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Product guide

TOPDON BC100 12V Battery Tester

The TOPDON BC100 battery tester checks 12V lead-acid batteries, cranking voltage and charging-system voltage. Its compact LCD unit also claims playback of saved test results, while its charging-system check does not charge the battery.

At a glance

The listing describes a three-part check of battery condition, cranking voltage and alternator or charging-system voltage.
Claims support 12V lead-acid battery types including flooded, AGM, GEL and EFB, with a stated 100-2000 CCA range.
The LCD menu and data playback are intended to help view current results and revisit stored tests.
A compact listed footprint and claimed 31.5-inch test cables may suit storage in a tool bag and access around an engine bay.

Price

$47.18Save 21%

Reference price: ~~$59.99~~

Price checked: Nov 14, 2026

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Often bought together

khanka Hard Case for TOPDON BT100 12V Car Battery Load Tester,Black | EVA Hard Shell, Mesh Pocket Accessory Storage, Workshop Tool Storage, Elastic Strap Fixation, Protective Case Only

$18.99

Pros and cons

Pros

Combines battery-condition, cranking-voltage and charging-system checks in one tester.
Supports several common 12V lead-acid battery types according to the listing.
Playback of previous test results may help compare readings over time.

Cons

The charging-system test checks voltage but does not recharge the battery.
The stated scope is 12V lead-acid batteries, so this is not presented as a universal tester for other battery voltages or chemistries.

Technical specifications

16 specifications

Identity
Brand	TOPDON
Model	BC100

Display
Screen technology listed	LCD
LCD resolution	128x64

Compatibility and testing
Minimum operating voltage	12 volts
Battery chemistry support claimed	Regular Flooded, AGM Flat Plate, AGM Spiral, GEL, and EFB
CCA testing range claimed	100-2000 CCA
Checks claimed	battery condition, cranking voltage, and alternator/charging-system voltage
Compatible vehicles listed	Cars, Trucks, Motorcycles, Boats, ATVs, SUVs, Golf Carts

Power and battery
Power configuration	Battery Powered

Dimensions and installation
Dimensions listed	5.3 x 3 x 1 inches
Weight listed	9 ounces
Test cable length claimed	31.5-inch cables

Other listed details
Color	Blue
Upper temperature rating	140 °F
Specification met	CE, FCC, RoHS, UKCA

What to know before buying

Listing details to confirm

Listing details are inconsistent: the dimensions are given as 5.3 x 3 x 1 inches in specifications and 5.37 x 2.97 x 0.89 inches in feature text. Confirm the version and fit if exact dimensions matter. The listing also describes this as a load tester while specifying conductivity testing, so the testing method is not clearly reconciled. Turn off the vehicle ignition before testing and follow the manual's safety guidance.

What’s in the box

Included

TOPDON BC100 battery tester

Who is it for?

A good fit for

Drivers or vehicle owners who want a portable way to check a supported 12V lead-acid battery and charging voltage.
Users who want to review stored readings when monitoring battery condition or comparing results.

Less suited to

Anyone who needs a battery charger, since the charging-system check does not charge the battery.
Buyers who need a tester for battery voltages or chemistries beyond the listed 12V lead-acid types.

TOPDON BC100 12V Battery Tester · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 73 ratings

5 stars87%87%
4 stars2%2%
3 stars3%3%
2 stars0%0%
1 star8%8%

Customer feedback describes the tester as convenient and easy to use, and says it helps users assess battery health. That aligns with the listed LCD interface and battery-condition check, though feedback does not independently confirm the stated testing range or accuracy. The ratings are mostly five-star but include a smaller one-star portion, so experiences are not uniformly positive.

Positive themes

Customer feedback praises ease of use and convenience.
The feedback summary says customers find it useful for assessing battery health.

Frequently asked questions

What checks does the TOPDON BC100 perform?

The listing says it checks battery condition, cranking voltage and alternator or charging-system voltage. The charging-system check does not charge the battery.

Which batteries does it support?

The listing specifies 12V lead-acid batteries, including regular flooded, AGM flat plate, AGM spiral, GEL and EFB, with a stated range of 100-2000 CCA.

Does the BC100 store earlier results?

The listing claims a data-playback function for storing and reviewing previous test results.

Does it work with 24V batteries?

The listing specifies 12V batteries and does not establish 24V compatibility. Buyers needing 24V testing should confirm that capability before purchase.