---
product_id: 454438840
title: "FOXWELL Car Battery 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 …"
brand: "foxwell"
price: "40417263₫"
currency: VND
in_stock: true
reviews_count: 5
category: "Foxwell"
url: https://www.desertcart.vn/products/454438840-foxwell-car-battery-load-tester-for-6v-12v-24v-cranking
store_origin: VN
region: Vietnam
---

# 6V/12V/24V multi-voltage support Accurate from -20°C to 60°C Built-in thermal printer, no apps needed FOXWELL Car Battery 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 …

**Brand:** foxwell
**Price:** 40417263₫
**Availability:** ✅ In Stock

## Summary

> 🔧 Diagnose like a pro, print like a boss.

## Quick Answers

- **What is this?** FOXWELL Car Battery 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 … by foxwell
- **How much does it cost?** 40417263₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/454438840-foxwell-car-battery-load-tester-for-6v-12v-24v-cranking)

## Best For

- foxwell enthusiasts

## Why This Product

- Trusted foxwell brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Multi-User & Traceable:** Supports 4 user profiles with customizable reports to boost shop accountability and trust.
- • **Instant Printable Reports:** Generate professional, customer-ready printouts—no smartphone or subscriptions required.
- • **Power-Independent Testing:** Built-in battery lets you test dead or off-grid batteries anytime, anywhere.
- • **All-in-One Pro Diagnostics:** Complete battery, starting & charging system tests in one sleek device.
- • **Extreme Condition Accuracy:** Reliable results from freezing cold to scorching heat, so you never second-guess.

## Overview

The FOXWELL BT780 is a professional-grade car battery load tester supporting 6V, 12V, and 24V systems, including start-stop batteries. It features a built-in battery for independent testing, an integrated thermal printer for instant reports without apps, and delivers precise diagnostics even in extreme temperatures (-20°C to 60°C). Designed for automotive pros and serious DIYers, it supports multiple battery types and user profiles, streamlining diagnostics with traceable, customer-ready documentation.

## Description

test 12v/24v automotive batteries

Review: Comme commander,livraison rapide.
Review: This battery, starting, a d charging system tester is excellent. I purchased it to .ake my life easier when doing an inspection that requires this information. It comes in a nice hard carrying case. I open the case, attach the sufficiently sized alligator clips to the tester body, then attach the clips the the battery being tested. I can test only a battery outsideof a vehicle if I want to. Or I can test the battery in a vehicle, then proceed to start the vehicle in order to test the starter cranking voltage, then once running I can finish by testing the alternator and charging system. Once the tests are complete and the program has run, I can print out a receipt that states whether the battery and subsequent tests have passed or failed. It is all very intuitive and easy to use. Similar to an alignment machine it really walks you through the steps. So, this battery, starting, and charging system tester, is a winner in my book.

## Features

- ALL-IN-ONE PROFESSIONAL BATTERY DIAGNOSTICS - The FOXWELL BT780 is a professional all-in-one battery analyzer with a built-in power supply and integrated thermal printer, delivering complete battery status, starting and charging system diagnostics. It accurately tests voltage, CCA, internal resistance, SOC, SOH for 6V batteries, as well as cranking performance and alternator output for 12V/24V systems—providing technicians/serious DIYers with fast, independent, and fully documented results in one advanced tool.
- CONSISTENT ACCURACY IN EXTREME CONDITIONS – Engineered for long-term reliability, the BT780 printable battery tester delivers stable, precise results from -20 °C to 60 °C. While many basic battery testers struggle with accuracy in cold or high-heat environments, the FOXWELL battery tester maintains dependable performance where critical decisions depend on trustworthy data—making it a smarter investment than replacing entry-level tools over time.
- INDEPENDENT POWER FOR TRUE PROFESSIONAL TESTING - Unlike most car battery testers that rely on vehicle or battery power, the FOXWELL BT780 features a built-in battery, allowing reliable testing of deeply discharged, stored, or off-grid batteries. Ideal for mobile technicians, fleet service, and roadside diagnostics where power independence matters.
- BUILT-IN PRINTER WITH NO APPS OR SUBSCRIPTIONS - Generate clean, customer-ready reports in seconds using the integrated thermal printer—no smartphone, no app pairing, and no recurring fees. Instantly document voltage, CCA, SOC/SOH, cranking performance, and alternator output to build trust and streamline professional workflows.
- TRACEABLE REPORTS WITH MULTI-USER ACCOUNT SUPPORT - Designed for accountable shop operations, this automotive battery tester supports up to 4 user profiles and customizable report headers including shop name, technician ID, and battery serial numbers. Every test is clearly documented, reducing errors, disputes, and repeat diagnostics.
- ONE TOOL FOR NEARLY EVERY BATTERY YOU SERVICE – Supports 100–2000 CCA Flooded, AGM (Flat/Spiral), EFB, Gel, and Start-Stop AGM batteries across cars, trucks, RVs, motorcycles, marine and agricultural equipment, generators, and commercial fleets. Designed for automotive repair shops, dealerships, fleet maintenance teams, mobile service providers, and battery retailers, it’s a single professional analyzer that reduces tool clutter and maximizes return on investment.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07XFHGZ3N |
| Batteries Required? | No |
| Batteries included? | No |
| Colour | Foxwell BT780 12v/24v Battery Tester |
| Customer Reviews | 4.4 4.4 out of 5 stars (125) |
| Date First Available | 17 July 2022 |
| Included Components | battery tester |
| Item Package Quantity | 1 |
| Item Weight | 454 g |
| Item model number | Foxwell BT780 Digital Battery Analyzer |
| Manufacturer | foxwell |
| Measurement Accuracy | 0.5 |
| Package Dimensions | 36.91 x 27.41 x 8.61 cm; 453.59 g |
| Part Number | foxwell bt780 |
| Power Source | Battery Powered |
| Size | Foxwell 12v/24v battery analyzer BT780 |
| Special Features | 1. Replaceable test lines |
| Style | Thermal |
| Voltage | 12 Volts |

## Product Details

- **Brand:** Foxwell
- **Colour:** Foxwell BT780 12v/24v Battery Tester
- **Item weight:** 1 Pounds
- **Power source:** Battery Powered
- **Style:** Thermal

## Images

![FOXWELL Car Battery 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 … - Image 1](https://m.media-amazon.com/images/I/41m0qqqVl1L.jpg)
![FOXWELL Car Battery 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 … - Image 2](https://m.media-amazon.com/images/I/516PzKQsfeL.jpg)
![FOXWELL Car Battery 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 … - Image 3](https://m.media-amazon.com/images/I/51ID+dzCdbL.jpg)
![FOXWELL Car Battery 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 … - Image 4](https://m.media-amazon.com/images/I/51JN6gFygPL.jpg)
![FOXWELL Car Battery 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 … - Image 5](https://m.media-amazon.com/images/I/51WfVRx8-uL.jpg)

## Questions & Answers

**Q: How you adjust the time and date?**
A: 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

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

**Q: How to update the software of this BT780 battery tester?**
A: 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

**Q: Is there U.S. based support?**
A: 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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***R on 16 February 2025*

Comme commander,livraison rapide.

### ⭐⭐⭐⭐⭐ Review
*by C***N on 7 April 2025*

This battery, starting, a d charging system tester is excellent. I purchased it to .ake my life easier when doing an inspection that requires this information. It comes in a nice hard carrying case. I open the case, attach the sufficiently sized alligator clips to the tester body, then attach the clips the the battery being tested. I can test only a battery outsideof a vehicle if I want to. Or I can test the battery in a vehicle, then proceed to start the vehicle in order to test the starter cranking voltage, then once running I can finish by testing the alternator and charging system. Once the tests are complete and the program has run, I can print out a receipt that states whether the battery and subsequent tests have passed or failed. It is all very intuitive and easy to use. Similar to an alignment machine it really walks you through the steps. So, this battery, starting, and charging system tester, is a winner in my book.

### ⭐⭐⭐⭐⭐ Review
*by D***L on 26 October 2023*

Like the unit, only issue is setting the date and time for the printouts. In the quick tour guide it says to hold the left, down and menu buttons simultaneously. This has no effect. Messaged Foxwell customer support 5 days ago, no word back as of yet.

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-01-25*