FOXWELL BT301 Car Battery Tester 12V, Battery Load Tester 100-2000CCA Automotive Alternator Tester Digital Battery Analyzer Cranking Charging Checker for Car Boat Truck SUV ATV, Upgraded of BT100

Faster Results, Smarter Insights, Better Accuracy – Upgraded from the trusted BT100, the FOXWELL BT301 12V battery tester delivers stronger features and 99.9% accuracy. Whether it’s a freezing start or a pre-trip check, it finds hidden issues with your battery, starter, or alternator before they leave you stranded. A bright 2.8″ color screen and 6.5 ft cable make testing clear and convenient—inside or outside the vehicle.
Comprehensive Cold-Proof Diagnostics – Instantly check SOH, SOC, CCA, cranking voltage & time, alternator output, and loaded/no-load voltage—even in freezing temps. Ideal for spotting weak batteries or confirming replacements. Works with flooded, AGM flat/spiral, EFB, and GEL batteries(not for Lithium), making it a versatile AGM and marine battery analyzer for all climates.
Enlarged 2.8″ Color Display for Clear Results – Bigger screen, clearer answers. Get bold “good or bad” results at a glance—even in dim garages. Simple menus make this 12volt auto battery tester beginner-friendly. With the 6.5 ft cable, you can test right from the driver’s seat—no helper needed.