---
product_id: 168179439
title: "GENIUS2D: 2A 12V Smart Onboard Battery Charger - Direct-Mount Automatic Maintainer, Trickle Charger & Desulfator with Overcharge Protection & Temperature Compensation – for Lead-Acid Batteries"
brand: "noco"
price: "S$80"
currency: SGD
in_stock: true
reviews_count: 8
category: "Noco"
url: https://www.desertcart.sg/products/168179439-genius2d-2a-12v-smart-onboard-battery-charger-direct-mount-automatic
store_origin: SG
region: Singapore
---

# 2A max charge current Charges 12V lead-acid batteries (AGM, Gel, SLA, VRLA) Direct-mount with snap-fit bracket & screws GENIUS2D: 2A 12V Smart Onboard Battery Charger - Direct-Mount Automatic Maintainer, Trickle Charger & Desulfator with Overcharge Protection & Temperature Compensation – for Lead-Acid Batteries

**Brand:** noco
**Price:** S$80
**Availability:** ✅ In Stock

## Summary

> 🔋 Keep your ride ready—charge smarter, last longer!

## Quick Answers

- **What is this?** GENIUS2D: 2A 12V Smart Onboard Battery Charger - Direct-Mount Automatic Maintainer, Trickle Charger & Desulfator with Overcharge Protection & Temperature Compensation – for Lead-Acid Batteries by noco
- **How much does it cost?** S$80 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/168179439-genius2d-2a-12v-smart-onboard-battery-charger-direct-mount-automatic)

## Best For

- noco enthusiasts

## Why This Product

- Trusted noco brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Revive Dead Batteries:** Force Mode charges batteries down to 0V, rescuing deeply discharged cells.
- • **All-in-One Battery Care:** Charger, maintainer, trickle charger & desulfator in one compact unit.
- • **Effortless Direct Mount:** Secure snap-fit bracket with self-tapping screws for hassle-free installation.
- • **Smart Precision Charging:** Adaptive thermal sensor prevents over/undercharging for peak battery health.
- • **Safe Long-Term Maintenance:** Leave connected indefinitely with overcharge protection and pulse desulfation.

## Overview

The NOCO GENIUS2D is a compact, direct-mount 2A smart charger designed for 12V lead-acid batteries including AGM, Gel, SLA, and VRLA types. It combines charging, maintenance, trickle charging, and desulfation with temperature-compensated precision to optimize battery life. Featuring Force Mode to revive dead batteries and a rugged snap-fit mounting system, it’s perfect for automotive, marine, RV, and lawn equipment batteries. Backed by a 3-year warranty and proudly made in the USA, it ensures reliable, worry-free battery care under the hood.

## Description

The GENIUS2D is the ultimate direct-mount onboard battery charger, designed for under-the-hood charging. It acts as a battery charger, maintainer, trickle charger, and desulfator, making it the perfect solution for 12-volt lead-acid batteries (up to 40 amp-hours), including AGM, gel, SLA, VRLA, flooded, maintenance-free, deep-cycle, marine, and RV applications. It is compatible with a vast array of vehicles, such as cars, automobiles, lawn mowers, ATVs, UTVs, tractors, trucks, SUVs, RVs, campers, trailers, boats, pickups, classic cars, and more, including automotive brands like BMW, Mercedes-Benz, Porsche, Bentley, Maserati, Lexus, Audi, Ford, Chevrolet, Corvette, Cadillac, Prius, Toyota, Subaru, Nissan as well as lawn and garden vehicles such as John Deere, Kubota, Toro and more. With its rugged snap-fit mounting bracket and truss-head self-tapping screws, installation is secure and effortless on most surfaces. The GENIUS2D can charge batteries as low as 1 volt and even offers Force Mode to manually charge completely dead batteries (as low as zero volts). Its advanced monitoring system keeps your battery fully charged without the risk of overcharging, while precision pulse charging reverses sulfation and acid stratification, restoring battery health and extending performance. The package includes a 2A onboard charger (120-240VAC), 24-inch AC and DC cables with eyelet terminals, a mounting bracket, screws, and is backed by a three-year warranty. Proudly designed in the USA, the GENIUS2D makes battery maintenance simple, reliable, and hassle-free.

Review: Compact and easy to install, does a great job - Smaller than I expected but much easier to install because of its size. The mounting strap has two holes to install the plastic snap-on back to the metal of the vehicle inside the engine compartment using two self-tapping screws (provided). There are two lugs on the snap-on back that accommodate a velcro strap (also provided) which ties down the charger in addition to the snap-on back that is latched to the charger. A well thought out system to ensure that the charger cannot shake loose when the vehicle is moving. In my case I have attached the charger to the wall above the front passenger tire well of my Silverado truck. That way, the charging leads can easily reach the battery although the power lead is too short to go anywhere near the front grill (Maybe 2-3 ft long). My GFI socket is on the side of my garage, about 45ft away from the engine compartment but it's easy to run a 50ft outside-rated cable (SJTW 12/3) to the charger power cable under the hood. With the temperatures around 31 to 42 degrees F right now and a new battery I am able to keep the battery fully charged in a truck that sometimes sits on an outside concrete pad for 2-3 weeks at a time. I am very pleased with this product. It gives me piece of mind that I will always be able to crank my engine whatever the weather. It will also help me to prolong the battery life. I now own two NOCO chargers, both are able to condition a battery as well as charge it. My other NOCO charger is a NOCO GENIUS 10A waterproof marine charger which can be used for several different battery types and does a great job for my lawn tractor and 12v shed battery for LED lights. It can handle lithium batteries also which works for my kayak. My neighbors call me when they need help with charging because they now understand the problems caused by sulphates which NOCO battery chargers can deal with. NOCO make great products. I have no hesitation recommending them. (NOTE: I gave this 5 stars but only four lit up. The first one stayed empty).
Review: Seems to work very well. Good charger/maintainer and restorer as well. - I got this partially because I need a SLA charger and maintainer but a little bit also because of it restoration function. Some newer charger/maintainers like this also have the ability to apply a pulse that can help break up crystalization inside the battery. While this will not bring an old or damaged battery back to a new state, it does help with things like when a battery is allowed to discharge too far at least once but not significantly damaged otherwise. I didn't know for sure if it would help with my own car's battery, but decided to try it anyway. It actually did indeed seem to help. Before using this it would only last a few minutes with the radio powered on after the car was shut off before it would shut it down due to low voltage. Now it lasts about 30 minutes. This also translates to holding up much better when sitting over time. This is not magic, so it is very limited in what it is able to do (more serious damage may not even be repairable short of basically rebuilding the battery,) but in cases of one of the more common minor causes of SLA battery capacity loss it does indeed help. As for the actual charging and maintenance functions, these seem to work quite well. It's only a 2A maximum charge rate (it lowers twice in later stages of the charge process) so not well suited to large batteries such as those of a car except as a maintainer (which needs very little actual current,) but will do in a pinch if you have the time (I believe it listed 60 hours as the time required to 100% fully charge a car battery -- although it will likely crank in much less time than that.) You will probably want one of the larger ones for those. However, it does have the advantage of being able to safely work on practically any SLA battery you can reasonably throw at it -- provided you can spare the time for a larger battery. I am also using this to maintain (and hopefully restore) a much smaller battery and so far it seems to be working just fine. I'm not clear on the difference between this one and the 2D model. This one also comes with a mount if you would like to more permanently mount it (such as inside your car.) Interestingly they seem to have made the alligator clips that come with it have screw-mounted rings that can be removed for permanent installation at the terminal screws. This way you don't need a separate set of connectors for each as the 2D model did. So this is an option for those who need to do this.

## Features

- MEET THE GENIUS2D — A direct-mount onboard battery charger for an under-the-hood battery charging. It's the all-in-one charging solution - battery charger, battery maintainer, trickle charger, plus desulfator.
- DO MORE WITH GENIUS — Designed for 12-volt lead-acid (AGM, Gel, SLA, VRLA) batteries, including flooded, maintenance-free, deep-cycle, marine and RV batteries.
- DIRECT MOUNT — Securely attaches near the battery using a durable snap-fit mounting bracket and installs easily into most surfaces with truss-head self-tapping screws for a hassle-free, reliable setup.
- ENJOY PRECISION CHARGING — An integrated thermal sensor dynamically adjusts the charge based on ambient temperature, preventing overcharging in hot weather and undercharging in cold, ensuring optimal battery performance.
- CHARGE DEAD BATTERIES — Charge batteries from as low as 1 volt, or use Force Mode to manually charge completely dead batteries down to zero volts. Perfect for recovering deeply discharged or neglected batteries.
- BEYOND MAINTENANCE — Keep your battery fully charged without worrying about overcharging. Our smart charger constantly monitors the battery, allowing you to leave it connected safely - indefinitely - for worry-free maintenance.
- RESTORE YOUR BATTERY — Precision pulse charging automatically detects and reverses battery sulfation and acid stratification, restoring your battery's health for improved performance and extended lifespan.
- WHAT'S IN THE BOX — Includes a 2A onboard charger, 24-inch AC cable, 24-inch DC cable with eyelet terminals, mounting bracket, screws, and a 3-year warranty. Proudly designed in the USA.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07W3QSMF9 |
| Battery Charge Time | 40 Hours |
| Best Sellers Rank | #306 in Automotive ( See Top 100 in Automotive ) #7 in Battery Chargers |
| Brand | NOCO |
| Built-In Media | 3-Year Limited Warranty, Battery Charger User Guide, GENIUS2D 2A Direct-Mount Smart Battery Charger and Battery Maintainer With Integrated Eyelet Terminals |
| Color | Black |
| Current Rating | 2 Amps |
| Customer Reviews | 4.6 out of 5 stars 10,271 Reviews |
| Global Trade Identification Number | 00046221180138 |
| Input Voltage | 120 Volts |
| Item Dimensions D x W x H | 3.47"D x 3.43"W x 6.5"H |
| Item Height | 1.5 inches |
| Item Type Name | NOCO GENIUS2D, 2A Direct-Mount Onboard Car Battery Charger, 12V Automotive Charger, Battery Maintainer, Trickle Charger, Float Charger and Desulfator for Marine, ATV, Truck and Deep Cycle Batteries |
| Item Weight | 11.68 ounces |
| Manufacturer | NOCO |
| Mfr Part Number | GENIUS2D |
| Output Voltage | 12 Volts |
| Specification Met | CEC, FCC, UL |
| UPC | 046221180138 |
| Unit Count | 1.0 Count |
| Warranty Description | 3-Year Limited Warranty |

## Product Details

- **Brand:** NOCO
- **Color:** Black
- **Item Weight:** 11.68 ounces
- **Output Voltage:** 12 Volts
- **Product Dimensions:** 3.47"D x 3.43"W x 6.5"H

## Images

![GENIUS2D: 2A 12V Smart Onboard Battery Charger - Direct-Mount Automatic Maintainer, Trickle Charger & Desulfator with Overcharge Protection & Temperature Compensation – for Lead-Acid Batteries - Image 1](https://m.media-amazon.com/images/I/81Q6Ag04oFL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Is this water proof?**
A: The GENIUS2D is water resistant with a rating of IP65.

**Q: Does charger retain setting if power is lost then restored**
A: First I’m not sure.  But I’m 99% sure the loss of power has no effect at all. I base this on the fact that there’s no on or off button on the unit.(no settings) It only works or doesn’t work if it’s plugged in or unplugged. So my answer is their are no settings. So if you have power it works if you don’t it doesn’t. There is a cool feature it monitors it’s invioronent if it’s to hot it will not turn on.

**Q: will this work for motorcycle batteries?**
A: Yes; it works for my motorcycle, and the device is tiny enough to hide in a saddlebag.

**Q: My battery is in the trunk,,can I connect it to the jump points under the hood instead of directly to the battery in the trunk?**
A: Battery is in the trunk.  That must be an European vehicle.  Anyway, as long as you can securely tie the red and black eye hook of the charger to the jump points under the hood.  I have two cars with battery in the trunk.  What I did was one of vehicle I connect the NOCO charger 5-AMP, NOCO GENIUS GEN5X1 directly to the battery and on the other vehicle I use a portable NOCO 10-AMP, NOCO GENIUS10 charger to the jump points under the hood.  Good luck

## Customer Reviews

### ⭐⭐⭐⭐⭐ Compact and easy to install, does a great job
*by P***G on November 14, 2025*

Smaller than I expected but much easier to install because of its size. The mounting strap has two holes to install the plastic snap-on back to the metal of the vehicle inside the engine compartment using two self-tapping screws (provided). There are two lugs on the snap-on back that accommodate a velcro strap (also provided) which ties down the charger in addition to the snap-on back that is latched to the charger. A well thought out system to ensure that the charger cannot shake loose when the vehicle is moving. In my case I have attached the charger to the wall above the front passenger tire well of my Silverado truck. That way, the charging leads can easily reach the battery although the power lead is too short to go anywhere near the front grill (Maybe 2-3 ft long). My GFI socket is on the side of my garage, about 45ft away from the engine compartment but it's easy to run a 50ft outside-rated cable (SJTW 12/3) to the charger power cable under the hood. With the temperatures around 31 to 42 degrees F right now and a new battery I am able to keep the battery fully charged in a truck that sometimes sits on an outside concrete pad for 2-3 weeks at a time. I am very pleased with this product. It gives me piece of mind that I will always be able to crank my engine whatever the weather. It will also help me to prolong the battery life. I now own two NOCO chargers, both are able to condition a battery as well as charge it. My other NOCO charger is a NOCO GENIUS 10A waterproof marine charger which can be used for several different battery types and does a great job for my lawn tractor and 12v shed battery for LED lights. It can handle lithium batteries also which works for my kayak. My neighbors call me when they need help with charging because they now understand the problems caused by sulphates which NOCO battery chargers can deal with. NOCO make great products. I have no hesitation recommending them. (NOTE: I gave this 5 stars but only four lit up. The first one stayed empty).

### ⭐⭐⭐⭐⭐ Seems to work very well. Good charger/maintainer and restorer as well.
*by J***A on December 30, 2022*

I got this partially because I need a SLA charger and maintainer but a little bit also because of it restoration function. Some newer charger/maintainers like this also have the ability to apply a pulse that can help break up crystalization inside the battery. While this will not bring an old or damaged battery back to a new state, it does help with things like when a battery is allowed to discharge too far at least once but not significantly damaged otherwise. I didn't know for sure if it would help with my own car's battery, but decided to try it anyway. It actually did indeed seem to help. Before using this it would only last a few minutes with the radio powered on after the car was shut off before it would shut it down due to low voltage. Now it lasts about 30 minutes. This also translates to holding up much better when sitting over time. This is not magic, so it is very limited in what it is able to do (more serious damage may not even be repairable short of basically rebuilding the battery,) but in cases of one of the more common minor causes of SLA battery capacity loss it does indeed help. As for the actual charging and maintenance functions, these seem to work quite well. It's only a 2A maximum charge rate (it lowers twice in later stages of the charge process) so not well suited to large batteries such as those of a car except as a maintainer (which needs very little actual current,) but will do in a pinch if you have the time (I believe it listed 60 hours as the time required to 100% fully charge a car battery -- although it will likely crank in much less time than that.) You will probably want one of the larger ones for those. However, it does have the advantage of being able to safely work on practically any SLA battery you can reasonably throw at it -- provided you can spare the time for a larger battery. I am also using this to maintain (and hopefully restore) a much smaller battery and so far it seems to be working just fine. I'm not clear on the difference between this one and the 2D model. This one also comes with a mount if you would like to more permanently mount it (such as inside your car.) Interestingly they seem to have made the alligator clips that come with it have screw-mounted rings that can be removed for permanent installation at the terminal screws. This way you don't need a separate set of connectors for each as the 2D model did. So this is an option for those who need to do this.

### ⭐⭐⭐⭐⭐ Keeps Batteries Charged Eliminates Inconvenience And Aggravation
*by M***E on January 5, 2026*

Few have the experience with batteries and charging systems that I have. I'm 68 years old and a retired professional mechanic who SPECIALIZED in batteries, starters, alternators and electrical systems. This is what I did for a living and managed a specialty battery store then my own shop that sold virtually every battery for vehicles, diagnosed and installed all related charging and starting system parts. The number one cause of alternator failure is a LOW BATTERY. The alternator is NOT A BATTERY CHARGER. It will not charge up a discharged low battery. Many many folks have heard to jump start a dead battery and let it run or drive the vehicle and it will charge up. I will NOT and puts only a small surface charge on the battery. Essentially the battery is 99% discharged. I have seven vehicles and only one doesn't have a maintainer on it. That vehicle is a non-computerized F-100 Ford. However, my Winnebago RV, 2023 ATV, Honda Sabre M/C, Honda Fit, Ford Ranger and my Dodge Caravan all have maintainers on them. Computerized vehicles that are not used daily that sit for any amount of time get low on charge. That's a fact. As a professional, I can tell you that if you want to do yourself a HUGE favor, use charger maintainers. I use the Noco Genius 1 on many things I own and this Genius 2 now just installed on my Honda Fit. Little is worse than going out to a low or dead batteries. Just as bad is starting a car with a low battery then driving it. It's very bad on the charging system and related components. These Noco products feature wide compatibility, are highly functional and are very simple to use. It really is a plug in and forget product that is highly useful. You just have to remember to disconnect it when you use the vehicle.

## Frequently Bought Together

- NOCO GENIUS2D, 2A Direct-Mount Onboard Car Battery Charger, 12V Automotive Charger, Battery Maintainer, Trickle Charger, Float Charger and Desulfator for Marine, ATV, Truck and Deep Cycle Batteries
- NOCO GCP1 15A AC Port Plug, 125V Power Inlet Socket, and Waterproof Electrical Outlet Receptacle Box with 16-Inch Integrated Outdoor Extension Cord
- NOCO GCP2 15A AC Port Plug, 125V Power Inlet Socket, and Waterproof Electrical Outlet Receptacle Box with Dual 18-Inch Integrated Outdoor Extension Cords

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-01-22*