About FOXWELL
FOXWELL is a Shenzhen, China-based automotive diagnostics manufacturer founded in 2009, built around a simple goal: make vehicle diagnosis faster, simpler, and more accessible. The company launched its first OBD2 code reader series the same year it was founded, expanded into DIY and handheld terminal products in 2013, and has grown its catalog to cover OBD2 code readers and scanners, TPMS sensor and programming tools, battery analyzers, and shop equipment like smoke machines, thermal imagers, and brake fluid exchange machines.
FOXWELL has been recognized in China as a national high-tech enterprise and holds hundreds of technical patents behind its diagnostic hardware. FoxwellDiag.com, the brand's official US storefront, backs every FOXWELL-branded product with a one-year warranty, lifetime free software updates, and lifetime free tech support -- coverage that matters in a category where a scanner's usefulness depends on staying current with new vehicle protocols years after purchase.
Brand website: foxwelldiag.com
What FOXWELL makes
FOXWELL's range runs wider than the products we review. The lines we know best from our own testing are marked with a star:
OBD2 code readers & scanners
engine-only code readers up through multi-system (engine/ABS/SRS/transmission) handhelds -- featured on RevRated — featured on RevRated
Battery analyzers
12V and 24V conductance testers with cranking and alternator ripple testing -- featured on RevRated — featured on RevRated
TPMS tools
tire pressure sensor programming and diagnostic scanners
Bidirectional & professional scan tools
active-test tools with ABS bleeding, battery matching, and service reset functions
Truck & heavy-duty scan tools
diagnostic scanners built for commercial and diesel platforms
Shop equipment
smoke machines, thermal imagers, and automotive borescopes
Why we recognized FOXWELL
The RevRated Top Brand recognition isn't paid for and can't be applied for. We award it to the brands whose products consistently stand out in our hands-on category reviews. FOXWELL earned it on the strength of the products below, evaluated the same way every product on this site is: bought, run on real vehicles, and judged on merit.
FOXWELL products we rated highly
FOXWELL NT301 OBD2 Scanner
A standout in our OBD2 scanner testing: all 10 OBD2 test modes including Mode 6 on-board monitoring, live data graphing on a color TFT screen, and tri-color LED readiness indicators that give an instant emissions-readiness verdict. Validated by more than 29,000 Amazon reviews at 4.5 stars, one of the largest real-world review datasets in its price class.
Read the 7 Best OBD2 Scanners of 2026 guide →
FOXWELL NT604 Elite OBD2 Scanner
The most affordable four-system scanner in our roundup, reading engine, ABS, SRS airbag, and transmission codes from a single wired handheld. AutoVIN one-button vehicle identification removes the most common source of user error, and Wi-Fi over-the-air updates eliminate the Windows-PC dependency of the entry-level NT301. Backed by nearly 4,800 reviews at 4.4 stars.
Read the 7 Best OBD2 Scanners of 2026 guide →
FOXWELL BT705 12V/24V Battery Analyzer with Printer Port
Built for the shop or fleet that touches commercial diesel rigs: dual 12V/24V support handles passenger cars alongside Class 7-8 trucks from a single tester, and an alternator ripple test catches a failing rectifier diode before it kills the next replacement battery -- a capability no other tester in our roundup includes. Backed by 2,719 reviews at 4.5 stars.
Read the 9 Best Car Battery Testers of 2026 guide →What earned FOXWELL the recognition
- The FOXWELL NT301 is one of the products we rated highest in RevRated's 2026 OBD2 scanner testing for all-around diagnostic value, in a field that included ANCEL, Autel, and BlueDriver, backed by more than 29,000 Amazon reviews at 4.5 stars.
- A second standout from the same test group: the FOXWELL NT604 Elite is the most affordable four-system (engine, ABS, SRS, transmission) scanner in the category, with AutoVIN auto-configuration and Wi-Fi updates.
- Also a top pick in RevRated's car battery tester coverage -- the BT705's dual 12V/24V support and alternator ripple test serve working shops and diesel fleets that budget conductance testers can't reach.
- Shenzhen Foxwell Technology has built automotive diagnostic tools since 2009, recognized in China as a national high-tech enterprise and holding hundreds of technical patents on its diagnostic hardware.
- Every FOXWELL product sold through FoxwellDiag.com, the brand's official US storefront, carries a one-year warranty plus lifetime free software updates and tech support.