and it is quite compact but I was dissapointed not to have a bag included to keep it all together...." Read more

    28 customers mention ‘Design’28 positive0 negative

    Customers appreciate the battery charger's design. They find it compact and well-made, with an LED charge progress indicator that is a clever feature.

    "...The charger is well designed and well made the cables all feel top quality and the crocodile clips are large and solid and made from what appears to..." Read more

    "...This is clearly a premium and thoughtfully designed and constructed product with so much attention to detail...." Read more

    "...From the box it is a very nicely presented unit, long cables provided and cable clips which easily clamp onto modern terminal blocks...." Read more

    "Does what it says , nice and compact , it’s a good charger . Would be better with extension lead from battery to charger , so not having to..." Read more

    115 customers mention ‘Value for money’79 positive36 negative

    Customers have different views on the battery charger's value for money. Some find it well-made and a good product for vehicle battery charging. Others say it's not the cheapest but reliable. Some were disappointed that it didn't come with a bag or carry case.

    "...Can be mounted in the engine bay and is waterproof etc. and works out great value. Leave them charging constantly." Read more

    "...Excellent value for money as replacement battery would have cost more. Lightweight, easy to lug around...." Read more

    "...Plugs are strong plastic material. On the expensive side, but very good quality and versatile piece of kit." Read more

    "...Well worth the money." Read more

    41 customers mention ‘Functionality’3 positive38 negative

    Customers are dissatisfied with the battery charger's functionality. They mention it stopped working after a short period of use, such as six months or 15 months. Some customers also report that the warning light came on and did not go off.

    "Only just received the charger. Not used yet, straight out of the box, no user manual included. Why not?..." Read more

    "First item lit up and failed to work Returned item Replaced with in 24 hours amazing Works perfectly" Read more

    "This was an amazing product two years on though its failed I’m assuming the led has blown and so no circuit no output or LED light the fuse is..." Read more

    "Only lasted 15months now the unit refuses to turn on. Gonna have to see if NOCO will replace it." Read more

    Well built reliable unit with absolutely flat battery function.
    5 out of 5 stars
    Well built reliable unit with absolutely flat battery function.
    I store cars and also fit maintenance chargers to clients vehicles.After lots of faulty Ctek ones letting batteries go flat, I started to use NOCO. They have not caused me any problems in the past 3 years.Genius 5 amp is my go-to for newer vehicles. Older vehicles ( No electronics / computers etc ) the fixed 2amp one works well. Can be mounted in the engine bay and is waterproof etc. and works out great value.Leave them charging constantly.
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    Top reviews from United Kingdom

    • Reviewed in the United Kingdom on 30 December 2024
      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!
      2 people found this helpful
      Report
    • Reviewed in the United Kingdom on 17 January 2025
      I store cars and also fit maintenance chargers to clients vehicles.
      After lots of faulty Ctek ones letting batteries go flat, I started to use NOCO. They have not caused me any problems in the past 3 years.

      Genius 5 amp is my go-to for newer vehicles. Older vehicles ( No electronics / computers etc ) the fixed 2amp one works well. Can be mounted in the engine bay and is waterproof etc. and works out great value.

      Leave them charging constantly.
      Customer image
      5.0 out of 5 stars Well built reliable unit with absolutely flat battery function.
      Reviewed in the United Kingdom on 17 January 2025
      I store cars and also fit maintenance chargers to clients vehicles.
      After lots of faulty Ctek ones letting batteries go flat, I started to use NOCO. They have not caused me any problems in the past 3 years.

      Genius 5 amp is my go-to for newer vehicles. Older vehicles ( No electronics / computers etc ) the fixed 2amp one works well. Can be mounted in the engine bay and is waterproof etc. and works out great value.

      Leave them charging constantly.
      Images in this review
      Customer image
      Customer image
      One person found this helpful
      Report
    • Reviewed in the United Kingdom on 22 July 2024
      Parked my car for an about 5 months as I wasn’t using - charged normally using this and battery is fully charged, functioning and well behaved. Excellent value for money as replacement battery would have cost more. Lightweight, easy to lug around. Generally straightforward to use in my view although the instructions weren’t very clear (you might not need anyway if you’re a cowboy). 10,000 stars.
      4 people found this helpful
      Report
    • Reviewed in the United Kingdom on 1 November 2024
      Good little charger. Well made, clear to read. Good quality clips and cables. Plugs are strong plastic material.
      On the expensive side, but very good quality and versatile piece of kit.
    • Reviewed in the United Kingdom on 2 November 2024
      Bought this to charge the leisure battery in our van whilst not in use. It’s definitely made it last longer when using it after leaving the battery trickle charging with this whilst sitting in drive. Clear display showing battery charge, unit sits under van seats when not in use - very compact.

      Haven’t used to charge main van battery directly.
    • Reviewed in the United Kingdom on 8 May 2020
      Id been interested in getting a battery charger for a while but in the past they always been bulky things and required removal of the battery which was not only too much faff but would cause my Mercedes a lot of problems in terms of settings and codes. This was all prompted by my car ebing laid up in lockdown and struggling to start some mornings.

      After seeing a noco in use at the Mercedes Specialist I sue I did some research and took the plunge with a genius 5.

      Seemed to be well reviewed and has a number of great features,. My merc uses a 12v AGM battery and a quick check under the bonnet showed easy access positive and negative poles.

      The charger arrived and it is quite compact but I was dissapointed not to have a bag included to keep it all together.

      Chucked my car int he garage and at this point for reference I have a 2017 B200d with original battery thats been driven on the motorway everyday for the last few months allbeit stood for say 4 weeks due to lockdown.

      Connecting up was super simple and a quick press to select 12v AGM and it started. As I suspected it was on les sthan 25%. I left it go for several hours and came back to find it on green and charged. Started well the first time.

      The charger has a repair and maintenance function and looking online all the specialists recommend topping up the battery regularly and even go as far as to say that with Mercs (that have two batteries such as mine) they should come with the hook up preinstalled or you should install hook up cables ready and it should be as routine as parking up your car,

      I think had I left mine that a wouldn't have run it have as much as needed to get anywhere near 100% and no doubt would have given out at an inopportune moment.

      An AGM battery is like to hundred notes and just this one use has probably saved me that in so much as regular top ups now will keep the battery going strong for hopefully years to come.
      29 people found this helpful
      Report
    • Reviewed in the United Kingdom on 30 August 2024
      Speedy delivery. Very easy to set up and does an excellent job of keeping my battery charged. I am disabled and do not use my car as often as I would like.this gadget keeps my battery charged.it does not have long leads that have to be plugged into the mains so it makes life easier for me.
      One person found this helpful
      Report
    • Reviewed in the United Kingdom on 6 December 2024
      Excellent product to keep batteries in top condition.