Hi , what is the charge capacity for this charger ? Will it charge a 100 AH battery ?

The GENIUS1 can charge a 100 amp-hour battery, but it will be an extended charge time if the battery is completely dead. For example, the GENIUS1 would take roughly 76-hours to recharge a dead battery. For comparison, the GENIUS2 would be 37-hours, the GENIUS5 would be 15-hours and the GENIUS10 would be 7-hours.

Will it auto resume maintaining the battery after a power cut ?

It should do as I understand anytime it is used it should start up from the last setting each time, so when I go to set up the charger next time it will automatically go to the 12V set up I used the first time.

Does anyone know if i have to disconnect the car battery leads first to use this charger? or can i literally pop the hood and connect it up?

You do not have to disconnect the battery from the car.

Which model can you suggest for an audi tt, 3.2 l. the car is rarely used, but i want to keep the battery topped up

The basic model I have found to be totally satisfactory….I use it on my Mazda 2…it was recommended by the AA guy who came to start my car. Much better than my old charger.

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NOCO GENIUS1: 1A 6V/12V Smart Battery Charger – Automatic Maintainer, Trickle Charger & Desulfator with Overcharge Protection & Temperature Compensation – For Lead-Acid & Lithium Batteries

NOCO GENIUS1: 1A 6V/12V Smart Battery Charger – Automatic Maintainer, Trickle Charger & Desulfator with Overcharge Protection & Temperature Compensation – For Lead-Acid & Lithium Batteries

Product ID: 169905284

Details

Brand
NOCO
Colour
Black
Item weight
0.43 Kilograms
Output voltage
12 Volts (DC)
Product dimensions
10.2D x 8.7W x

⚡1A smart charging power

🔋6V/12V multi-chemistry support

🌡️Auto temperature compensation

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Description

🔌 Charge smarter, live powered — never miss a beat!

REVIVE RESTORE - Advanced desulfation pulses reverse battery sulfation, extending battery life and performance.
COMPACT POWERHOUSE - 35% smaller yet delivers 35% more charging power for ultimate portability and efficiency.
SMART THERMAL CONTROL - Integrated sensor adjusts charging to ambient temperature, preventing overcharge and optimizing battery health.
UNIVERSAL COMPATIBILITY - Supports all lead-acid and lithium batteries across cars, bikes, boats, and more—one charger to rule them all.
SAFE ALL DAY MAINTENANCE - Leave it connected indefinitely with overcharge protection and trickle charging for worry-free battery care.

The NOCO GENIUS1UK is a compact, 1-amp smart battery charger and maintainer designed for 6V and 12V lead-acid and lithium batteries. Featuring automatic temperature compensation, overcharge protection, and desulfation technology, it safely charges and restores batteries from cars to marine vehicles. Its universal compatibility and safe all-day maintenance make it an essential tool for professionals who demand reliable power on the go.

Specifications

ASIN	B0828HMG3N
Amperage	1 Amps
Battery Charge Time	1 Hours
Best Sellers Rank	243 in Automotive ( See Top 100 in Automotive ) 1 in Motorbike Battery Chargers 3 in Car Battery Charging Units
Box Contents	3-Year Limited Warranty, Battery Charger User Guide, GENIUS1UK 1A Smart Battery Charger and Battery Maintainer, Needle-Nose Battery Clamps With Integrated Eyelet Terminals
Brand Name	NOCO
Colour	Black
Compatible Devices	Cars, motorbikes, motorcycles, scooters, mopeds, lawnmowers, ATVs, quads, tractors, trucks, caravans, campervans, motorhomes, vans, boats, and other vehicles and equipment from compatible brands.
Connector Types	Battery Clamps and Eyelet Terminals
Country of Origin	China
Current Rating	1 Amps
Customer Reviews	4.4 4.4 out of 5 stars (4,417)
EU Spare Part Availability Duration	2 Years
Input Voltage	240 Volts
Item Dimensions D x W x H	10.2D x 8.7W x 17.1H centimetres
Item Type Name	NOCO GENIUS1UK, 1A Smart Car Charger, 6V and 12V Portable Heavy-Duty Battery Charger Maintainer, Trickle Charger and Desulfator Conditioner for AGM, Leisure, Lithium, Motorbike and Caravan Batteries
Item Weight	0.43 Kilograms
Manufacturer	NOCO
Manufacturer Part Number	GENIUS1UK
Model Number	GENIUS1UK
Number of Items	1
Output Voltage	12 Volts (DC)
Specification Met	CE, UKCA, WEEE
Unit Count	1.0 count

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₨2051

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Seychelles.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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