TOPDON BT100-UK 12V Car Battery Tester, 100–2000 CCA

The TOPDON BT100-UK is a 12V battery tester for checking battery health, engine cranking and charging-system performance. Its three test functions and support for several lead-acid battery types make it suited to routine checks, while its claimed 100–2000 CCA range is a listing specification rather than an independent measurement.

At a glance

Runs three checks: battery health, cranking and charging-system performance.
The listing specifies compatibility with regular flooded, AGM flat plate/spiral, EFB and GEL lead-acid batteries.
Three-colour LEDs and menu-driven operation are intended to make results easier to interpret.
The listing describes reverse-polarity protection and sparkproof copper clamps. It is a tester, not a battery charger.

Price

£36.79Save 20%

Reference price: ~~£45.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Combines battery condition, cranking and charging-system checks in one device.
Reports SOH, SOC, voltage, current and a battery rating, according to the listing.
The listed battery types and vehicle applications extend beyond ordinary passenger cars.

Cons

The stated 12V scope does not cover vehicles that require a 24V battery tester.

Technical specifications

15 specifications

Identity
Brand	TOPDON
Model	BT100-UK

Power and battery
Power configuration	Battery Powered

Dimensions
Dimensions listed	13.7 x 7.6 x 23 centimetres

Testing and compatibility
Rated battery range	12V 100-2000CCA
Supported battery types	regular flooded, AGM flat plate/spiral, EFB, and GEL
Test functions	health test, cranking test, and charging systems test
Displayed results	SOH, SOC, voltage, current, and rating

Construction and operating limits
Colour	Black Blue
Minimum operating voltage	9 Volts
Maximum operating voltage	18 Volts
Upper temperature rating	65 Degrees Celsius
Measurement type	Voltmeter
Listed compliance	CE, FCC, RoHS, UKCA

Other listing details
Guarantee	24 month guarantee

What to know before buying

Compatibility, measurement accuracy, safety features and performance are manufacturer or listing claims, not independently established results. Confirm the battery type and procedure in the manual before testing.

What’s in the box

Included

BT100 vehicle battery tester
User manual

Who is it for?

A good fit for

DIY vehicle owners who want to assess a 12V lead-acid battery and check cranking and charging systems.
Garages or workshops that regularly test compatible batteries in cars, motorcycles, trucks, RVs, ATVs, boats or other listed vehicles.

Less suited to

People needing a tester for 24V systems or batteries outside the listed lead-acid types.
Buyers looking for a battery charger, jump starter or full vehicle diagnostic scanner.

TOPDON BT100-UK 12V Car Battery Tester, 100–2000 CCA · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 3,219 ratings

5 stars73%73%
4 stars14%14%
3 stars5%5%
2 stars4%4%
1 star4%4%

Customer feedback describes the tester as easy to navigate, clear to read and useful for battery, cranking and charging checks, with some customers reporting precise readings. Those impressions are relevant to the listed three-test design, but they do not independently verify accuracy. Battery life feedback is mixed, so buyers should not assume consistent long-term battery performance from the reports.

Positive themes

Customers describe the controls as easy to navigate and the display as clear.
Customer feedback includes positive reports about functionality and battery readings.