FOXWELL NT301 Plus OBD2 Scanner & 12V Battery Tester — 2.8-inch Color Screen, Live Data

The FOXWELL NT301 Plus is a handheld OBD2 code reader that also performs 12V battery health checks, giving clear engine diagnostics and battery status in one affordable tool.

If you want to diagnose check-engine warnings, monitor live engine data, or verify a 12V battery before a trip or purchase, this compact scanner delivers straightforward results without subscriptions or apps. Upgraded from the NT301, the NT301 Plus adds battery testing while keeping fast code read/clear capability and an enlarged 2.8" color screen for easier viewing. It plugs into any standard OBDII port on 1996+ US vehicles (with broad global compatibility) and displays interpretive information so you can decide whether to repair, recharge, or replace.

How quickly will the NT301 Plus tell me what's wrong with my engine?

Plugging the unit into the vehicle’s OBDII port returns stored and pending engine codes within seconds and translates them into plain language so you aren’t decoding cryptic alphanumeric codes. You can also clear codes after repairs and review live parameters to confirm repairs worked.

• Instant read/clear of engine fault codes
• 2.8" color display for fast code interpretation
• Live data streaming (RPM, coolant temp, fuel trim, etc.)
• Data recording, playback and PC printing for documentation

What does the battery test measure, and when should I use it?

The NT301 Plus evaluates common 12V lead-acid battery types and reports state-of-health and state-of-charge plus cranking and charging performance to help you avoid unexpected no-starts. Use it before long trips, after a jump start, when a new battery is dying prematurely, or when a vehicle has been idle for extended periods.

• Compatible with flooded, AGM (flat/spiral), EFB and GEL 12V batteries
• Reports SOH, SOC, cranking/starting power and charging system condition
• Quick diagnostic routine — connect OBDII cable firmly to the battery cable
• Helps decide whether to recharge, replace, or continue using the battery

Can this scanner help me before buying a used car or passing an emissions test?

Yes — the tool reads stored codes and I/M readiness status so you can spot hidden issues a seller might not disclose and check emission readiness before a smog inspection. It also supports EVAP leak detection to find common causes like a loose gas cap or cracked hose.

• I/M readiness check and stored code retrieval for pre-purchase inspections
• EVAP leak detection for fuel system faults
• Battery check integrated into the same diagnostic session
• Portable for roadside or driveway evaluations

What vehicles and functions are supported — and what is not included?

The NT301 Plus works with most OBDII-equipped cars, trucks, motorcycles and ATVs from 1996 onward in the U.S., with broad support for newer European and Asian models. It does not perform advanced system services like ABS, SRS, transmission programming, key programming, oil reset, or battery registration. Updates require Windows; Mac and iOS are not supported.

• Covers standard OBDII protocols for 1996+ U.S., many 2001+ European and 2005+ Asian vehicles
• Not compatible with some legacy or specialist brands and pre-1996 vehicles
• Does not read airbag or tire pressure module codes, or perform service resets
• No subscription, no mobile app required — standalone operation

Who is this for: The FOXWELL NT301 Plus is aimed at DIYers, used-car buyers, home mechanics and small-fleet owners who want a reliable, inexpensive diagnostic tool that combines engine code scanning with practical 12V battery testing. If you need clear fault descriptions, live data monitoring, and a quick battery health check before a trip or sale — without ongoing fees — this unit is a practical, user-friendly choice.