NOCO Genius2D 12V 2A Direct Mount Battery Trickle Charger Maintainer
Couldn't Load Pickup availability
The NOCO GENIUS2D is a 12V 2A direct-mount smart battery charger and maintainer from the NOCO Genius range. It is designed to be permanently fixed near the battery in engine bays, boats and equipment, and suits 12V lead-acid batteries up to 40 Ah.
This listing is the GENIUS2D direct-mount model. The NOCO Genius 2A charger is also available as the portable NOCO Genius2 6V/12V 2A Smart Battery Charger.
This is a 12V-only charger and does not charge 6V batteries.
Key specifications
- Voltage: 12V
- Charging current: 2 A
- Battery types: lead-acid (AGM, CA, EFB, gel, MF, wet)
- Capacity range: up to 40 Ah (maintains all sizes)
- Input: 100–240V AC, 50–60 Hz
- IP rating: IP65
- DC fuse: 4 A mini blade
- Size: 76.2 x 89 x 40.6 mm, 0.23 kg
- Mounting: bracket with strap and self-tapping screws included
Direct-mount onboard charging
The GENIUS2D is built to be permanently mounted close to the battery. It is engineered to withstand high-heat engine compartments, shock, vibration and water exposure (IP65), making it suitable for cars, boats, trucks, RVs and equipment.
Compact and energy efficient
Using maximum power density technology with advanced power conversion topologies, the GENIUS2D increases the power-to-space ratio through consolidated components and innovative thermal management. The result is a compact, lightweight charger with a high output relative to its size.
Fully automatic operation
The GENIUS2D requires no manual mode selection or technical knowledge. It detects damaged batteries and repairs them automatically, then switches to long-term maintenance mode. Continuous operation is safe with no risk of overcharging.
Explore the full range in NOCO Battery Chargers.
Specification
| Line Voltage | 100V to 240V AC |
|---|---|
| Frequency | 50Hz to 60Hz |
| Operating Temperature | -4°F to 140°F(-20° to 60°C) |
| Storage | Temperature -40° to 212°F(-40° to 100°C) |
| Relative Humidity | 0 to 95% Non-Condensing |
| Charging Current | 2 Amps DC Voltages: 12 Volts |
| Chemistry | Lead-Acid Types: AGM CA EFB Gel MF Wet |
| Capacity Range | Up to 40 Amp-Hours |
| Maintenance | All Battery Sizes |
| Power Consumption | 28 Watts (Max) Efficiency: 87% |
| Safety Short-Circuit | Yes Open-Circuit: Yes Overheating: Yes Overcharge: Yes Spark-Proof: Yes Reverse Polarity: Yes |
| Product Size Height | 3in (76.2mm) Width: 3.5in (89mm) Depth: 1.6in (40.6mm)Weight: 0.5lb (0.23kg) |
More specs
| |
What's Included
- GENIUS2D Battery Charger and Maintainer
- Mounting Bracket with Strap
- Self-Tapping Screws
- User Guide
Build your own bundle
Choose every part yourself — the more you add, the more you save.
NOCO
About the NOCO GENIUS2D
From our tech experts at CEN
The NOCO GENIUS2D is a 2A direct-mount charger and maintainer designed to be bolted in place near the battery and left there. It charges 12V lead-acid batteries up to 40Ah and maintains all sizes. Unlike the portable Genius models, it is 12V only and does not charge 6V or lithium batteries.
Who it suits
Owners of boats, classics, motorhomes and equipment who want onboard charging that is always connected, with only a mains lead to plug in. If you want a 6V or lithium-capable charger you can move between vehicles, choose the portable GENIUS2 instead.
Our tech experts advise
It is rated IP65 and built to cope with engine-bay heat, vibration and water. Both the DC and AC cables are 60.9cm, so plan the mounting position before drilling. The mounting bracket, strap and self-tapping screws are included. It weighs 0.23kg.
Explore the full NOCO range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all NOCO
Recommended For You
Discover more top-rated gear, handpicked to go with what you're viewing
More from NOCO Battery Chargers
More options from the same range, in stock and ready to go
Best SellerNOCO Genius1 6V/12V 1A Smart Battery Trickle Charger Maintainer Desulfator
£44.95
View product
NOCO GeniusPRO50 6V/12V/24V 50A Battery Trickle Charger Maintainer Desulfator
£399.95£899.95Save 55%
NOCO Genius5 6V/12V 5A Smart Battery Trickle Charger Maintainer Desulfator
£79.95
NOCO Genius2 6V/12V 2A Smart Battery Trickle Charger Maintainer Desulfator
£54.95
NOCO Genius2X4 6V/12V 8A 4-Bank Battery Trickle Charger Maintainer Desulfator
£219.95
Frequently Asked Questions
Q: Can the GENIUS2D charge 6V batteries?
A: No. The GENIUS2D is a 12V charger designed for 12-volt lead-acid batteries, including flooded, gel, AGM and other maintenance-free types.
Q: What size batteries can the GENIUS2D charge?
A: It charges batteries up to 40 Ah and can maintain batteries of all sizes.
Q: Can the GENIUS2D be mounted in the engine bay?
A: Yes. It is designed to be mounted close to the battery and engineered to withstand high-heat engine compartments, shock, vibration and water exposure, with an IP65 rating. A mounting bracket with strap and self-tapping screws are included.
