Key features

• •Full Upgrade of BT705 — The FOXWELL BT780 takes everything you loved about the BT705 and adds more functions, supporting 6V battery health test, 12V/24V cranking & charging test. Battery tester with built-in battery and printer let you test more accurate, review, and print results anytime—no external power needed. Plus, you can customize technician names and battery numbers before printing for better record-keeping and pro reporting. With a extended 6.5ft cable, 3.2-inch LCD screen, a pro rugged toolbox, and an upgraded chip with conductivity tech that boosts accuracy by 15%—makes BT780 a go-to tool for battery diagnostics
• •Unique Built-In Battery Feature — Most battery analyzer testers require power from the battery under test to power up—making it tough to get accurate results from weak or deeply discharged batteries. The BT780 car battery tester changes that. Equipped with its own built-in battery, it powers on independently, unlocking a new level of diagnostic precision and access test history anytime that ordinary battery testers on the market can't match
• •Report Print with Customizable Battery ID — Save on store printing fees with the battery load tester's built-in printer that provides clear, one-click test reports. Customize print reports with your store(home) name, 4 technician accounts and unlimited battery serial numbers for tracking status of different battery and share it to your client or technicians. Includes 3 rolls of 57*30mm thermal paper, with replacements readily available online—no worries about running out
• •User-Oriented Design Upgrades — With a 6.5ft extended cable, this foxwell battery tester supports easy one-man operation. Comes with a bonus TF card and reader keeps your tool always up to date. The large buttons and 3.2" digital LCD screen ensure simple operation and clear results—without confusing pointers, and rugged toolbox makes storage and transport effortless, perfect for mobile diagnostics. Built with fully insulated reverse-polarity clamps, high-conductivity clip leads, and FOXWELL-grade chip, it delivers 99.9% accuracy while minimizing battery drain—professional results in just seconds
• •Know Battery Status in Advance — Avoid the frustration of a dead car battery! The battery analyzer check battery health, analyze cranking system and alternator output, providing comprehensive test reports, battery voltage, resistance, SOC, SOH, starter state, cranking voltage, and charging details to assess performance, condition, and replacement timing. Easily perform Battery Health, Cranking, and Charging tests, and print clear valuable results for quick reference—perfect for before road trips or battery troubleshooting
• •Wider Application for Pros& Novice — This battery tester with printer handles all 100-2000CCA batteries, including regular flooded, AGM flat plate, AGM spiral, gel, EFP, and start-stop AGM types. Ideal for diagnosing batteries in cars, pickup trucks, heavy-duty trucks, RVs, boats, buses, motorcycles, yachts, golf carts, lawnmowers, heavy machinery, and more. Perfect for pro technicians, auto mechanic, roadside assistance team, battery dealer, fleet manager, DIYers, novices