---
product_id: 157172951
title: "FOXWELL BT780 Battery Tester with Printer 24v/12v/6v, Automotive Analyzer"
brand: "foxwell"
price: "$494.33"
currency: USD
in_stock: true
reviews_count: 13
category: "Foxwell"
url: https://www.desertcart.us/products/157172951-foxwell-bt780-battery-tester-with-printer-24v-12v-6v-automotive
store_origin: US
region: United States of America
---

# Customizable, traceable report management 6V/12V/24V multi-voltage testing Built-in jam-free thermal printer FOXWELL BT780 Battery Tester with Printer 24v/12v/6v, Automotive Analyzer

**Brand:** foxwell
**Price:** $494.33
**Availability:** ✅ In Stock

## Summary

> 🔧 Diagnose Like a Pro, Print Like a Boss!

## Quick Answers

- **What is this?** FOXWELL BT780 Battery Tester with Printer 24v/12v/6v, Automotive Analyzer by foxwell
- **How much does it cost?** $494.33 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-battery-tester-with-printer-24v-12v-6v-automotive)

## 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

- • **Triple Voltage Mastery:** Seamlessly tests 6V, 12V, and 24V batteries from 100-2000 CCA for ultimate versatility.
- • **Independent Power Boost:** Built-in battery powers the tester anytime—no reliance on weak or dead batteries, ensuring stable diagnostics.
- • **Instant On-Site Reporting:** Jam-free thermal printer delivers clear, professional reports in seconds—no apps or subscriptions needed.
- • **Pro-Level Data Management:** Supports up to 4 user profiles with customizable reports for traceable, professional service workflows.
- • **Rugged & Ready for Daily Use:** Heavy-duty clamps, reinforced 6.5 ft cables, large LCD, and protective case built for demanding professional environments.

## Overview

The FOXWELL BT780 is a flagship automotive battery tester designed for professionals and serious DIYers. It supports 6V, 12V, and 24V batteries with detailed diagnostics including voltage, internal resistance, SOC, and SOH. Featuring a built-in battery for independent power, a jam-free thermal printer for instant reports, and customizable user profiles, it streamlines battery and charging system testing across cars, trucks, marine, and heavy-duty vehicles. Rugged and reliable, it’s engineered for daily professional use, reducing downtime and costly misdiagnoses.

## Description

Buy FOXWELL BT780 Battery Tester with Printer 24v/12v/6v, Automotive 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

Review: Simple to use, detailed feedback on health of batteries. Printer makes it easier to record results - Pretty awesome tester. I use mine on my Off-Grid solar system. 6 volt AGM batteries and have 24 of them with 3 parallel of 8 in series. The tester gives good detailed data from CCA, internal resistance, voltage, state of health and state of charge. The internal printer is especially helpful considering how many batteries I test at once and not needing to write down each reading. Validated the results against my megger and results matched, I had one failed battery (cell) and 3 others nearing the end of life or "weak". I haven't used it to test an alternator since my needs are less for automotive but works great and appears to be accurate.
Review: A good tool at a good price! - The FOXWELL BT780 Car Battery Tester is so excellent for the price of $259.99. Full of the most frequently needed/desired features and it's way easy to use. Just hook its gator clips to the vehicle battery black to black, red to red and this unit gives you instructions on its screen step by step to do battery or full system tests. It's fast and it's very accurate! This unit performs like something costing $1000+ from other manufactures...and with its own 9-volt battery installed this unit a little more accurate and capable as its operation does not rely entirely on power from the car battery that it’s supposed to be testing.... The cable connector to the unit has a very tight space around it...it’s hard to fasten down the screw cap on the connector because it’s hard to get your fingertips onto it to tighten it in that small space. Also, the first time I printed the data slip it was not legible...I don't know why it did that but I did another print out days later and it came out just fine... If you need a GOOD vehicle battery/system tester this unit will do above and beyond for you, especially at this really nice price for all it does. Need one? BUY IT!!!

## Features

- 𝗨𝗽𝗴𝗿𝗮𝗱𝗲𝗱 𝗳𝗿𝗼𝗺 𝗕𝗧𝟳𝟬𝟱, 𝗙𝗟𝗔𝗚𝗦𝗛𝗜𝗣 𝟲𝗩/𝟭𝟮𝗩/𝟮𝟰𝗩 𝗕𝗔𝗧𝗧𝗘𝗥𝗬 𝗦𝗬𝗦𝗧𝗘𝗠 𝗗𝗜𝗔𝗚𝗡𝗢𝗦𝗧𝗜𝗖𝗦 - The BT780 is a flagship battery analyzer for technicians, dealerships, fleets, battery retailers, service professionals and DIYers who need fast, dependable answers. It tests 6V, 12V, and 24V batteries 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 whether the issue is from the battery, starter, or charging system before it causes unnecessary replacements, downtime, or towing costs.
- 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.
- 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.
- 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 | #67,585 in Automotive ( See Top 100 in Automotive ) #79 in Battery Testers |
| Brand | FOXWELL |
| Brand Name | FOXWELL |
| Color | Foxwell BT780 6v/12v/24v Battery Tester |
| Customer Reviews | 4.3 out of 5 stars 147 Reviews |
| Included Components | battery tester |
| 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 | 6V 12V 24V 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 6V 12V 24V 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 | 6V 12V 24V 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 12v/24v Battery Tester
- **Item Weight:** 16 ounces
- **Power Source:** Battery Powered

## Images

![FOXWELL BT780 Battery Tester with Printer 24v/12v/6v, Automotive Analyzer - Image 1](https://m.media-amazon.com/images/I/71oDymcGlOL.jpg)
![FOXWELL BT780 Battery Tester with Printer 24v/12v/6v, Automotive Analyzer - Image 2](https://m.media-amazon.com/images/I/71ebGslhAsL.jpg)
![FOXWELL BT780 Battery Tester with Printer 24v/12v/6v, Automotive Analyzer - Image 3](https://m.media-amazon.com/images/I/71REUciWtQL.jpg)
![FOXWELL BT780 Battery Tester with Printer 24v/12v/6v, Automotive Analyzer - Image 4](https://m.media-amazon.com/images/I/71M-aesPo2L.jpg)
![FOXWELL BT780 Battery Tester with Printer 24v/12v/6v, Automotive Analyzer - Image 5](https://m.media-amazon.com/images/I/81Qw1K9ViFL.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

### ⭐⭐⭐⭐⭐ Simple to use, detailed feedback on health of batteries. Printer makes it easier to record results
*by C***. on August 10, 2026*

Pretty awesome tester. I use mine on my Off-Grid solar system. 6 volt AGM batteries and have 24 of them with 3 parallel of 8 in series. The tester gives good detailed data from CCA, internal resistance, voltage, state of health and state of charge. The internal printer is especially helpful considering how many batteries I test at once and not needing to write down each reading. Validated the results against my megger and results matched, I had one failed battery (cell) and 3 others nearing the end of life or "weak". I haven't used it to test an alternator since my needs are less for automotive but works great and appears to be accurate.

### ⭐⭐⭐⭐⭐ A good tool at a good price!
*by M***E on August 7, 2025*

The FOXWELL BT780 Car Battery Tester is so excellent for the price of $259.99. Full of the most frequently needed/desired features and it's way easy to use. Just hook its gator clips to the vehicle battery black to black, red to red and this unit gives you instructions on its screen step by step to do battery or full system tests. It's fast and it's very accurate! This unit performs like something costing $1000+ from other manufactures...and with its own 9-volt battery installed this unit a little more accurate and capable as its operation does not rely entirely on power from the car battery that it’s supposed to be testing.... The cable connector to the unit has a very tight space around it...it’s hard to fasten down the screw cap on the connector because it’s hard to get your fingertips onto it to tighten it in that small space. Also, the first time I printed the data slip it was not legible...I don't know why it did that but I did another print out days later and it came out just fine... If you need a GOOD vehicle battery/system tester this unit will do above and beyond for you, especially at this really nice price for all it does. Need one? BUY IT!!!

### ⭐⭐⭐⭐ So far so good
*by F***Z on August 24, 2025*

I've tested 6 marine batteries since purchase, tester alerted to 2 OK but aging batteries and 1 that was near life end. Others tested good. Test details will allow you to "monitor" battery life status if you keep the reports/data. Documentation shows how to enter Tech name and Store name info but does not appear to save it and enter key only adds additional characters. Battery # is similar as it does not appear to save name for print out which is important when printing reports for multiple batteries. Contacted seller to see if there is a key sequence to save the info vs. entering it each time.

## Frequently Bought Together

- 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 …
- FOXWELL BT705 Car Battery Tester, 12V 24V Battery Tester 100-2000CCA Battery/Cranking/Charging Tests for Cars Motorcycles SUVs Trucks, ideal battery tester for Professionals with 2.8 inch LCD Display
- JOREST 168 Pcs Car Fuse Assorted Kit, 114 Mini Blade + 54 Standard+ 1Pullers – 11 Specifications Mixed Auto Fuse: 2Amp 3A 5A 7.5A 10A 15A 20A 25A 30A 35A 40A

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.us/products/157172951-foxwell-bt780-battery-tester-with-printer-24v-12v-6v-automotive](https://www.desertcart.us/products/157172951-foxwell-bt780-battery-tester-with-printer-24v-12v-6v-automotive)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-18*