---
product_id: 219844874
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$113"
currency: SGD
in_stock: true
reviews_count: 8
category: "Noco"
url: https://www.desertcart.sg/products/219844874-genius2d-2a-12v-smart-onboard-battery-charger-direct-mount-automatic
store_origin: SG
region: Singapore
---

# 2A Smart Charging Power Revives Sulfated Batteries Thermal Sensor for Temp Compensation – 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$113
**Availability:** ✅ In Stock

## Summary

> 🔋 Charge smarter, drive longer — never get caught powerless again!

## 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$113 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/219844874-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 & Restore Tech:** Pulse charging reverses sulfation, extending battery life and performance.
- • **All-in-One Battery Care:** Charger, maintainer, trickle charger, and desulfator combined in one sleek onboard unit.
- • **Direct-Mount Convenience:** Snap-fit bracket and self-tapping screws for secure, hassle-free installation under the hood.
- • **Safe & Smart Maintenance:** Overcharge protection and spark-proof design allow indefinite connection without worry.
- • **Precision Thermal Charging:** Adaptive temperature sensor prevents over/undercharging for peak battery health.

## Overview

The NOCO GENIUS2D is a compact, 2-amp 12V smart onboard battery charger designed for lead-acid batteries. Featuring temperature-compensated precision charging, desulfation technology, and overcharge protection, it mounts directly under the hood for seamless, worry-free battery maintenance and restoration.

## Description

Automatic 12V battery charger and maintainer with thermal sensor. Provides precision charging, desulfation, and overcharge protection for lead-acid batteries.

Review: Quality and affordable - Excellent charger well made very durable and easy to use
Review: Perfect - Perfect mounted next to the battery in my van, just the job

## Features

- MEET THE GENIUS2DUK — 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, EFB, Gel, SLA, VRLA, Start-Stop) 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 FLAT 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 | B08FCV1Q2Y |
| Amperage | 2 Amps |
| Best Sellers Rank | 1,809 in Automotive ( See Top 100 in Automotive ) 27 in Car Battery Charging Units |
| Brand | NOCO |
| Customer Reviews | 4.4 4.4 out of 5 stars (430) |
| Date First Available | 6 Aug. 2020 |
| Item Weight | 330 g |
| Item model number | GENIUS2DUK |
| Manufacturer | NOCO |
| Manufacturer part number | GENIUS2DUK |
| Model | GENIUS2DUK |
| Product Dimensions | 15.24 x 10.16 x 7.62 cm; 330 g |
| Special Features | Battery Maintainer, Trickle Charger And Battery Desulfator,, IP65 Ingress Protection, Onboard Battery Charger For Under-The-Hood Applications, Spark-Proof and Reverse Polarity Protection, Temperature Compensation For Accurate Recharging |

## Product Details

- **Brand:** NOCO
- **Colour:** Black
- **Item weight:** 0.33 Kilograms
- **Output voltage:** 12 Volts
- **Product dimensions:** 8.8D x 8.7W x 16.5H centimetres

## 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)

## Questions & Answers

**Q: Does the device need to be connected to the mains when in use and the car is not being used for a few days?**
A: The idea is that you leave the device connected to the car and mains when not in use to keep the battery consistently charged. It can stay in the car near the battery pack ready for use.

**Q: The description for the noco genius2duk says it has a battery repair & conditioner mode, yet the comparison table says it doesn't - which is it ?**
A: The GENIUS2D desulfates during both the 12V and 6V charging modes. It is one of the first few steps in the charging process, if the charger detects sulfation in the battery it will automatically start desulfating during the charge, there is nothing that you need to do to activate it. The 12V Repair Mode that the larger models have is an additional mode dedicated to recovering heavily sulfated, stratified, old, damaged, and/or idle 12V batteries.

**Q: Is any using adhoc rather Onboard?**
A: Most modern cars come with modular battery’s and are covered. The idea of these units is to add a battery charger that doesn’t need to be disconnected every time.  You’d just plug the charger into an extension lead which you’d keep dry under the bonnet.

**Q: I want to connect it to a power inverter in my car's boot. Will it draw much power just to trickle charge my additional battery?**
A: The NOCO Genius chargers have not been tested to be powered by inverters or generators. In theory, it will work as long as the power requirements of the charger are met. I have listed the power requirements below for the charger, including the max amperage draw of the charger.

Working VAC: 120-240 VAC, 50-60 Hz 
Max Draw: 28W 0.12A @ 240V AC.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality and affordable
*by A***Y on 9 November 2025*

Excellent charger well made very durable and easy to use

### ⭐⭐⭐⭐⭐ Perfect
*by L***R on 9 December 2025*

Perfect mounted next to the battery in my van, just the job

### ⭐⭐⭐⭐⭐ 48h charging for deep cycle 100AH..works for me.
*by C***S on 23 August 2025*

Work brilliantly charging additional deep cycle 100AH when on hook up

## Frequently Bought Together

- NOCO GENIUS2D: 2A 12V Smart Onboard Battery Charger - Direct-Mount Automatic Maintainer, Trickle Charger & Desulfator with Overcharge Protection & Temperature Compensation – For Lead-Acid Batteries
- NOCO GC004 X-Connect 3-Meter Extension Cable Accessory for NOCO Genius Smart Battery Chargers
- NOCO GC002 X-Connect M6 Eyelet Terminal Accessory for Genius Smart Battery Chargers

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-08*