---
product_id: 325145156
title: "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"
brand: "foxwell"
price: "$18.43"
currency: USD
in_stock: false
url: https://www.desertcart.ec/products/325145156-foxwell-bt780-car-battery-tester-12v-24v-battery-load-analyzer
store_origin: EC
region: Ecuador
---

# 12V/24V dual voltage testing Accurate from -20°C to 60°C Built-in thermal printer included 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

**Brand:** foxwell
**Price:** $18.43
**Availability:** ❌ Out of Stock

## Summary

> 🔧 Power up your diagnostics with pro-grade precision and instant printouts!

## Quick Answers

- **What is this?** 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 by foxwell
- **How much does it cost?** $18.43 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/325145156-foxwell-bt780-car-battery-tester-12v-24v-battery-load-analyzer)

## 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

- • **Instant Printed Reports:** Print clear, professional battery health reports on the spot—no subscriptions needed.
- • **Self-Powered Independence:** Runs on internal battery for fast, reliable testing anywhere, anytime—no vehicle power required.
- • **Multi-User & Custom Reports:** Track up to 4 users with personalized shop/technician names and battery serials for flawless record-keeping.
- • **Pro-Level Battery Diagnostics:** Get precise SOH, SOC, voltage & CCA readings for cars, trucks, boats & more.
- • **Rugged & Ready for Any Environment:** Heavy-duty design with 6.5-ft leads and 99.9% accuracy in extreme weather conditions.

## Overview

The FOXWELL BT780 is a professional-grade 12V/24V car battery tester and load analyzer featuring advanced SOH/SOC diagnostics, a built-in thermal printer, and multi-user report customization. Designed for heavy-duty use across vehicles from motorcycles to heavy trucks, it delivers 99.9% accurate results in extreme temperatures and operates independently on its own internal battery for on-the-go testing without relying on vehicle power.

## Description

test 12v/24v automotive batteries

## Features

- UPGRADE TO TRUE PRO TESTING - Step up from the trusted FOXWELL BT705 car battery tester to the BT780 with 6V SOH/SOC testing, 12V/24V cranking & charging diagnostics, a built-in printer & custom shop/technician names. Powered by its own internal battery, the BT780 runs fully independent diagnostics—no reliance on vehicle power for faster, more accurate results.
- KNOW BATTERY STATUS IN ADVANCE – Never get caught with a dead battery again. The BT780 checks overall battery health, starter status, and alternator output, delivering precise reports on voltage, resistance, SOC, SOH, and charging performance. Avoid costly tows and roadside breakdowns with professional-level insight at your fingertips.
- PRINT CLEAR REPORTS AT NO EXTRA FEE – Provide customers or keep records with clear printed reports in seconds. Each includes voltage, CCA, SOC/SOH, and cranking details. Comes with 3 free rolls of 57×30 mm thermal paper, with affordable refills available online. Build trust and save money—no subscription, no extra fees.
- CUSTOM REPORTS & MULTI‑USER TRACKING – Personalize every report with shop or technician names and unique battery serial numbers. Supports up to 4 user accounts—ideal for workshops, fleet maintenance, and warranty claim documentation. Keep records organized, professional, and error-free.
- RELIABLE ACCURACY IN ANY WEATHER- While many testers fail in freezing winters or scorching summers, leaving you with unreliable readings, the FOXWELL BT780 ensures professional 99.9% accuracy from -20 °C to 60 °C. 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.
- SELF-POWERED FOR SUPERIOR RESULTS – Test deeply discharged, stored, or off-grid batteries without external power thanks to its built-in battery. Review past test history anytime for quick comparisons. A must-have for mobile mechanics, fleet managers, and technicians who need accurate results on the go.
- BUILT FOR PROFESSIONALS – Built for daily heavy-duty use, this battery and alternator tester features a 3.2″ LCD display, 6.5-ft long leads, rugged clamps, and a protective tool case. With TF card firmware updates, it ensures reliable, future-ready performance in workshops or field use.
- WIDE COVERAGE FOR MULTIPLE VEHICLES – Compatible with 100–2000 CCA Flooded, AGM Flat/Spiral, Gel, EFP, and Start-Stop AGM batteries. Serves cars, trucks, motorcycles, golf carts, RVs, boats, buses, and heavy machinery with unmatched reliability and versatility.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | foxwell |
| Part number | foxwell bt780 |
| 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 |
| Size | foxwell 12v/24v battery analyzer BT780 |
| Color | Foxwell BT780 12v/24v Battery Tester |
| Style | 6V 12V 24V Battery Tester with Printer For Car Heavy Duty Truck Buses Marine Motorcycle ATV SUV Boat Yacht Golf Carts |
| Power source type | Battery Powered |
| Voltage | 12 Volts |
| Item Package Quantity | 1 |
| Measurement Accuracy | 0.5 |
| Specification met | CE, RoHS, UL |
| Special Features | 1. Replaceable test lines |
| Included components | battery tester |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** FOXWELL
- **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
- **Colour:** Foxwell BT780 12v/24v Battery Tester
- **Item weight:** 454 g

## Images

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

## Frequently Bought Together

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-01-25*