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

FOXWELL BT780 Car Battery Tester, 12V 24V Battery Load Analyzer with Printer 100-2000CCA Digital Automotive Cranking Charging System Checker for Car Motocycle Heavy Duty Truck Marine SUV Boat

FOXWELL BT780 Car Battery Tester, 12V 24V Battery Load Analyzer with Printer 100-2000CCA Digital Automotive Cranking Charging System Checker for Car Motocycle Heavy Duty Truck Marine SUV Boat

Product ID: 325145156

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Details

Brand
FOXWELL
Colour
Foxwell BT780
Item weight
1 Pounds
Power source
Battery

🔋12V/24V dual voltage testing

🌡️Accurate -20°C to 60°C operation

🖨️Built-in thermal printer

Description

🔧 Diagnose Like a Pro, Print Like a Boss!

INSTANT PRINTED REPORTS - Print clear, professional battery health reports on the spot—no subscriptions or fees.
SELF POWERED INDEPENDENCE - Runs on internal battery for fast, reliable testing anywhere, anytime—no vehicle power needed.
MULTI USER CUSTOM REPORTS - Supports 4 users with personalized shop/technician names and battery serial tracking.
PRO LEVEL BATTERY DIAGNOSTICS - Get precise SOH, SOC, voltage & CCA readings for cars, trucks, boats & more.
RUGGED READY FOR ANY CLIMATE - Built tough with long leads, protective case, and 99.9% accuracy from freezing cold to scorching heat.

The FOXWELL BT780 is a professional-grade 12V/24V car battery tester and load analyzer with a built-in thermal printer. It delivers highly accurate diagnostics including SOH, SOC, voltage, and cranking system checks across a wide temperature range (-20°C to 60°C). Powered by its own internal battery, it enables independent testing without vehicle power. Ideal for workshops, fleet managers, and mobile mechanics, it supports multi-user accounts and custom reports, covering a broad range of battery types and vehicles from motorcycles to heavy-duty trucks.

Specifications

ASIN	B07XFHGZ3N
Brand	FOXWELL
Brand Name	FOXWELL
Color	Foxwell BT780 12v/24v Battery Tester
Colour	Foxwell BT780 12v/24v Battery Tester
Customer Reviews	4.3 out of 5 stars 126 Reviews
Included Components	battery tester
Item Weight	454 g
Item weight	454 g
Manufacturer	foxwell
Measurement Type	Battery Tester
Min. Operating voltage	6 Volts
Minimum Operating Voltage	6 Volts
Model	Foxwell BT780 Digital Battery Analyzer
Power Source	Battery Powered
Power source	Battery Powered
Specification Met	CE, RoHS, UL
Style	6V 12V 24V Battery Tester with Printer For Car Heavy Duty Truck Buses Marine Motorcycle ATV SUV Boat Yacht Golf Carts Style 6V 12V 24V Battery Tester with Printer For Car Heavy Duty Truck Buses Marine Motorcycle ATV SUV Boat Yacht Golf Carts See more
Style Name	6V 12V 24V Battery Tester with Printer For Car Heavy Duty Truck Buses Marine Motorcycle ATV SUV Boat Yacht Golf Carts
UPC	712321445025
Upper Temperature Rating	60 Degrees Celsius

Reviews

A**R

Parfait comme commander

Comme commander,livraison rapide.

16.02.2025

M**E

A good tool at a good price!

7.08.2025

D**L

Overall works very well, but..

26.10.2023

C**N

Properly functioning

7.04.2025

S**E

Internal battery useless and print quality is poor.

11.03.2025

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