TOPDON Battery Load/Voltage Tester, Cranking & Charging Test with App

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Item # 259121199

$26.98

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Shop all TOPDON

TOPDON Battery Load/Voltage Tester, Cranking & Charging Test with App

Item # 259121199

$26.98

New Cardmembers earn a $20 Reward^‡ with qualifying purchase of $20 or more plus earn 5% in Rewards⁺ on this purchase. Valid through 8/9/26.

Neighbor’s Club Members earn points with purchases.

The TOPDON BT20 is an entry-level 12V battery tester designed for simplicity and reliability. Ideal for daily drivers, DIYers, and roadside emergency kits, it checks battery health, cranking performance, and charging system function in seconds. With support for standard flooded, AGM, and GEL batteries, the BT20 delivers quick diagnostics through a backlit LCD screen and intuitive controls. Lightweight and compact, it's a practical tool to keep in any glovebox or toolbox.

For additional information on this product, please see the Product Documents section for all downloadable user manuals, installation guides, brochures and warranty statements.

Tests 12V batteries for health, cranking ability, and charging system performance.
Compatible with flooded, AGM flat/spiral, and GEL lead-acid battery types.
Simple push-button operation with clear LCD display.
Supports 1002000 CCA test range for a wide variety of vehicles.
Compact, lightweight design for glovebox or emergency kit use.
Performs safe in-vehicle testingno battery removal needed.

Brand	TOPDON
Country of Origin	Imported
Battery Sizes Tested	12V
Battery Types Tested	Lead acid
Cable Length	19.7 in.
Display Type	LCD
Features	Performs battery, cranking, and charging tests; compatible with multiple lead-acid battery types; supports in-vehicle diagnostics; compact and portable for glovebox storage; user-friendly with button interface; fast, reliable results
Maximum Load Test Amperage	2,000 CCA
Maximum Load Test Voltage	16 v
Minimum Load Test Amperage	100 CCA
Minimum Load Test Voltage	6 v
Product Height	1 in.
Product Length	5.3 in.
Product Weight	0.5 lb.
Product Width	2.6 in.
Warranty	30 Days
Manufacturer Part Number	BT20

Q&As

1 - 1 of 1 Question

Q: Will it tell if the battery is being OVER charged? Resulting to damage to battery, as suggested by the J D Tractor serviceman.

7 months ago

1 Answer

A: Hi Neighbor- For additional information on this product, please see the Product Documents section for all downloadable user manuals, installation guides, brochures and warranty statements.
7 months ago
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