Research-based comparison: We have not hands-on tested these units. This comparison uses FOXWELL first-party documentation and current marketplace data.
Affiliate disclosure: As an Amazon Associate, Scan Tool Compass earns from qualifying purchases.
Quick Answer
Choose the FOXWELL NT301 if you only need a straightforward OBD2 engine-code reader. Choose the NT301 Plus if you want the same basic diagnostic tier plus a verified 12V battery-testing function in one handheld tool. The Plus does not upgrade you into ABS, SRS, transmission, full-system, or bidirectional diagnostics.
FOXWELL NT301 vs NT301 Plus
| Feature | NT301 | NT301 Plus |
|---|---|---|
| Generic OBD2 diagnostics | Yes | Yes |
| Read / clear DTCs | Yes | Yes |
| I/M readiness | Yes | Yes |
| 12V battery testing | Not part of the verified NT301 scope | Yes |
| ABS / SRS / transmission | No verified support | No verified support |
| Bidirectional tests | No | No |
| Price snapshot* | $57.99 | $79.98 |
*Prices are time-sensitive.
Why Choose the NT301?
The NT301 is the simpler purchase when your job is reading/clearing Check Engine codes and checking emissions readiness. Paying more for the Plus makes little sense if you already own a battery tester or do not need battery-status checks.
Check current FOXWELL NT301 price on Amazon →
Why Choose the NT301 Plus?
The NT301 Plus combines basic OBD2 diagnosis with verified 12V battery testing. That is the core upgrade. It can be useful for owners who want a quick battery-health workflow beside standard Check Engine diagnosis without carrying a second basic tool.
Check current FOXWELL NT301 Plus price on Amazon →
What the Plus Does Not Add
The Plus name can sound like a diagnostic-tier upgrade, but our verified first-party evidence does not support ABS, SRS, transmission, all-system, or bidirectional capability. If those systems are your reason for upgrading, skip both and consider the FOXWELL NT604 or another verified higher-tier scanner.
Bottom Line
NT301 = basic OBD2 diagnosis. NT301 Plus = basic OBD2 diagnosis + 12V battery testing. Buy the Plus only if that second job is useful to you.
Methodology & Sources
- FOXWELL NT301
- FOXWELL NT301 Plus