How to connect to bluetooth? I tried to connect via phone setting but failed.

Hello, attached is a video to show you the detailed steps. If you still can't connect it to your phone, please let us know the OS and model of your phone so that we might check your issue further. Any further questions, feel free to contact us.

Can i get instant results after pressing test?

Hello, please wait a few seconds after pressing the Test button, and the corresponding Battery Voltage Indicator (FULL / MEDIUM / LOW) and Battery Health Indicator (GOOD / MEDIUM / BAD) will light up to show the test result. Please note that once the Bluetooth is connected, the Test Button on the battery tester will no longer work. In this case, you can only test batteries via the APP. Any further questions, feel free to contact us.

does it test lithum battery and agm battery

Im not a 100% sure, but as long as i know it test many types of batteries

Do you have a product that can test a 2 volt battery?

No, TOPDON doesn't have a battery tester that will test a 2V battery. If you have any other questions in the future, feel free to contact us at support@topdon.com.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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12V Car Battery Tester, TOPDON BT20 Battery Load Tester 100-2000CCA, Cranking&Charging Test via App, Record Voltage History, Automotive Battery Analyzer&Checker for Car Truck SUV Boat

12V Car Battery Tester, TOPDON BT20 Battery Load Tester 100-2000CCA, Cranking&Charging Test via App, Record Voltage History, Automotive Battery Analyzer&Checker for Car Truck SUV Boat

Product ID: 465599569

Details

Brand
TOPDON
Color
Black
Item Weight
9.28 ounces
Power Source
Battery
Style
Compact

📊Real-time voltage waveform graphs

📱Bluetooth app-enabled advanced tests

🔋12V lead-acid battery support

Description

🔧 Power up your ride with precision — don’t get caught off-guard!

SAFE USER FRIENDLY DESIGN - Reverse polarity and no-spark protection with long clamps for hassle-free, safe testing anywhere.
UNIVERSAL 12 V COMPATIBILITY - Works seamlessly with cars, motorcycles, boats, and trucks—your all-in-one battery guardian.
INSTANT BATTERY HEALTH CHECK - Get accurate battery status in under 1 second with 99.5% precision—no more guessing.
MULTI LANGUAGE SHAREABLE REPORTS - Supports 8 languages and lets you save & share detailed test reports—perfect for pros and enthusiasts alike.
APP EXCLUSIVE CRANKING CHARGING TESTS - Unlock deeper diagnostics via the 'Batterylab' app for real-time voltage graphs and playback.

The TOPDON BT20 is a compact, budget-friendly 12V lead-acid battery load tester that pairs with your smartphone via Bluetooth to deliver fast, highly accurate battery diagnostics. Featuring four test modes—including app-exclusive cranking and charging tests—it provides real-time voltage waveform graphs and data playback for in-depth analysis. Designed for universal vehicle compatibility and enhanced safety, it’s the perfect tool for car owners and small repair shops seeking reliable, professional-grade battery insights at under $20.

Specifications

ASIN	B0B5T7212M
Best Sellers Rank	#122,126 in Automotive ( See Top 100 in Automotive ) #114 in Battery Testers
Brand Name	TOPDON
Color	Black
Customer Reviews	4.4 4.4 out of 5 stars (1,641)
Global Trade Identification Number	00850028162750
Included Components	1BT20 Car Battery Tester; 1User Manual.
Item Dimensions	5.71 x 2.8 x 1.38 inches
Item Weight	9.28 ounces
Manufacturer	TT TOPDON
Measurement Type	Voltmeter
Minimum Operating Voltage	5 Volts
Model	TOPDON BT20 Car Battery Tester
Part Number	BT20 Car Battery Tester
Power Source	Battery Powered
Specification Met	Iec,sae
Style Name	Compact
UPC	850028162750
Unit Count	1.0 Count
Warranty Description	TOPDON provides 2 Year Warranty for all products. In case of any inquiries, please feel free to contact us at 833-956-8335 Monday-Friday 9:00AM-6PM Eastern Time.

Common Questions

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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