6-30V Power Circuit Probe Tester Voltage Resistance Diode Electrical System Test

Brand: AUTOOL Sold By: TopSelected
$128.44 In Stock
Ships from United States Arrives in 7-14 business days

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August2026
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August2026
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6-30V Power Circuit Probe Tester Voltage Resistance Diode Electrical System Test

6-30V Power Circuit Probe Tester Voltage Resist...

$128.44

Product Details




AUTOOL BT250 Car Electric Circuit Tester is suitable for diagnostic in all 6V to 30V vehicle electrical systems. With a simple hook-up of the tool to the vehicle's battery, AC voltage detection, DC voltage detection, Resistance Detection, Diode Test, and Current overload protection will be available to test.


Features:
➤ 1.【Easy-to-use and Multifunctional Circuit Tester】The main functions of this electrical tester: voltage and polarity testing, continuity testing, signal circuit testing, activating components in your hand, activating components in the vehicle, activating components w/ground, checking for poor ground contacts, following and locating short circuits. This power circuit probe tester is ideal for diagnosing all 6V to 30V vehicle electrical systems.
➤ 2.【Electrical Tester with 4 Working Modes】DC Voltage: The power circuit probe tester will read DC voltage with 0.1 volt resolution. AC Voltage: The LCD display of the circuit tester will read the maximum and minimum voltage, frequency and duty cycle. Resistance: The tester will read the resistance between the tip and the auxiliary ground lead. Diode Mode: quickly test the operation of the diode assembly and determine if it is conducting.
➤ 3.【Self-test & Circuit Breaker Protection & 7 Languages】Before using the automotive circuit tester, the quick self-check function of the tester can ensure that the tester is in good condition. The tool is short circuit protected and its internal circuit breaker will trip if overloaded. The circuit breaker is a valuable test tool as well as a safety measure to protect the tool from Overload. The automotive tool supports 7 languages: English, German, Spanish, French, Italian, Russian, Portuguese.
➤ 4.【1.5m Test Lead & TFT Color Display & LED Light】The power circuit probe tester features a high-definition TFT color display with high resolution, allowing you to view data clearly and comfortably. The circuit breaker finder has two LED lights to work easily even in dark or low light conditions. Conduct positive or negative battery current to the probe tip by pressing the power switch of the tester to test the functionality of electrical components without the use of jumper wires.
➤ 5.【Portable and Quick Test Circuit Tester】With this car circuit tester tool, you can determine at a glance whether a circuit is positive, negative, or open without having to reconnect the clips from one battery pole to another; Test for continuity with its built-in auxiliary ground lead; Test for poor ground contacts instantly without performing voltage drop tests; Follow and locate short circuits without wasting fuses.
➤ 6.【POWER SUPPLY】The automotive power circuit probe tester is powered via the vehicle battery. Connect the RED battery clamp to the POSITIVE terminal of the vehicle’s battery, and the BLACK clamp to the NEGATIVE terminal. When the power circuit probe tester is first connected to a battery (power source), the car electrical tester will sound a beep and the headlights will be on to illuminate the test area of the probe tip.
➤ 7.【3-Year Warranty】We offer a free 36-month warranty on this circuit tester kit to ensure your shopping experience. If you have any questions about this tester tool, please feel free to contact us.


1.5M Power Cable——Can cover the entire engine compartment, enabling easy inspection of the car's electrical system.
Bright LED lights——Work easily even in dark or low light conditions.
TFT Color Display——Allows you to view data clearly and comfortably.


• Portable and quick test
Works on all 6-30V vehicle electrical systems.


Checking for Poor Ground Contacts
Probe the suspected ground wire or contact with the probe tip. If the circuit breaker tripped, this circuit is more than likely a good ground.


Activating Components
Activating components in your hand, activating components in the vehicle, activating components w/ground.


Checking for Poor Ground Contacts
Probe the suspected ground wire or contact with the probe tip. If the circuit breaker tripped, this circuit is more than likely a good ground.


Following and Locating Short Circuits
Remove the blown fuse from the fuse box. Use the probe tip to activate and energize each of the fuse contacts. The contact which trips the circuit breaker is the shorted circuit.

DC Voltage
Used to detect the
voltage value of the circuit under test
AC Voltage 
Used to detect the maximum minimum yoltage
value, power frequency and duty cycle of the
circuit.
Resistance Mode
In this mode, the L CD display will read the
resistance between the tip and auxiliary ground
lead.

Diode Mode
Quickly test the working condition of diode
components and determine open circuits and
continuity.
Current Overload Protection
Mehrsprachig
Unterstützt 7 Sprachen: Englisch, Russisch, Deutsch, Portugiesisch, Französisch, Italienisch, Spanisch



Specification
Display: TFT color display (160 x 128 dpi)
Operating Temperature: 0 to 60°C (32 to 140 F°)
Storage Temperature: -40 to 70°C (-40 to 185 F°)
External Power: 12or 24V power provided via vehicle battery
Dimensions: 126 mm (4.96”)x46.5 mm (1.83”)x35 mm (1.38”) L*W*H
NW: 0.105kg (0.23lb)
Package Included
1x AUTOOL BT250 Car Electric Circuit Tester main unit;1x User’s Manual.;1x Battery clamps;1x Probe tip;1x 1.5m extension cable.



PushAuction

Shipping Overview: 

Shipping: Standard Domestic Shipping within the United States charges first item USD 6.99 and additional item USD 3.0 each. Standard International Shipping from United Kingdom, Germany, Italian and Japan to the United States charges first item USD 11.99 and additional item USD 4.0 each.

Import Duty: Everymarket collects applicable duties and taxes on goods imported into the U.S. at checkout, it's calculated based on the goods value multiply by the rate. For United Kingdom and China goods is 10%, Germany, Italian and Japan goods is 15%. We are committed to making your U.S. shopping experience simple and transparent. The method of delivery—either Delivered Duty Paid (DDP) or Delivered Duty Unpaid (DDU)—depends on whether duties and taxes are collected at the time of your purchase.

Order Processing: Please allow 1-2 business days for order processing and preparation before shipment. 

Domestic Shipping: Orders within the U.S. are shipped via USPS or FedEx, depending on the origin of the product. Average transit times to the United States is 3 - 7 Business days and average transit times to International is 7 - 14 Business days 

International Shipping: Currently, we only ship within the USA. 

Tracking Information: Every order is trackable. You will receive a tracking number once your order has been shipped. Products may be shipped from various global fulfillment centers.

Shipping Delays: 

Please note that shipping times may vary due to factors beyond our control, such as weather conditions, natural disasters, or peak holiday periods. While we strive to ensure timely delivery, the exact arrival time cannot be guaranteed and is managed by the shipping carrier.

Shipping Options:

  • Standard Delivery: Most orders are shipped within 3-7 business days. Larger items may utilize LTL shipping for safe handling.

  • Handling Time: We handle shipments on business days (Monday - Friday), with a preparation time of 1-2 days.

  • Additional Charges: Some items require additional shipping charges due to their size, weight, or special handling. These charges are specified on the product pages and are not eligible for shipping discounts.

  • Exclusions: Gift cards, packaging, taxes, and prior purchases do not count toward the minimum purchase requirement for free shipping. This offer is valid only for shipments to U.S. addresses, including Puerto Rico.

Delivery Details:

  • Estimates: Standard shipping within the US typically takes 3-7 business days. These are estimates and not guarantees.

  • Shipping Restrictions: We ship to all 50 states, Washington, DC, U.S. territories, and APO/FPO/DPO addresses. Shipping options vary based on the delivery address.

  • Remote Areas: Shipments to remote areas may incur additional charges or require pickup from a nearby shipping partner’s location.

Shipping Confirmation:

You will receive a shipping confirmation email with a tracking number as soon as your order is dispatched. If you do not receive this email immediately, please be assured that your items will arrive within the estimated delivery window provided at checkout.

Order Modifications:

If you need to cancel or modify your order, please contact our customer support immediately.

Issues with Delivery:

If your order shows as delivered but you have not received it, please contact the shipping carrier directly to resolve the issue. For persistent problems, contact our customer service at cs@everymarket.com.

Customer Support:

Our team is available 24/7 to assist you with any questions or concerns regarding your order. We are committed to ensuring a smooth shopping experience.

Return & Refund Policy Overview

Please review our return and refund policies below to ensure a smooth transaction process.

Return Policy

  • Duration: You have 30 days from receiving your item to initiate a return.

  • Condition: Items must be unworn, unwashed, with original tags and packaging intact.

  • Shipping Costs:
    - If your return is approved due to a defective, damaged, or incorrect item, we will provide a prepaid return shipping label at no cost.

    - If the item has no quality issues and matches the product listing and description, please contact our Customer Service team before returning it. Once your return is authorized, you must return the item according to the provided instructions. In this case, the return shipping cost is the customer's responsibility.

    - We are not responsible for return shipping costs for items returned without prior authorization.

  • Packaging: Ensure returned items are well-packaged to avoid damage during transit.

  • Tracking: Use a trackable and insured shipping method as we are not liable for items lost or damaged on return.

  • Initiating a Return: Contact us at cs@everymarket.com to start your return. We will provide a return shipping label and instructions upon approval. Returns without prior approval will not be accepted.

How to Return

  • Method: Returns must be sent back by mail to the address provided in the return instructions.

Return Label

  • Please contact us to get return labels.

Product Conditions for Return

  • Eligible Products: Returns are only accepted for items in new condition.

Nonreturnable Items

Certain items are not eligible for return:

  • Electronic devices after 30 days (e.g., computers, laptops, Kindles)

  • Gift cards, prepaid game cards

  • Perishable goods, live insects, some jewelry, some health and personal care items

  • Customized or personalized products

  • Items with special shipping restrictions

Refund Policy

  • Window: Eligible products may be returned within 30 days of delivery for a refund.

  • Refund Method: Refunds are processed to the original payment method or as store credit for items purchased with gift cards.

  • Processing Time: Refunds are processed within 3-5 business days after we receive the return; please allow additional time for shipping and bank processing.

Claims

Inspect your order upon arrival and report any defects, damages, or incorrect items immediately to allow us to address the issue. For claims, contact our support team with details of the issue.

Exchange Policy

For the quickest service, return your original item and place a new order for the desired product once your return is accepted.

Return Address

EveryMarket Customer Service 2101 E Terra Ln, O'Fallon, MO 63366

Customer Support

Available 24/7 for any questions or assistance needed:

  • Phone: +1 (800) 660-3783

  • Email: cs@everymarket.com

 





AUTOOL BT250 Car Electric Circuit Tester is suitable for diagnostic in all 6V to 30V vehicle electrical systems. With a simple hook-up of the tool to the vehicle's battery, AC voltage detection, DC voltage detection, Resistance Detection, Diode Test, and Current overload protection will be available to test.


Features:
➤ 1.【Easy-to-use and Multifunctional Circuit Tester】The main functions of this electrical tester: voltage and polarity testing, continuity testing, signal circuit testing, activating components in your hand, activating components in the vehicle, activating components w/ground, checking for poor ground contacts, following and locating short circuits. This power circuit probe tester is ideal for diagnosing all 6V to 30V vehicle electrical systems.
➤ 2.【Electrical Tester with 4 Working Modes】DC Voltage: The power circuit probe tester will read DC voltage with 0.1 volt resolution. AC Voltage: The LCD display of the circuit tester will read the maximum and minimum voltage, frequency and duty cycle. Resistance: The tester will read the resistance between the tip and the auxiliary ground lead. Diode Mode: quickly test the operation of the diode assembly and determine if it is conducting.
➤ 3.【Self-test & Circuit Breaker Protection & 7 Languages】Before using the automotive circuit tester, the quick self-check function of the tester can ensure that the tester is in good condition. The tool is short circuit protected and its internal circuit breaker will trip if overloaded. The circuit breaker is a valuable test tool as well as a safety measure to protect the tool from Overload. The automotive tool supports 7 languages: English, German, Spanish, French, Italian, Russian, Portuguese.
➤ 4.【1.5m Test Lead & TFT Color Display & LED Light】The power circuit probe tester features a high-definition TFT color display with high resolution, allowing you to view data clearly and comfortably. The circuit breaker finder has two LED lights to work easily even in dark or low light conditions. Conduct positive or negative battery current to the probe tip by pressing the power switch of the tester to test the functionality of electrical components without the use of jumper wires.
➤ 5.【Portable and Quick Test Circuit Tester】With this car circuit tester tool, you can determine at a glance whether a circuit is positive, negative, or open without having to reconnect the clips from one battery pole to another; Test for continuity with its built-in auxiliary ground lead; Test for poor ground contacts instantly without performing voltage drop tests; Follow and locate short circuits without wasting fuses.
➤ 6.【POWER SUPPLY】The automotive power circuit probe tester is powered via the vehicle battery. Connect the RED battery clamp to the POSITIVE terminal of the vehicle’s battery, and the BLACK clamp to the NEGATIVE terminal. When the power circuit probe tester is first connected to a battery (power source), the car electrical tester will sound a beep and the headlights will be on to illuminate the test area of the probe tip.
➤ 7.【3-Year Warranty】We offer a free 36-month warranty on this circuit tester kit to ensure your shopping experience. If you have any questions about this tester tool, please feel free to contact us.


1.5M Power Cable——Can cover the entire engine compartment, enabling easy inspection of the car's electrical system.
Bright LED lights——Work easily even in dark or low light conditions.
TFT Color Display——Allows you to view data clearly and comfortably.


• Portable and quick test
Works on all 6-30V vehicle electrical systems.


Checking for Poor Ground Contacts
Probe the suspected ground wire or contact with the probe tip. If the circuit breaker tripped, this circuit is more than likely a good ground.


Activating Components
Activating components in your hand, activating components in the vehicle, activating components w/ground.


Checking for Poor Ground Contacts
Probe the suspected ground wire or contact with the probe tip. If the circuit breaker tripped, this circuit is more than likely a good ground.


Following and Locating Short Circuits
Remove the blown fuse from the fuse box. Use the probe tip to activate and energize each of the fuse contacts. The contact which trips the circuit breaker is the shorted circuit.

DC Voltage
Used to detect the
voltage value of the circuit under test
AC Voltage 
Used to detect the maximum minimum yoltage
value, power frequency and duty cycle of the
circuit.
Resistance Mode
In this mode, the L CD display will read the
resistance between the tip and auxiliary ground
lead.

Diode Mode
Quickly test the working condition of diode
components and determine open circuits and
continuity.
Current Overload Protection
Mehrsprachig
Unterstützt 7 Sprachen: Englisch, Russisch, Deutsch, Portugiesisch, Französisch, Italienisch, Spanisch



Specification
Display: TFT color display (160 x 128 dpi)
Operating Temperature: 0 to 60°C (32 to 140 F°)
Storage Temperature: -40 to 70°C (-40 to 185 F°)
External Power: 12or 24V power provided via vehicle battery
Dimensions: 126 mm (4.96”)x46.5 mm (1.83”)x35 mm (1.38”) L*W*H
NW: 0.105kg (0.23lb)
Package Included
1x AUTOOL BT250 Car Electric Circuit Tester main unit;1x User’s Manual.;1x Battery clamps;1x Probe tip;1x 1.5m extension cable.



PushAuction

Shipping Overview: 

Shipping: Standard Domestic Shipping within the United States charges first item USD 6.99 and additional item USD 3.0 each. Standard International Shipping from United Kingdom, Germany, Italian and Japan to the United States charges first item USD 11.99 and additional item USD 4.0 each.

Import Duty: Everymarket collects applicable duties and taxes on goods imported into the U.S. at checkout, it's calculated based on the goods value multiply by the rate. For United Kingdom and China goods is 10%, Germany, Italian and Japan goods is 15%. We are committed to making your U.S. shopping experience simple and transparent. The method of delivery—either Delivered Duty Paid (DDP) or Delivered Duty Unpaid (DDU)—depends on whether duties and taxes are collected at the time of your purchase.

Order Processing: Please allow 1-2 business days for order processing and preparation before shipment. 

Domestic Shipping: Orders within the U.S. are shipped via USPS or FedEx, depending on the origin of the product. Average transit times to the United States is 3 - 7 Business days and average transit times to International is 7 - 14 Business days 

International Shipping: Currently, we only ship within the USA. 

Tracking Information: Every order is trackable. You will receive a tracking number once your order has been shipped. Products may be shipped from various global fulfillment centers.

Shipping Delays: 

Please note that shipping times may vary due to factors beyond our control, such as weather conditions, natural disasters, or peak holiday periods. While we strive to ensure timely delivery, the exact arrival time cannot be guaranteed and is managed by the shipping carrier.

Shipping Options:

  • Standard Delivery: Most orders are shipped within 3-7 business days. Larger items may utilize LTL shipping for safe handling.

  • Handling Time: We handle shipments on business days (Monday - Friday), with a preparation time of 1-2 days.

  • Additional Charges: Some items require additional shipping charges due to their size, weight, or special handling. These charges are specified on the product pages and are not eligible for shipping discounts.

  • Exclusions: Gift cards, packaging, taxes, and prior purchases do not count toward the minimum purchase requirement for free shipping. This offer is valid only for shipments to U.S. addresses, including Puerto Rico.

Delivery Details:

  • Estimates: Standard shipping within the US typically takes 3-7 business days. These are estimates and not guarantees.

  • Shipping Restrictions: We ship to all 50 states, Washington, DC, U.S. territories, and APO/FPO/DPO addresses. Shipping options vary based on the delivery address.

  • Remote Areas: Shipments to remote areas may incur additional charges or require pickup from a nearby shipping partner’s location.

Shipping Confirmation:

You will receive a shipping confirmation email with a tracking number as soon as your order is dispatched. If you do not receive this email immediately, please be assured that your items will arrive within the estimated delivery window provided at checkout.

Order Modifications:

If you need to cancel or modify your order, please contact our customer support immediately.

Issues with Delivery:

If your order shows as delivered but you have not received it, please contact the shipping carrier directly to resolve the issue. For persistent problems, contact our customer service at cs@everymarket.com.

Customer Support:

Our team is available 24/7 to assist you with any questions or concerns regarding your order. We are committed to ensuring a smooth shopping experience.

Return & Refund Policy Overview

Please review our return and refund policies below to ensure a smooth transaction process.

Return Policy

  • Duration: You have 30 days from receiving your item to initiate a return.

  • Condition: Items must be unworn, unwashed, with original tags and packaging intact.

  • Shipping Costs:
    - If your return is approved due to a defective, damaged, or incorrect item, we will provide a prepaid return shipping label at no cost.

    - If the item has no quality issues and matches the product listing and description, please contact our Customer Service team before returning it. Once your return is authorized, you must return the item according to the provided instructions. In this case, the return shipping cost is the customer's responsibility.

    - We are not responsible for return shipping costs for items returned without prior authorization.

  • Packaging: Ensure returned items are well-packaged to avoid damage during transit.

  • Tracking: Use a trackable and insured shipping method as we are not liable for items lost or damaged on return.

  • Initiating a Return: Contact us at cs@everymarket.com to start your return. We will provide a return shipping label and instructions upon approval. Returns without prior approval will not be accepted.

How to Return

  • Method: Returns must be sent back by mail to the address provided in the return instructions.

Return Label

  • Please contact us to get return labels.

Product Conditions for Return

  • Eligible Products: Returns are only accepted for items in new condition.

Nonreturnable Items

Certain items are not eligible for return:

  • Electronic devices after 30 days (e.g., computers, laptops, Kindles)

  • Gift cards, prepaid game cards

  • Perishable goods, live insects, some jewelry, some health and personal care items

  • Customized or personalized products

  • Items with special shipping restrictions

Refund Policy

  • Window: Eligible products may be returned within 30 days of delivery for a refund.

  • Refund Method: Refunds are processed to the original payment method or as store credit for items purchased with gift cards.

  • Processing Time: Refunds are processed within 3-5 business days after we receive the return; please allow additional time for shipping and bank processing.

Claims

Inspect your order upon arrival and report any defects, damages, or incorrect items immediately to allow us to address the issue. For claims, contact our support team with details of the issue.

Exchange Policy

For the quickest service, return your original item and place a new order for the desired product once your return is accepted.

Return Address

EveryMarket Customer Service 2101 E Terra Ln, O'Fallon, MO 63366

Customer Support

Available 24/7 for any questions or assistance needed:

  • Phone: +1 (800) 660-3783

  • Email: cs@everymarket.com

 

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