---
product_id: 407402175
title: "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)"
brand: "foxwell"
price: "€ 562.25"
currency: EUR
in_stock: true
url: https://www.desertcart.com.cy/products/407402175-foxwell-car-battery-powered-load-tester-for-6v-12v-24v
store_origin: CY
region: Cyprus
---

# 6V/12V/24V multi-voltage testing Operates reliably -20°C to 60°C Built-in thermal printer for instant reports 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)

**Brand:** foxwell
**Price:** € 562.25
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** 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) by foxwell
- **How much does it cost?** € 562.25 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/407402175-foxwell-car-battery-powered-load-tester-for-6v-12v-24v)

## 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

- • **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.

## Overview

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.

## Description

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)

## Features

- PRO-GRADE BATTERY TESTING WITH BUILT-IN POWER & PRINTER - Take your battery analyzer to the next level with the advanced FOXWELL BT780, building upon the trusted BT705 with enhanced 6V SOH/SOC testing, precise 12V/24V cranking & charging diagnostics, and a built-in printer for on-the-spot reports. This automotive battery tester's built-in power supply provides faster, more accurate results with no reliance on vehicle power.
- CONSISTENT ACCURACY IN COLD WEATHER - While many basic testers fail in freezing winters or scorching summers, leaving you with unreliable readings, this professional car battery tester can work from -20 °C to 60 °C ensuring 99.9% accuracy. Whether you’re checking a car in a snowstorm or diagnosing an RV under the blazing sun, you’ll always get precise results—saving you stress, money, and time on the road.
- PRINT CLEAR REPORTS AT NO EXTRA FEE - Create clean, detailed, customer-ready reports in seconds using the built-in thermal printer—no app, no subscription, no additional cost. Reports include voltage, CCA, SOC/SOH, cranking time, and alternator output. Comes with 3 free rolls of 57×30 mm thermal paper, with inexpensive refills easily available online. Boost customer trust and provide documentation that tracks battery status.
- CUSTOM REPORTS & MULTI‑USER TRACKING - Personalize every report with shop name, technician ID, or battery serial numbers for clean, traceable records. Supports up to 4 user accounts—ideal for workshops, dealerships, and fleet maintenance teams that need consistent, error-free documentation. Keep every test organized, professional, and easy to audit.
- BUILT-IN BATTERY POWER FOR UNMATCHED CONVENIENCE - Unlike most battery load testers that depend on vehicle power, the BT780’s built-in battery lets you test deeply discharged, stored, or off-grid batteries independently. Perfect for mobile mechanics, fleet service trucks, RV techs, and roadside assistance professionals who need true go-anywhere reliability.
- DESIGNED FOR PROFESSIONAL USE - Built for automotive shops, fleet maintenance, and mobile technicians, the battery and alternator tester features a durable design with a 3.2″ LCD display, 6.5-ft long leads, rugged clamps, and a protective case. With TF card firmware updates, it ensures reliable, future-ready performance in workshops or field use.
- PREVENT DEAD BATTERIES & COSTLY BREAKDOWNS - Avoid unexpected failures with comprehensive diagnostics covering battery condition, starter performance, and alternator output. This battery tester with printer provides technician-trusted measurements for voltage, internal resistance, SOC, SOH, and charging efficiency—allowing you Avoid costly tows and roadside breakdowns. Perfect for shops and fleets that demand accuracy and accountability.
- WIDE COVERAGE FOR PROS AND VEHICLES - Supports 100–2000 CCA Flooded, AGM Flat/Spiral, Gel, EFB, and Start-Stop AGM batteries. Built for auto technicians, fleet managers, and battery retailers testing cars, SUVs, trucks, motorcycles, ATVs, RVs, vans, boats, buses, tractors, forklifts, generators, and heavy-duty commercial equipment. One tool covers nearly every battery you encounter.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | FOXWELL |
| Power Source | Battery Powered |
| Style | Regular |
| Colour | Black |
| Item Weight | 1 Pounds |
| Min. Operating Voltage | 6 Volts |
| Specification Met | CE |
| Measurement Type | Battery Tester |
| UPC | 712321445025 |
| Manufacturer | foxwell |
| Country of Origin | China |
| Model number | Foxwell BT780 Digital Battery Analyzer |
| Number of Memory Sticks | 1 |
| Special Feature | 1. Replaceable test lines |
| Item Weight | 454 g |
| Package Dimensions | 36.91 x 27.41 x 8.61 cm; 453.59 g |
| Item model number | Foxwell BT780 Digital Battery Analyzer |
| Display Size | 3.2 Inches |
| Voltage | 12 Volts |
| Included Components | battery tester |
| Are batteries included? | No |

## Product Details

- **Brand:** FOXWELL
- **Power Source:** Battery Powered
- **Style:** Regular
- **Colour:** Black
- **Item Weight:** 1 Pounds

## Images

![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) - Image 1](https://m.media-amazon.com/images/I/71sm-aSm4aL.jpg)
![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) - Image 2](https://m.media-amazon.com/images/I/71Dj6QkuTyL.jpg)
![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) - Image 3](https://m.media-amazon.com/images/I/71dr6xjdcYL.jpg)
![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) - Image 4](https://m.media-amazon.com/images/I/711jaeEDWnL.jpg)
![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) - Image 5](https://m.media-amazon.com/images/I/71Rg4np0UML.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

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-01-23*