Upgraded of NT301, FOXWELL NT301 Plus 2-in-1 OBD2 Scanner Battery Tester, Professional Check Engine Code Reader Car Diagnostic Tool, 12V Cranking Charging Analyzer for 1996+ Newer Vehicle

Key Specifications

Brand
FOXWELL
Product Dimensions
3.7"L x 1.6"W x 5.71"H
Operating System
Plug and Play; Only support update with Windows system, not support MAC/IOS; 12V Battery Test Only
Power Source
GRS-certified Materials (Global Recycled Standard)
Screen Size
2.8 Inches
Product Dimensions
‎3.7 x 1.26 x 5.71

Reviewed by 2485 people this week!

★★★★★
Buy at Amazon
AmazonPrime Delivery • 30-Day Returns
FOXWELL
4.5
2485 reviews
Buy at Amazon
AmazonPrime Delivery • 30-Day Returns

Upgraded of NT301, FOXWELL NT301 Plus 2-in-1 OBD2 Scanner Battery Tester, Professional Check Engine Code Reader Car Diagnostic Tool, 12V Cranking Charging Analyzer for 1996+ Newer Vehicle

The FOXWELL NT301 Plus is an upgraded professional automotive diagnostic tool designed for both DIY enthusiasts and mechanics. Combining OBD2 engine diagnostics with a full 12V battery test, this 2-in-1 scanner allows users to check engine faults, reset check engine lights, and monitor battery health in a single device. Featuring a 2.8-inch color display, fast DTC reading, live data visualization, and broad vehicle compatibility, the NT301 Plus delivers reliable, accurate diagnostics for vehicles from 1996 and newer. Its Climate Pledge Friendly design ensures professional performance with an environmentally conscious approach.

Free Shipping
2-Year Warranty
30-Day Returns

Key Features

2 in 1 Tool for Engine & Battery: More than just an engine analyzer, the FOXWELL NT301 Plus car scanner goes beyond the NT301 and NT201 by adding a full car battery test—so you can check both engine faults and battery health in one scan tool. With a 36% larger 2.8" color display vs. 2.4" screens, making results easier to read. This obd2 scanner with battery tester qualifies as Climate Pledge Friendly—delivering pro-level performance while letting you make a greener choice.
Fast Check Engine Light & CEL Reset: This code reader for cars and trucks quickly read DTCs, reset Check Engine Light, and display live data (RPM, coolant temp, fuel trim) in text and graphs. Supports freeze frame, onboard monitoring, component tests, and ECU info. Compatible with U.S. vehicles from 1996+, European models from 2001+, and Asian cars from 2005+ via the standard 16-pin OBDII port. Tip: Properly repair all detected issues before clearing codes. From battery health checks to OBD2 diagnostics, enjoy a seamless 2-in-1 experience — no need to change tools.
Pro-level Battery Health Analysis: Avoid no-start situations—especially in cold weather—by checking battery condition before it fails. This diagnostic tool battery analyzer measures SOH, SOC, CCA, cranking voltage/time, and starter/charging performance with 20% higher accuracy, even below 0°C (32°F). Bold Good/Replace results show status at a glance, ideal for dark garages or roadside checks. Tips: Connect the battery cable firmly to the OBD2 diagnostic cable to start battery check. Works with flooded, AGM flat/spiral, EFB, and GEL types.
DIY Battery Testing Made Easy: Skip unnecessary shop visits and surprise repair bills. With the NT301 Plus auto battery tester, you can check your battery’s health at home in minutes using professional-grade conductivity technology. Receive instant, accurate readings with heavy-duty clamps that ensure solid connections—whether your battery is weak, aging, or newly installed. One quick test often pays for the tool itself.
LED Pass/Fail I/M Check: Run an instant I/M readiness test with one hot key press. Built-in Red-Yellow-Green LEDs with audio prompts give pass/fail status at a glance. The vehicle code reader includes DTC definitions to locate failing sensors without online searches, so you know exactly when your car is inspection-ready.

The FOXWELL NT301 Plus is an upgraded professional automotive diagnostic tool designed for both DIY enthusiasts and mechanics. Combining OBD2 engine diagnostics with a full 12V battery test, this 2-in-1 scanner allows users to check engine faults, reset check engine lights, and monitor battery health in a single device. Featuring a 2.8-inch color display, fast DTC reading, live data visualization, and broad vehicle compatibility, the NT301 Plus delivers reliable, accurate diagnostics for vehicles from 1996 and newer. Its Climate Pledge Friendly design ensures professional performance with an environmentally conscious approach.

Key Considerations

1

Before purchasing the FOXWELL NT301 Plus, consider the following: Vehicle Compatibility: Supports vehicles from the U.S. (1996+), Europe (2001+), and Asia (2005+) with standard 16-pin OBDII ports. Not compatible with pre-1996 models or certain non-OBDII vehicles. 2-in-1 Functionality: Combines engine diagnostics with professional battery testing, measuring SOH, SOC, CCA, cranking voltage/time, and starter/charging performance. OBD2 Protocols Supported: ISO9141, KWP2000, J1850 VPW, J1850 PWM, and CAN. Check compatibility for special protocols or regional models. DIY Friendly: Lightweight, plug-and-play design with clear LED Pass/Fail I/M readiness indicators and audio prompts for quick inspection results. Data Monitoring & Analysis: Live data display, recording, playback, and PC report printing for a deeper understanding of vehicle performance and intermittent issues. Limitations: Supports engine and 12V battery diagnostics only. Does not include ABS, SRS, transmission, key programming, oil reset, or tire sensor functions. Updates are Windows-only.

1

2-in-1 Diagnostic Tool: Combines engine OBD2 diagnostics and full battery testing in a single device for convenience and efficiency.

2

Professional Battery Health Analysis: Measures cranking performance, battery condition, CCA, SOC, SOH, and starter/charging functionality—even below 0°C (32°F).

3

Fast and Accurate Engine Diagnostics: Reads and clears DTCs, monitors live engine data, displays freeze frame, and checks ECU information.

4

Large & Clear Display: 2.8-inch color screen with text and graph formats makes reading results easy, even in low-light environments.

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LED Pass/Fail I/M Check: Instant readiness testing for emissions inspection with visual and audio feedback.

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Broad Vehicle Support: Compatible with most OBDII vehicles from 1996 onward, covering U.S., European, and Asian makes.

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Reliability & Updates: Backed by FOXWELL’s 14+ years of expertise, with free lifetime software updates to maintain accuracy and performance.

These factors represent the most critical aspects that will impact your satisfaction with this product.

Customer Reviews

Ease of Use
2025-12-04T06:16:53.988Z

Product is easy to use with no experince

U
Matt W.
Very good, except you can be tricked into erasing codes in the car while trying to read them
2025-12-04T06:17:07.597Z

I didn't give it a 5 star because the first thing I did was erase the freaking codes. The "erase" option needs to be further down the menu option, not the fiirst freaking option. If I click Read codes, don't ask me if i want to erase codes as the first freaking question. I thought it was going to clear previous codes ON THE READER, not the freaking car. Now the dealer says they don't know what codes were there and I have to wait until they pop up again. The dealer says they get that all the time

U
Frank Shofner

Frequently Asked Questions

Efficient, Dual-Function Diagnostic Tool for Engine & Battery Health

The FOXWELL NT301 Plus is a professional-grade 2-in-1 OBD2 scanner and 12V battery tester, offering fast and reliable engine diagnostics, CEL reset, and comprehensive battery health analysis. Its large color display, live data visualization, and LED readiness indicators make it user-friendly for both home mechanics and professional users. With broad vehicle compatibility, accurate measurements, and free lifetime updates, the NT301 Plus provides an essential tool for maintaining engine performance and preventing battery-related failures. Ideal for garages, DIYers, and roadside checks, it combines convenience, precision, and versatility in a single, reliable device.