Will this restore to previous setting and continue maintenance after a power cut? My current one had to be reset each time

It returns to the settings you had before

Can you use this to jump start a car if the battery is dead with no access to a power outlet

No. The GENIUS5 is a battery charger that recharges a battery only when plugged into an A/C outlet. It is not a jump starter. See NOCO Boost UltraSafe Lithium Jump Starters.

When using this charger do you need to disconnect your car battery?

For the normal charge mode it should be safe to charge with battery connected but if using the repair mode I think it would be safer to disconnect as it puts out more voltage (over 15v) and could damage any sensitive electronics, like the ECU.

Ive charged my battery but instead of a solid green light after i have a pulsing green light lasting 2-3 secs. Is it fully charged?

Yes, it is fully charged but leave the device connected unless you need to use the vehicle. Flashing green means the Noco is reconditioning the battery for longevity and easier future charging. After I charged my (knackered) battery, I had flashing green for at least another 24 hours. Leave it, if you can. It will go solid green eventually.

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NOCO GENIUS5 5A 6/12V Smart Battery Charger, Trickle Charger & Maintainer

Product ID: 169905285

Details

Brand
NOCO
Colour
Black
Item weight
0.72 Kilograms
Output voltage
12 Volts (DC)
Product dimensions
8.7D x 11.7W x

⚡5A high-efficiency charging

🔋Supports 6V & 12V lead-acid & lithium

🌡️Dynamic temperature compensation

€ 193.17

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Description

🔌 Genius-level charging for the modern pro—power up, maintain, and restore with confidence!

COMPACT POWERHOUSE - 34% smaller, 65% more power than previous models—charge smarter, not bulkier.
SMART THERMAL SENSOR - Automatically adjusts charging to prevent overcharge or undercharge in any climate.
REVIVE DEAD BATTERIES - Force Mode charges batteries down to 0V—bring neglected batteries back to life.
SET FORGET MAINTENANCE - Safe for indefinite connection with automatic monitoring—never worry about overcharging again.
ALL IN ONE BATTERY SAVIOR - Charger, maintainer, trickle charger & desulfator combined for ultimate battery care.

The NOCO GENIUS5UK is a compact, 5-amp smart battery charger and maintainer designed for 6V and 12V lead-acid and lithium batteries. Featuring temperature compensation, overcharge protection, and a desulfator function, it safely charges, maintains, and restores a wide range of vehicle batteries—from cars to marine and powersport applications. With Force Mode to revive dead batteries and a 3-year warranty, it’s the ultimate all-in-one solution for professionals who demand reliable, efficient battery care.

Specifications

ASIN	B0828HLDZC
Amperage	5 Amps
Battery Charge Time	1 hours
Best Sellers Rank	361 in Automotive ( See Top 100 in Automotive ) 2 in Motorbike Battery Chargers 5 in Car Battery Charging Units
Box Contents	(2) Black Truss-Head Screws, 3-Year Limited Warranty, Battery Charger Mounting Bracket With Velcro Strap, Battery Charger User Guide, GENIUS5UK 5A 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, lead-acid batteries, lithium-ion batteries
Connector Types	Battery Clamps and Eyelet Terminals
Country of Origin	China
Current Rating	5 Amps
Customer Reviews	4.6 4.6 out of 5 stars (3,527)
EU Spare Part Availability Duration	2 Years
Input Voltage	240 Volts
Item Dimensions D x W x H	8.7D x 11.7W x 20.2H centimetres
Item Type Name	NOCO GENIUS5UK, 5A 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	0.72 Kilograms
Manufacturer	NOCO
Manufacturer Part Number	GENIUS5UK
Model Number	GENIUS5UK
Number of Items	1
Number of Packs	1
Output Voltage	12 Volts (DC)
Specification Met	CE, UKCA, WEEE
UPC	046221190229
Unit Count	1.0 count

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€ 193.17

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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Great price for an authentic product. Fast international shipping too!

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