FOXWELL NT301 NT301 Plus 2 in 1 Battery Tester Code Reader Scan Tool
Introducing the FOXWELL NT301 + NT301 Plus 2 in 1 Battery Tester Code Reader Scan Tool OBD2 Scanner Live Data Mechanic OBDII Diagnostic Tool for Check Engine Light: your all-in-one solution for comprehensive vehicle diagnostics and battery health checks.
Perfect for technicians and DIY enthusiasts alike, the NT301 Plus provides all the functionalities of its predecessor, NT301, alongside additional features such as a 12V battery analyzer that supports regular flooded, AGM, and gel batteries.
With capabilities to perform full OBDII/EOBD troubleshooting, one-click I/M readiness for smog checks, and real-time live data streaming in text and graph formats, this versatile tool ensures your vehicle remains in top condition.
It even helps avoid battery damage through health and system tests, making vehicle maintenance both easy and affordable.
Have You Ever Wanted a Reliable Tool to Diagnose Car Issues and Test Batteries?

Meet the FOXWELL NT301 + NT301 Plus 2 in 1 Battery Tester Code Reader Scan Tool OBD2 Scanner Live Data Mechanic OBDII Diagnostic Tool for Check Engine Light
Let’s dive into a full review of this versatile tool that combines the best of both worlds: a robust battery tester and a highly capable OBDII scanner.
The Importance of NT301: Latest Enhanced Vehicle Doctor
The FOXWELL NT301 Plus isn’t just your typical OBDII scanner. It’s your one-stop solution for a multitude of diagnostic needs. It handles full OBDII and EOBD troubleshooting, making it perfect for both technicians and DIY enthusiasts. One-click I/M Readiness helps you pass smog checks easily, while the 12V Battery Analyzer ensures your car’s battery is functioning at its best.
The Battery Tests that Make a Difference
Battery troubles can be a major headache, but with FOXWELL NT301 Plus, you’re in good hands. Whether you want to check the battery health, diagnose issues with the charging system, or inspect the starting (cranking) system, this tool covers it all.
An Array of Battery Tests:
- Battery Health Test – This function checks the battery’s working condition, helping you avoid unnecessary recharge cycles.
- Charging System Test – You can assess the generator, rectifier diode, and charging current, ensuring everything is in top shape.
- Battery Voltage Readings – Detect faults and bad cells to judge if your battery needs replacing.
- Starting (Cranking) System Test – Ensure your starter motor is working properly.
One-Click I/M Readiness: Essential for Smog Check
If you’re tired of failing your vehicle’s emissions test, this feature is a game-changer.
The one-click I/M Readiness button allows you to get the emission readiness status and troubleshoot codes quickly. The colored LED lights and in-built beeper provide both visual and audible cues, making it easier to stay compliant with emission standards.
A Comprehensive Automotive Battery Tester
With this tool, you can analyze different battery conditions, including voltage, measured value, SOH (State of Health), SOC (State of Charge), and resistance.
It supports multiple rating systems like CCA, CA, MCA, JIS, DIN, IEC, EN, and SEA, catering to a variety of battery types such as regular flooded, AGM flat plate, AGM spiral, and GEL batteries.
Real-time Diagnostic Live Data Stream in Graphic
Thinking of pinning down that elusive car issue?
The FOXWELL NT301 Plus features real-time diagnostic live data streams in both text and graphical formats, giving you an in-depth look at various vehicle sensors. Highlight suspicious or symptom-specific data parameters to quickly and accurately diagnose issues.
Here’s a quick breakdown to summarize the main features:
| Key Feature | Description |
|---|---|
| OBDII/EOBD Troubleshooting | Complete diagnostic solutions for all OBDII and EOBD cars |
| One-click I/M Readiness | Quickly checks emissions readiness status |
| 12V Battery Analyzer | Tests regular flooded, AGM, and GEL batteries, measuring volts, SOH, SOC, and resistance |
| Various Battery Tests | Battery Health, Charging System, Battery Voltage, and Starting System Tests |
| Real-time Data Stream | Live data streams in text and graph formats for detailed diagnostics |
| Multiple Rating Systems Supported | Includes CCA, CA, MCA, JIS, DIN, IEC, EN, and SEA ratings |
| Visual and Audible Alerts | In-built LEDs and beeper provide instant feedback for emissions and diagnostic issues |
By breaking all these features down, you get a glimpse of just how comprehensive and powerful the NT301 Plus is in addressing both common and complex automotive diagnostic needs.
A Deep Dive into the Features
Full OBDII and EOBD Troubleshooting
One of the most crucial features of the FOXWELL NT301 Plus is its full OBDII and EOBD troubleshooting capabilities. This means you can diagnose issues related to:
- Engine and transmission
- Emissions control systems
- Fuel systems
- Ignition and battery systems
You’ll have all the tools necessary to maintain your vehicle like a pro. It supports all 10 OBDII test modes such as live data, O2 sensor test, and component test, among others.
One-Click I/M Readiness
Whether you’re prepping for an emissions test or just want to make sure your vehicle’s systems are functioning correctly, the one-click I/M Readiness feature simplifies the process. Within seconds, you can gain insights into your car’s readiness for an emissions test, eliminating any unpleasant surprises.
Visual and Audible Alerts
The built-in colored LED lights and beeper make it incredibly user-friendly. Visual learners will appreciate the immediate, clear graphical indication, while the beeper adds an audial cue for those who prefer auditory alerts.
12V Battery Analyzer
One of the standout characteristics of the NT301 Plus is its inclusion of a 12V battery analyzer. Car batteries are often overlooked, but they play a crucial role in vehicle performance and longevity. The tool’s battery analyzer can test regular flooded, AGM, and GEL batteries, providing accurate readings on volts, measured value, SOH, SOC, and resistance.
Detailed Battery Information
The battery tests cover various aspects like:
- SOH (State of Health): Provides an overall assessment of your battery’s life.
- SOC (State of Charge): Indicates the current charge of the battery.
- Resistance: Helps detect internal faults or bad cells.
Charging System Test
The NT301 Plus takes the guesswork out of your vehicle’s charging system. You can effortlessly check the working condition of the generator, rectifier diode, and charging current, ensuring your charging system is functioning optimally.
Starting (Cranking) System Test
This feature checks the condition of the starter motor, helping you diagnose issues that could prevent your car from starting smoothly.
Versatility in Battery Testing
The FOXWELL NT301 Plus supports multiple rating systems:
Rating Systems Included:
- CCA (Cold Cranking Amps)
- CA (Cranking Amps)
- MCA (Marine Cranking Amps)
- JIS (Japan Industrial Standard)
- DIN (Deutsches Institut für Normung)
- IEC (International Electrotechnical Commission)
- EN (European Norm)
- SEA (Society of Automotive Engineers)
With the ability to test various types of batteries and rating systems, this tool is exceptionally versatile and suits almost all needs.
Real-time Diagnostic Live Data Stream
This feature enables you to monitor your car’s vital stats in real time. Displayed in text and graphical formats, the live data stream helps you focus on any suspicious or symptom-specific data parameters such as:
- FUELSYS (Fuel System Status)
- ECT (Engine Coolant Temperature)
- EVAP_PCT (Commanded Evaporation Purge)
The graphical representation aids in easier analysis and quicker diagnostics.

Pros and Cons
Even the most advanced tools come with their own set of advantages and potential drawbacks. Let’s sum them up.
Pros:
- Comprehensive Diagnostic Tool: Covers OBDII/EOBD troubleshooting and battery testing, all-in-one.
- User-Friendly: One-click I/M Readiness and easy-to-understand visual and auditory alerts.
- Real-Time Data: Live data streams in graphical format assist in quicker diagnostics.
- Affordable Solution: Combining multiple diagnostic tools into one makes it cost-effective.
- Multiple Battery Testing Options: Tests a variety of battery types and rating systems.
Cons:
- No Alternator Load Test: Despite its comprehensive features, it does not support alternator load testing.
- May Require Regular Updates: Like any electronic diagnostic tool, keeping the firmware up-to-date is essential for optimal performance.

Why You Need the FOXWELL NT301 Plus
Whether you’re a professional technician or a DIY enthusiast, the FOXWELL NT301 Plus is your go-to tool for a comprehensive vehicle diagnostics experience. It’s user-friendly, multi-functional, and exceptionally reliable.
Particularly, if you find yourself struggling with persistent check engine lights or unreliable battery power, this tool offers pinpoint diagnostics that can save you time, money, and headaches.
The option to diagnose and monitor in real-time will make sure you catch potential problems before they escalate into costly repairs.

Wrap-Up: The Ultimate Diagnostic Companion
Investing in the FOXWELL NT301 + NT301 Plus 2 in 1 Battery Tester Code Reader Scan Tool OBD2 Scanner Live Data Mechanic OBDII Diagnostic Tool for Check Engine Light is a decision you won’t regret.
The extensive functionalities, user-friendly design, and precise, real-time data outputs make it an indispensable part of your automotive toolkit.
Whether it’s tackling check engine lights, running battery diagnostics, or ensuring your vehicle’s emissions are up to par, this device does it all.
So next time you’re under the hood, let the FOXWELL NT301 Plus be the first tool you reach for. Your vehicle will thank you, and so will your wallet.













