How you adjust the time and date?

Good day, Sorry for the late reply because Chinese New Year holiday. Here is the video, please note to hold left key, down key and the menu key to change the date. Anything else we could help, please contact us via Amazon messages. Stay healthy. Mesue

Does this bt780 battery tester need the voltage higher than 9V to run the printer?

No it has a 9 volt battery in it as well so as long as that battery is good the voltage of the cars battery doesn’t matter

How to update the software of this BT780 battery tester?

Hello Dear, Thanks for your inquiry. Here are the steps about how to update this BT780 battery tester: 1. Power on the battery tester and find FORMAT CARD on the main menu. 2. Remove TF card from the tester and connect it to computer via card reader in the case. 3. Download BT780_Firmware_V... from Foxwell website(old and new are all allowed). 4. Put TF card back to the analyzer, and select FIRWARE UPDATE from the Main menu. 5. Input 1234 and click Enter button. After the tester restart automatically, the software is updated successfully. If you have any other questions, pls feel free to contact us directly below. Best wishes, OBDZON amazonsupport@foxwelltech.com

Is there U.S. based support?

Hi Wayne C., thanks for your inquiry. Yes, usually Foxwell BT780 car battery tester supports U.S. Any other questions, please feel free to contact us for further assistance. :) May you and your family safe and healthy! OBDZON Link to contact us: https://amzn.to/3poRTiH Email: amazonsupport@foxwelltech.com

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FOXWELL Car Battery Powered Load Tester for 6V 12V 24V Cranking and Charging Start-Stop System Test Tool BT780 Auto Batteries Analyzer with Built-in Thermal Printer & Carrying Case (Black)

FOXWELL Car Battery Powered Load Tester for 6V 12V 24V Cranking and Charging Start-Stop System Test Tool BT780 Auto Batteries Analyzer with Built-in Thermal Printer & Carrying Case (Black)

Product ID: 407402175

Details

Brand
FOXWELL
Power Source
Battery
Style
Regular
Colour
Black
Item Weight
1 Pounds

🔋6V/12V/24V multi-voltage testing

❄️Operates reliably -20°C to 60°C

🖨️Built-in thermal printer for instant reports

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23793180₫

Duties & taxes included

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Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Power up your diagnostics with FOXWELL BT780 — the pro’s choice for flawless battery testing!

FLEET WORKSHOP READY - Supports multi-user accounts and custom reports for seamless team collaboration and professional record-keeping.
ALL WEATHER RELIABILITY - Engineered to deliver 99.9% accurate results from freezing winters to scorching summers.
INSTANT ON SITE REPORTING - Print detailed, customer-ready battery health reports in seconds—no apps or subscriptions needed.
PRO GRADE PRECISION DIAGNOSTICS - Advanced SOH/SOC & cranking tests for all battery types, ensuring you never miss a failing cell.
TRUE PORTABILITY WITH BUILT IN POWER - Independent battery power lets you test off-grid or deeply discharged batteries anywhere, anytime.

The FOXWELL BT780 is a professional-grade, battery-powered automotive load tester supporting 6V, 12V, and 24V systems. It features a built-in thermal printer for instant, detailed reports, operates accurately in extreme temperatures (-20°C to 60°C), and supports multi-user tracking for workshops and fleets. Designed for mobile mechanics and service pros, it delivers reliable diagnostics on battery health, cranking, and charging systems across a wide range of vehicle types.

Specifications

ASIN	B07XFHGZ3N
Best Sellers Rank	#230,798 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #438 in Car Batteries & Accessories #993 in Battery Tools #1,402 in Diagnostic, Test & Measuring Tools
Brand	FOXWELL
Brand Name	FOXWELL
Colour	Black
Customer Reviews	4.4 out of 5 stars 126 Reviews
Included Components	battery tester
Item Weight	454 g
Manufacturer	foxwell
Measurement Type	Battery Tester
Min. Operating Voltage	6 Volts
Minimum Operating Voltage	6 Volts
Model Number	Foxwell BT780 Digital Battery Analyzer
Part Number	foxwell bt780
Power Source	Battery Powered
Power Source Type	Battery Powered
Specification Met	CE
Style	Regular
Style Name	Regular
UPC	712321445025
Upper Temperature Rating	60 Degrees Celsius

Reviews

A**R

16.02.2025

M**E

7.08.2025

D**L

26.10.2023

C**N

7.04.2025

S**E

11.03.2025

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