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AUTOOL BT250 Car Electrical Circuit Tester 6V-30V

AUTOOL BT250 Car Electrical Circuit Tester 6V-30V

Rated 5.00 out of 5 based on 3 customer ratings

(3 customer reviews)

US$39.00

Key Features

6V-30V Testing
AC DC Modes
Short Protection

Ship From

Clear

☰ REQUEST BULK / B2B QUOTE

Secure checkoutFast supportBulk ready

AUTOOL BT250

Product Overview

The AUTOOL BT250 is an automotive electrical circuit tester for 9-30V vehicle systems. It helps technicians quickly check DC voltage, AC voltage, resistance, diode status, continuity, polarity, grounding, and common circuit conditions while providing overload protection, LED lighting, a TFT color display, and 9 language options.

9-30V Systems AC / DC Voltage Resistance / Diode Overload Protection

0-65VAC / DC Range

0-200KΩResistance Range

1.5mPower Cable

3 YearsWarranty

AUTOOL BT250 electrical system tester main product image with overload AC voltage DC voltage resistance diode and multi-language features

AUTOOL BT250 electrical system tester with 3 year warranty support

Before You Order And Use

The BT250 works directly with vehicle electrical circuits. Follow the safety instructions below before checking live circuits, engine compartments, ignition components, or vehicles that may need to run during diagnosis.

Avoid Flammable Vapors

The tester may create sparks when powered circuits are activated. Do not use it near gasoline, fuel vapor, or other flammable materials.

Wear Eye Protection

Wear safety glasses that meet ANSI standards when working around automotive electrical, fuel, or moving systems.

Ventilate The Work Area

If the vehicle must be running during testing, work in a well-ventilated area because exhaust fumes are toxic.

Secure The Vehicle

Place blocks under the wheels, engage the handbrake, and keep the vehicle in Park for automatic transmission or Neutral for manual transmission.

Watch High Voltage Areas

Use extra caution around ignition coils, distributor caps, ignition wires, and spark plugs when the engine is running.

Keep Equipment Clean

Keep the tester dry, clean, and free of oil, water, and grease. Use a clean cloth when cleaning is needed.

Detailed Safety Checklist

Keep clothing, hair, hands, tools, and test equipment away from operating or hot vehicle components.
Do not leave the vehicle unattended during testing.
Keep a fire extinguisher nearby when working around gasoline, chemicals, or electrical equipment.
Do not connect or disconnect test equipment while the ignition is on or the engine is running.
When the power switch is pressed, battery current and voltage may be conducted to ground or to a selected circuit, which can create sparks.
Use the same level of caution as you would when working with welding equipment around flammable vapors.
Use the tester within its rated range and do not force unsupported tests such as injector, relay, oscilloscope, smart test, or online update functions.

Key Features

BT250 combines common electrical test modes with a compact probe-style design, LED lighting, overload protection, and multi-language operation for daily automotive circuit diagnosis.

AC And DC Voltage Detection

DC mode detects circuit voltage values. AC mode supports voltage checks with maximum and minimum voltage, frequency, and duty cycle display for the circuit under test.

Resistance Detection

Measures resistance between the probe tip and the auxiliary ground wire, helping check circuit resistance conditions quickly.

Diode Test Mode

Quickly checks the working status of diode components and helps determine whether the diode circuit is conducting normally.

Continuity, Polarity And Grounding

Supports continuity checks, polarity identification, DC voltage detection, and grounding tests for common vehicle electrical inspection work.

Current Overload Protection

Short-circuit and current overload protection help reduce circuit damage risk. If the internal breaker trips under overload, the tester can automatically reset.

Built-In LED Light

The integrated LED light helps users complete circuit testing in dark engine compartments or low-light repair environments.

1.5m Power Cable

The 1.5m power cable is designed to cover the engine compartment for convenient system checks around the vehicle battery area.

9 Language Options

Supports English, Russian, German, Spanish, French, Italian, Portuguese, Simplified Chinese, and Polish.

Warranty And Support

AUTOOL provides 3-year warranty support for eligible non-human damage cases and lifetime maintenance support for product service needs.

AUTOOL BT250 DC voltage detection mode showing 12.0V circuit voltage

AUTOOL BT250 AC voltage mode showing maximum voltage minimum voltage frequency and duty cycle

AUTOOL BT250 resistance detection mode showing resistance check through the probe and auxiliary ground wire

AUTOOL BT250 diode test mode showing diode continuity status

AUTOOL BT250 LED light for circuit testing in dark environments

AUTOOL BT250 current overload protection feature image

AUTOOL BT250 1.5m power cable covering the engine compartment

AUTOOL BT250 9 language options including English Russian German Spanish French Italian Portuguese Chinese and Polish

Specifications

BT250 Electrical System Tester Specifications

Use the specification table to confirm the supported voltage range, resistance range, current range, display, cable length, test functions, and unsupported advanced functions before ordering.

Core Specifications
Product	AUTOOL BT250 Automotive Electrical System Tester
Operation Voltage	9-30V automotive systems
DC Voltage Measurement Range	0-65V
AC Voltage Measurement Range	0-65V
Resistance Measurement Range	0-200KΩ
Current Measuring Range	0-10A
Rated Current	1-10A
Power Cable Length	1.5m
Screen Size	160×128dpi
Display	TFT color display
Product Size Reference	253mm height × 32mm width; 42mm probe tip
Supported Functions
DC Voltage Detection Mode	Supported
AC Voltage Detection Mode	Supported
Resistance Detection Mode	Supported
Diode Test Mode	Supported
Grounding Test	Supported
Polarity Test	Supported
Continuity Test	Supported
Current Overload Protection	Supported
LED Light	Supported
Languages	9 languages: English, Russian, German, Spanish, French, Italian, Portuguese, Simplified Chinese, and Polish
Not Supported On BT250
Temperature Test	Not supported
Injector Test	Not supported
Relay Test	Not supported
0-5V Power Supply	Not supported
Component Activation	Not supported
Oscilloscope Mode	Not supported
Multimeter Mode	Not supported
Smart Test	Not supported
Online Update	Not supported
Body And Interface
Main Parts	Probe tip, LED light, clamps, LCD display, power switch, auxiliary ground clamp, mode button, sound/radiator area, and power cable

AUTOOL BT250 specifications and product structure showing voltage range resistance range rated current probe tip LCD display clamps auxiliary ground clamp and power cable

Core Specifications

ProductAUTOOL BT250 Automotive Electrical System Tester

Operation Voltage9-30V automotive systems

DC Voltage Measurement Range0-65V

AC Voltage Measurement Range0-65V

Resistance Measurement Range0-200KΩ

Current Measuring Range0-10A

Rated Current1-10A

Power Cable Length1.5m

Screen Size160×128dpi

DisplayTFT color display

Product Size Reference253mm height × 32mm width; 42mm probe tip

Supported Functions

DC Voltage Detection ModeSupported

AC Voltage Detection ModeSupported

Resistance Detection ModeSupported

Diode Test ModeSupported

Grounding TestSupported

Polarity TestSupported

Continuity TestSupported

Current Overload ProtectionSupported

LED LightSupported

Languages9 languages: English, Russian, German, Spanish, French, Italian, Portuguese, Simplified Chinese, and Polish

Not Supported On BT250

Temperature TestNot supported

Injector TestNot supported

Relay TestNot supported

0-5V Power SupplyNot supported

Component ActivationNot supported

Oscilloscope ModeNot supported

Multimeter ModeNot supported

Smart TestNot supported

Online UpdateNot supported

Body And Interface

Main PartsProbe tip, LED light, clamps, LCD display, power switch, auxiliary ground clamp, mode button, sound/radiator area, and power cable

Product Comparison

Compare BT250 with other AUTOOL BT series circuit testers before choosing the right voltage range, cable length, display, resistance test, diode test, and advanced diagnostic functions.

BT250 FocusBalanced 9-30V model with 0-65V AC/DC voltage measurement, 0-200KΩ resistance test, 0-10A current measuring range, diode test, grounding test, polarity test, continuity test, TFT color display, LED light, 1.5m cable, and 9 languages.

BT160Entry 6-24V tester with a 4m power cable and basic circuit checks, but without TFT color display, resistance detection, LED light, or multiple languages.

BT2109-30V tester with temperature test and LED light, but without resistance measurement, diode test mode, grounding test, TFT color display, or multi-language support.

BT260Similar core capability to BT250, with 9-30V operation, 0-65V AC/DC voltage, 0-200KΩ resistance, 9 languages, and a longer 12m power cable.

BT280High-end option with 0.1-100V voltage range, 0-18A current range, 6m cable, 14 languages, 320×240dpi display, injector test, 0-5V power supply, relay test, component activation, oscilloscope, multimeter, smart test, and online update.

Decision CheckChoose BT250 if you need a compact, cost-effective tester with resistance, diode, grounding, polarity, continuity, AC/DC voltage, TFT display, and 9 languages, but do not need BT280-level advanced functions.

AUTOOL BT160 BT210 BT250 BT260 and BT280 automotive circuit tester comparison chart

AUTOOL BT250 / BT260 User Manual

Open the PDF manual for BT250 and BT260 electrical system tester use, operation modes, and safety guidance.

Download Manual

Need Setup Or Model Confirmation?

Contact AUTOOL Store before ordering if you need to confirm BT250 voltage range, cable length, supported test modes, BT250 vs BT260 differences, BT250 vs BT280 differences, or package contents.

Emailsupport@autoolstore.com WhatsApp+86 189 2647 7404

AUTOOL BT250 packing list showing main tester battery clamps auxiliary ground clamp power cable user manual and retail box

What Is In The Box

The package image shows the BT250 main tester, battery clamps, auxiliary ground clamp, power cable, user manual, and retail box. Refer to the package image for the final included accessories.

Main UnitAUTOOL BT250 electrical system tester

Battery ClampsPositive and negative battery clamps shown in the package image

Auxiliary Ground ClampAuxiliary ground clamp attached to the tester

Power CableIntegrated 1.5m power cable

DocumentationBT250 / BT260 user manual

Retail BoxAUTOOL BT250 package box

Questions And Answers

These answers cover BT250 voltage range, supported test modes, overload protection, language options, model differences, package contents, safety notes, and warranty support.

What Vehicle Voltage Range Does BT250 Support?

What Can AUTOOL BT250 Test?

Does BT250 Support Injector Test, Relay Test, Or Oscilloscope Mode?

What Is The Difference Between BT250 And BT260?

What Is The Difference Between BT250 And BT280?

How Does The Overload Protection Work?

Which Languages Does BT250 Support?

Can I Connect Or Disconnect The Tester While The Ignition Is On?

What Accessories Are Included In The Package?

How Long Is The Warranty?

Warranty And Contact

For BT250 voltage range confirmation, supported test modes, BT250 vs BT260 or BT280 selection, packing list confirmation, manual download, safety guidance, warranty, or troubleshooting, contact AUTOOL Store directly.

Pre-Sales And Product Support

Use support if you need help confirming whether BT250 is suitable for your circuit testing needs, which BT series model to choose, how to read the manual, or which functions are not supported by BT250.

3-year warranty support for eligible non-human damage cases
Lifetime maintenance support
Voltage range and supported test mode confirmation
BT250 / BT260 / BT280 model selection
Packing List and accessory confirmation
Manual download and safety-use guidance
Support response as soon as possible, usually within 24 hours

Email Supportsupport@autoolstore.com WhatsApp Support+86 189 2647 7404

Customer Reviews

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Automotive Repair & Testing Equipment

Automotive Repair & Maintenance Equipment

Carbon Deposit Cleaning Equipment

Wheel and Tire Repair Equipment

Workshop Tool Storage Series

Electric Vehicle Charger Series

OBD Diagnostic Tools

Accessories

AUTOOL BT250 Car Electrical Circuit Tester 6V-30V

Product Overview

Before You Order And Use

Avoid Flammable Vapors

Wear Eye Protection

Ventilate The Work Area

Secure The Vehicle

Watch High Voltage Areas

Keep Equipment Clean

Detailed Safety Checklist

Key Features

AC And DC Voltage Detection

Resistance Detection

Diode Test Mode

Continuity, Polarity And Grounding

Current Overload Protection

Built-In LED Light

1.5m Power Cable

9 Language Options

Warranty And Support

BT250 Electrical System Tester Specifications

Product Comparison

Related Products

AUTOOL BT210 Car Circuit Tester 9-30V Electrical Testers

AUTOOL BT160 Automotive Circuit Tester Circuit Checker