TOPDON AL500B-UK OBD2 Scanner and Battery Tester

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Product guide

TOPDON AL500B-UK OBD2 Scanner and Battery Tester

Scanner Tester: The TOPDON AL500B-UK combines an OBD2 code reader with battery testing in one handheld tool. Its listed functions include reading and clearing diagnostic trouble codes, viewing freeze-frame data and checking I/M readiness, alongside battery, cranking and charging tests. The listing describes those battery tests for 12/24V batteries, while another highlight specifies a 12V battery test, so confirm the intended battery coverage before buying.

At a glance

Supports reading and clearing DTCs, viewing freeze-frame data and looking up ECU versions.
A one-touch I/M readiness button is intended for a quick emissions-readiness status check.
Data stream can be displayed with a waveform graph.
Manufacturer claims free software updates through a computer connection.
Can print diagnostic and battery-test reports for saving and review.
Menu and DTC definitions are advertised in seven languages, though the supplied list names six.

Price

£62.97Save 15%

Reference price: ~~£74.28~~

Price checked: 14 Nov 2026

View offer

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£7.99

Pros and cons

Pros

Combines code reading with battery, cranking and charging tests, reducing the need for separate diagnostic and battery tools.
The included OBD-II connector and battery test cable with clamps cover the two advertised connection types.
Free computer-based software updates are claimed, with no yearly subscription stated for updates.
Customer feedback describes straightforward code scanning and clearing, and values the battery-testing function.

Cons

The manufacturer highlights describe battery testing as 12V in one place and cranking and charging tests for 12/24V in another, so the exact supported test scope is unclear.

Technical specifications

6 specifications

Identity
Brand	TOPDON
Model	AL500B-UK

Display
Screen size	2.8 Inches

Power
Power configuration	Battery Powered

Dimensions and weight
Dimensions listed	22.5L x 12.5W x 9H centimetres
Weight listed	240 Grams

What to know before buying

Listing details to confirm

Listing details are inconsistent or unconfirmed: one highlight says the battery tester works when connected with a phone and identifies 12V battery testing, while the feature text describes the AL500B as a 2-in-1 tool with cranking and charging tests for 12/24V batteries. The listing does not clarify whether phone connection is required, so confirm operating method and battery-test coverage before purchase. The language claim says seven languages but names only English, French, German, Spanish, Portuguese and Japanese.

What’s in the box

Included

AL500B 2-in-1 OBD2 code reader and car battery tester
Battery test cable with clamps
Carrying bag
User manual
Quick user guide
Mini-USB data transfer cable
OBD-II 16-pin connector cable

Who is it for?

A good fit for

Drivers wanting a handheld tool for basic OBD2 code reading and clearing as well as battery checks.
Owners who want freeze-frame data, ECU version lookup, I/M readiness checks and graph-based data display.
Users who prefer to print diagnostic or battery-test reports and update a scanner through a computer.

Less suited to

Buyers who need a clearly confirmed 12V-only or 24V battery-testing specification before purchase.
Anyone seeking advanced multi-system diagnostics or specific vehicle-service functions not stated for this model.

TOPDON AL500B-UK OBD2 Scanner and Battery Tester · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 2,220 ratings

5 stars68%68%
4 stars15%15%
3 stars8%8%
2 stars2%2%
1 star7%7%

Customer feedback highlights ease of use, code scanning and clearing, battery testing, perceived accuracy, build quality and portability. These reports make the combination of an OBD2 reader and battery tester relevant for routine home checks, but they do not settle the listing's conflicting 12V versus 12/24V descriptions or clarify the stated phone-connection requirement. The overall rating distribution is mostly five-star but includes a meaningful one-star share, so experiences are not uniformly positive.

Positive themes

Customers describe the scanner as easy to use and praise its code scanning and clearing.
Feedback reports appreciation for the battery-testing function, accuracy, build quality and portability.

Frequently asked questions

What diagnostic functions does the AL500B-UK list?

The listing describes reading and clearing DTCs, viewing freeze-frame data, ECU version lookup, a one-touch I/M readiness check and waveform display of data streams.

What battery tests does it support?

The listing advertises battery, cranking and charging tests. Its details differ on whether battery testing is 12V or 12/24V and whether phone connection is required, so confirm those points before buying.

Does it require a paid software-update subscription?

The manufacturer claims updates are free and installed by connecting the scanner to a computer. The supplied information does not state a recurring update fee.

What is included?

The package list names the AL500B unit, battery test cable with clamps, carrying bag, user manual, quick user guide, Mini-USB data transfer cable and OBD-II 16-pin connector cable.