






NOCO Genius2 6V/12V 2A Smart Battery Trickle Charger Maintainer Desulfator
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The NOCO Genius2 is a 2A smart battery charger, maintainer and desulfator for 6V and 12V lead-acid and lithium-ion batteries. It charges batteries up to 40Ah and maintains batteries of all sizes, covering automotive, marine, deep-cycle and powersport applications. It is part of the NOCO Genius smart charger range.
This listing is the Genius2. The NOCO Genius smart charger range is also available as the Genius1 (1A) and the Genius5 (5A).
Key specifications
- Charge current: 2A
- Voltages: 6V and 12V
- Chemistry: lead-acid and lithium
- Battery types: AGM, CA, EFB, Gel, Lithium, MF, Wet
- Capacity: charges up to 40Ah, maintains all battery sizes
- Dead battery charging: from 1V, force mode down to 0V
- Line voltage: 120V to 240V AC
- IP rating: IP65
- Weight: 0.5kg
GENIUS2 6V/12V 2A smart battery charger
A compact 2A battery charger, maintainer and desulfator for 6V and 12V lead-acid and lithium-ion batteries, including flooded, gel, AGM, maintenance-free and lithium chemistries. Suits automotive, marine, deep-cycle and powersport batteries.
The all-new GENIUS
Improved performance over the previous NOCO G1100.
Multi-voltage, multi-chemistry, multi-battery type
Charges 6V and 12V batteries across multiple chemistries — flooded, gel, maintenance-free and AGM — and multiple battery types including starter, deep-cycle, marine and powersport.
Powerful, efficient and compact
High-frequency switch-mode technology converts AC power into safe DC power efficiently. An onboard microcomputer controls charging precisely to minimise power loss, resulting in a compact form factor despite the 2A output.
Improved start voltage sensor and force mode for dead batteries
The start-voltage sensor detects and charges dead batteries down to 1V. For batteries below 1V, force mode can be enabled manually to charge batteries down to 0V.
Redesigned clamps with improved clamping range and force
Needle-nose clamps suit smaller terminal applications and include detachable integrated eyelets for permanent mounting. They are designed to fit terminals of any shape and size, with improved clamping range, clamping force and higher conductivity.
Explore the full range in NOCO Battery Chargers.
Specification
| Line Voltage | 120V to 240V AC |
|---|---|
| Frequency | 50Hz to 60Hz |
| Operating Temperature | -4° to 104°F(-20° to 40°C) |
| Storage | Temperature -22° to 140°F(-30° to 60°C) |
| Relative Humidity | 0 to 95% Non-Condensing |
| Current | 2 Amps DC |
| Voltages | 6 Volts 12 Volts |
| Chemistry | Lead-Acid and Lithium |
| Types | AGM CA EFB Gel Lithium MF Wet |
| Capacity Range | Up to 40 Amp-Hours |
| Maintenance | All Battery Sizes |
| Consumption | 30 Watts (Max) |
| Efficiency | 87% (120VAC / 230VAC) |
| Safety Short-Circuit | Yes Open-Circuit: Yes Overheating: Yes Overcharge: Yes Spark-Proof: Yes Reverse Polarity: Yes |
| Product Size Height | 2.4in (61mm) Width: 3.7in (94mm) Depth: 1.69in (43mm) |
| Weight | 1.1lb (0.5kg) |
| DC Cable + Clamp Length | 77in (195cm) |
| DC Cable Size | 18 AWG |
| DC Fuse Size | 4 Amp Mini Blade Fuse |
| AC Cable Length | 71.7in (182cm) |
| AC Cable Size | 18 AWG |
| Cables | oil, gas, grease, water, chemical, UV and abrasion resistant |
More specs
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What's Included
- GENIUS2 Battery Charger w/ Interchangeable Connector
- Clamps w/ Integrated Eyelets (M6)
- Mounting Bracket w/ Strap
- (2) Self-Tapping Screws
- User Guide & Warranty Information
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NOCO
About the NOCO GENIUS2
From our tech experts at CEN
The NOCO GENIUS2 is a 2A smart charger, maintainer and desulfator for 6V and 12V lead-acid and lithium batteries. It charges batteries up to 40Ah and maintains all sizes, so it covers motorcycles and small cars as well as long-term maintenance on a larger battery. It replaces the older NOCO G1100.
Who it suits
Anyone with a car, bike or boat that sits for weeks at a time. It has twice the output of the GENIUS1; for bigger batteries that need charging from flat, the GENIUS5 handles up to 120Ah.
Our tech experts advise
It is rated IP65 and comes with a mounting bracket, strap and screws, so it can live permanently on a garage wall. The clamps have integrated M6 eyelets that can be fitted to the battery for quick plug-in charging. Force mode will start charging a battery that has dropped below 1V.
Explore the full NOCO range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all NOCO
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Frequently Asked Questions
Q: Can the NOCO GENIUS2 charge lithium batteries?
A: Yes. It charges 6V and 12V lead-acid and lithium-ion batteries, including wet (flooded), gel, AGM, EFB and maintenance-free types.
Q: What size battery can the GENIUS2 charge?
A: It is designed to charge batteries up to 40Ah, and it can maintain batteries of all sizes.
Q: Can the GENIUS2 charge a completely flat battery?
A: Yes. It detects and charges batteries down to 1 volt, and force mode lets you charge batteries all the way down to zero volts.
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