FOXWELL NT301 Plus OBD2 Code Reader and 12V Battery Tester

Reader Tester: The FOXWELL NT301 Plus combines OBD2 engine diagnostics with testing for 12V lead-acid batteries. It suits DIY users who want code reading, live engine data and battery checks in one handheld tool, but it is not a full-system scanner and does not support several service functions.

At a glance

Combines engine-code diagnostics and 12V battery testing, so both functions are available in one device.
Reads and clears engine trouble codes, displays live data, and includes a DTC lookup library.
Provides battery health, cranking and charging-system checks for listed 12V lead-acid battery types.
I/M readiness and EVAP testing are listed, along with recording and playback of live data and PC report printing.

Price

$119.99Save 20%

Reference price: ~~$149.99~~

Price checked: Nov 13, 2026

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Often bought together

FOXWELL NT301 NT201 CASE OBD2 Scanner Professional Enhanced OBDII Diagnostic Box

$39.00

Pros and cons

Pros

One device covers basic OBD2 engine checks and 12V battery testing.
Live engine data and plain-language DTC definitions can help users understand a check-engine warning before seeking repairs.
The listed compatibility covers a range of model-year thresholds across U.S., European and Asian vehicles.

Cons

Limited to engine and 12V battery diagnostics, rather than ABS, SRS or transmission scanning and service resets.
Battery checks are for 12V batteries and the listing says there is no load test.
PC updates are described as Windows-only, not Mac or iOS.

Technical specifications

8 specifications

Identity
Brand	FOXWELL
Model	NT301 Plus

Display and video
Screen size	2.8 inches

Power and battery
Power configuration	2025 Upgraded Ver.of Foxwell NT301+ Recommended by Major YouTuber /Mechanic+Powerful Function of OBD

Dimensions and installation
Dimensions listed	9.4 x 3.2 x 14.5 cm; 600 g
Weight listed	600 g

Diagnostic functions
Supported battery types	Flooded, AGM (flat/spiral), EFB, and GEL
Vehicle coverage stated	1996+ U.S. vehicles, 2001+ European models, and 2005+ Asian cars via the standard 16-pin OBDII port

What to know before buying

Listing details to confirm

The listing inconsistently labels the device's power configuration with promotional text, while its stated functions describe OBD operation and 12V battery testing. Its compatibility is not universal: the listing excludes pre-1996 vehicles and names some makes and models that may not work, with special protocols potentially requiring an extra connector. Confirm vehicle and protocol support before purchase. Battery testing requires the battery cable to be firmly connected to the OBDII diagnostic cable. It does not support ABS, SRS, transmission, key programming, oil reset or battery registration. Fix vehicle issues before clearing codes.

Who is it for?

A good fit for

DIY vehicle owners seeking engine-code and live-data checks for a supported OBDII vehicle.
Drivers who want battery health, cranking and charging checks for supported 12V lead-acid batteries.
Home mechanics who may find I/M readiness and EVAP checks useful.

Less suited to

Buyers needing ABS, SRS, transmission diagnostics, key programming or service resets.
Users who need a battery load test, testing beyond 12V, or diagnostics for unsupported vehicles and protocols.

FOXWELL NT301 Plus OBD2 Code Reader and 12V Battery Tester · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 2,700 ratings

5 stars71%71%
4 stars17%17%
3 stars4%4%
2 stars3%3%
1 star5%5%

Customer feedback describes the scanner as easy to use and handy, with users reporting effective code reading and accurate readings. The supplied feedback also expresses positive views of compatibility and value. These are customer perceptions, not a guarantee of vehicle coverage or diagnostic accuracy. The listed OBDII year ranges and exclusions matter when checking fit, while the combination of engine diagnostics and 12V battery tests aligns with the tool's two stated uses.

Positive themes

Customers describe it as easy to use and convenient.
Customers report effective code reading and accurate readings.
Customer feedback includes positive comments about compatibility and value.

Frequently asked questions

Does the NT301 Plus test car batteries?

The listing describes battery health, cranking and charging-system tests for 12V lead-acid batteries, including flooded, AGM, EFB and GEL types. It also says the tool has no load test.

What vehicle years does it support?

The listing states 1996+ U.S. vehicles, 2001+ European models and 2005+ Asian cars using a standard 16-pin OBDII port. It also lists exclusions and possible protocol or connector limitations, so check your specific vehicle.

Can it scan ABS or airbag systems?

No. The listing limits diagnostics to the engine and 12V battery, and says ABS and SRS are not supported.

Can it print diagnostic reports?

The listing describes recording and playback of live data and PC printing of reports. It says updates are Windows-only, not for Mac or iOS.