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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🔋 Power up your ride with smart, instant battery insights!

SAFETY FIRST DESIGN - Reverse polarity and no-spark protection keep you and your vehicle safe during every test.
SMART APP INTEGRATION - Unlock advanced cranking and charging tests via the intuitive Batterylab app for iOS & Android.
GLOBAL USER FRIENDLY - Supports 8 languages with long clamp leads for easy testing inside or outside your vehicle.
UNIVERSAL 12 V COMPATIBILITY - Works seamlessly with 12V lead-acid batteries across cars, trucks, boats, and motorcycles.
INSTANT BATTERY HEALTH CHECK - Get reliable battery status in under 1 second with 99.5% accuracy—no more guessing.

The TOPDON BT20 is a compact, budget-friendly 12V battery tester offering fast, highly accurate load testing (100-2000CCA) with Bluetooth-enabled app features for cranking and charging analysis. Compatible with a wide range of vehicles, it ensures safe, reliable diagnostics with multi-language support and real-time voltage history tracking.

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Are the products genuine and authentic?+

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.

How long does delivery take and is it reliable?+

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.

What is Desertcart? Is it safe to order from?+

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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TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Manufacturer	TT TOPDON
Part number	BT20 Car Battery Tester
Item Weight	331 g
Package Dimensions	18.69 x 9.3 x 8.2 cm; 331 g
Item model number	TOPDON BT20 Car Battery Tester
Color	Black
Style	Compact
Power source type	Battery Powered
Item Package Quantity	1
Number Of Pieces	1
Measurement Accuracy	10CCA
Display Style	LCD
Specification met	Iec,sae
Included components	1BT20 Car Battery Tester; 1User Manual.
Batteries Included?	No
Batteries Required?	No

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

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