---
product_id: 157172951
title: "FOXWELL BT780 Car Battery Tester w/Printer 24v 12v, Alternator Analyzer"
brand: "foxwell"
price: "$525.78"
currency: USD
in_stock: true
category: "Foxwell"
url: https://www.desertcart.us/products/157172951-foxwell-bt780-car-battery-tester-w-printer-24v-12v-alternator
store_origin: US
region: United States of America
---

# 100-2000 CCA range Built-in battery power Jam-free thermal printer FOXWELL BT780 Car Battery Tester w/Printer 24v 12v, Alternator Analyzer

**Brand:** foxwell
**Price:** $525.78
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** FOXWELL BT780 Car Battery Tester w/Printer 24v 12v, Alternator Analyzer by foxwell
- **How much does it cost?** $525.78 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/157172951-foxwell-bt780-car-battery-tester-w-printer-24v-12v-alternator)

## 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

- • **Independent Power Source:** Built-in battery lets you test anytime, even on weak or dead batteries without interference.
- • **Instant, Jam-Free Printing:** Print clear, professional reports on-site—no apps, Bluetooth, or subscriptions needed.
- • **Rugged, Professional Design:** 6.5 ft reinforced cables, large LCD, heavy-duty clamps & protective case built for daily pro use.
- • **Customizable Multi-User Reports:** Supports 4 user profiles with traceable, branded reports for streamlined service management.
- • **Comprehensive Battery Diagnostics:** Test voltage, internal resistance, SOC & SOH across 12V/24V systems for precise insights.

## Overview

The FOXWELL BT780 is a professional-grade car battery tester and alternator analyzer supporting 12V and 24V systems with a wide 100-2000 CCA range. Featuring jam-free thermal printing, a built-in battery for independent power, and customizable multi-user report management, it’s designed for technicians, dealerships, fleets, and savvy DIYers who demand fast, reliable diagnostics and clear, on-the-spot reporting.

## Description

Buy FOXWELL BT780 Car Battery Tester w/Printer 24v 12v, Alternator Analyzer | Upgraded of BT705, 100-2000CCA Car Battery SOC SOH Cranking Starter Charging System Alternator Tester for Marine Heavy Duty: Battery Testers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- 𝗨𝗽𝗴𝗿𝗮𝗱𝗲𝗱 𝗳𝗿𝗼𝗺 𝗕𝗧𝟳𝟬𝟱, 𝗙𝘂𝗹𝗹 𝗕𝗔𝗧𝗧𝗘𝗥𝗬 𝗦𝗬𝗦𝗧𝗘𝗠 𝗗𝗜𝗔𝗚𝗡𝗢𝗦𝗧𝗜𝗖𝗦 - The FOXWELL BT780 builds on the trusted BT705 with expanded features: Professional battery test with printer and internal battery. It's designed for technicians, dealerships, fleets, battery retailers, service professionals and DIYers who need fast, dependable answers. Testing from 100-2000 CCA with readings for voltage, internal resistance, SOC, and SOH. It also performs 12V/24V cranking and charging system tests to help identify the issue before it causes unnecessary replacements, downtime, or towing costs. NOTE: Not support deep cycle batteries
- 𝗣𝗥𝗢-𝗚𝗥𝗔𝗗𝗘 𝗝𝗔𝗠-𝗙𝗥𝗘𝗘 𝗣𝗥𝗜𝗡𝗧𝗜𝗡𝗚 𝗙𝗢𝗥 𝗖𝗟𝗘𝗔𝗥𝗘𝗥 𝗥𝗘𝗣𝗔𝗜𝗥 𝗗𝗘𝗖𝗜𝗦𝗜𝗢𝗡𝗦 - The BT780 battery tester with printer delivers smooth, fast, jam-free thermal printing in seconds. No apps, no Bluetooth pairing, and no subscription fees required. Professionals can print clear reports for customers on the spot, while DIYers and car owners can test at home, keep a printed record, and bring results to a repair shop to better understand battery issues before approving repairs or replacements. Includes 3 rolls of thermal paper for ready-to-use convenience.
- 𝗕𝗨𝗜𝗟𝗧-𝗜𝗡 𝗕𝗔𝗧𝗧𝗘𝗥𝗬 𝗣𝗢𝗪𝗘𝗥 𝗙𝗢𝗥 𝗔𝗡𝗬𝗧𝗜𝗠𝗘 𝗔𝗖𝗖𝗘𝗦𝗦 - Unlike basic testers that draw power from the battery under test, the FOXWELL BT780 battery tester has a built-in battery, letting you power on anytime without connecting to the tested battery. Review saved results, check battery records, or print reports wherever the job takes you. This independent power design also supports more stable diagnostics on weak, discharged, or low-voltage batteries, reducing interference that may affect basic testers and improving testing efficiency.
- 𝗖𝗨𝗦𝗧𝗢𝗠𝗜𝗭𝗔𝗕𝗟𝗘 & 𝗧𝗥𝗔𝗖𝗘𝗔𝗕𝗟𝗘 𝗥𝗘𝗣𝗢𝗥𝗧 𝗠𝗔𝗡𝗔𝗚𝗘𝗠𝗘𝗡𝗧 - Designed for professional service environments, the BT780 car battery tester supports up to 4 user profiles and customizable report details, including shop name, technician ID, and battery serial number. Data playback lets you quickly review previous test results for follow-up checks, customer records, and battery condition tracking. Every test becomes more traceable, professional, and easier to manage across multiple customers, vehicles, or service teams.
- 𝗕𝗨𝗜𝗟𝗧 𝗙𝗢𝗥 𝗗𝗔𝗜𝗟𝗬 𝗣𝗥𝗢𝗙𝗘𝗦𝗦𝗜𝗢𝗡𝗔𝗟 𝗪𝗢𝗥𝗞 - Made for serious day-to-day use, the BT780 features 6.5 ft reinforced cables for easier solo in-vehicle testing, a large 3.2-inch clear LCD for quick reading, heavy-duty clamps for stable contact, and a protective hard carrying case for organized storage and transport. Built for repair shops, mobile technicians, dealerships, fleets, battery professionals car owners and DIYers, it helps make daily battery service faster, easier, and more dependable.
- 𝗪𝗜𝗗𝗘 𝗕𝗔𝗧𝗧𝗘𝗥𝗬 𝗖𝗢𝗩𝗘𝗥𝗔𝗚𝗘 𝗙𝗢𝗥 𝗠𝗢𝗥𝗘 𝗦𝗘𝗥𝗩𝗜𝗖𝗘 𝗦𝗖𝗘𝗡𝗔𝗥𝗜𝗢𝗦 - The BT780 battery tester with printer supports 100-2000 CCA Flooded, AGM Flat/Spiral, EFB, Gel, and Start-Stop AGM batteries used in cars, trucks, RVs, motorcycles, marine equipment, generators, and commercial fleets. One professional battery analyzer covers more battery types and job scenarios, helping reduce tool clutter, improve efficiency, and deliver better long-term value.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07XFHGZ3N |
| Best Sellers Rank | #338,106 in Automotive ( See Top 100 in Automotive ) #239 in Battery Testers |
| Brand | FOXWELL |
| Brand Name | FOXWELL |
| Color | Foxwell BT780 6v/12v/24v Battery Tester |
| Customer Reviews | 4.2 out of 5 stars 148 Reviews |
| Included Components | battery tester |
| Item Highlight | Upgraded of BT705, 100-2000CCA Car Battery SOC SOH Cranking Starter Charging System Alternator Tester for Marine Heavy Duty |
| Item Weight | 16 ounces |
| Manufacturer | foxwell |
| Measurement Type | Battery Tester |
| Min. Operating Voltage | 5 volts |
| Minimum Operating Voltage | 5 volts |
| Model | Foxwell BT780 Digital Battery Analyzer |
| Number of Items | 1 |
| Part Number | foxwell bt780 |
| Power Source | Battery Powered |
| Style | car Battery Tester with Printer For Car Heavy Duty Truck Buses Marine Motorcycle ATV SUV Boat Yacht Golf Carts, ideal for repair shops, mechanicians, dealerships, battery retailers and DIYers Style car Battery Tester with Printer For Car Heavy Duty Truck Buses Marine Motorcycle ATV SUV Boat Yacht Golf Carts, ideal for repair shops, mechanicians, dealerships, battery retailers and DIYers See more |
| Style Name | car Battery Tester with Printer For Car Heavy Duty Truck Buses Marine Motorcycle ATV SUV Boat Yacht Golf Carts, ideal for repair shops, mechanicians, dealerships, battery retailers and DIYers |
| UPC | 712321445025 |
| Upper Temperature Rating | 60 °C |

## Product Details

- **Brand:** FOXWELL
- **Color:** Foxwell BT780 6v/12v/24v Battery Tester
- **Item Weight:** 16 ounces
- **Power Source:** Battery Powered

## Images

![FOXWELL BT780 Car Battery Tester w/Printer 24v 12v, Alternator Analyzer - Image 1](https://m.media-amazon.com/images/I/71oDymcGlOL.jpg)
![FOXWELL BT780 Car Battery Tester w/Printer 24v 12v, Alternator Analyzer - Image 2](https://m.media-amazon.com/images/I/71REUciWtQL.jpg)
![FOXWELL BT780 Car Battery Tester w/Printer 24v 12v, Alternator Analyzer - Image 3](https://m.media-amazon.com/images/I/71M-aesPo2L.jpg)
![FOXWELL BT780 Car Battery Tester w/Printer 24v 12v, Alternator Analyzer - Image 4](https://m.media-amazon.com/images/I/71Rg4np0UML.jpg)
![FOXWELL BT780 Car Battery Tester w/Printer 24v 12v, Alternator Analyzer - Image 5](https://m.media-amazon.com/images/I/71ebGslhAsL.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

## Frequently Bought Together

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-09-09*