UNI-T UT673A Battery Tester, 12V/24V, 40–2000 CCA

The Uni-Trend UT673A is an automotive battery tester with battery, cranking and charging system test functions. Its listed CCA range and compact dimensions suit vehicle owners and repair users who want diagnostic readings, but the listed capacity and voltage ranges conflict and should be checked before purchase.

At a glance

Provides battery health, cranking-system and charging-system checks according to the listing.
Claims support for several lead-acid battery types, including AGM, GEL and EFB.
Compact listed dimensions of 7.6 x 2.2 x 14.2 centimetres and weight of 0.35 kg.

Price

$60.34Save 20%

Reference price: ~~$75.43~~

Price checked: Nov 13, 2026

View offer

Pros and cons

Pros

Combines battery, cranking and charging system tests in one tool.
Lists multiple battery standards and chemistries, including AGM, GEL and EFB.

Technical specifications

16 specifications

Identity
Brand	Uni-Trend
Model	UT673A

Testing claims
CCA range in title	40-2000 CCA
Battery capacity in title	30Ah to 250Ah
Battery capacity in feature text	30AH-200AH
Battery capacity in another feature	3-250AH
Battery voltage range	7V-16V
Battery standards and ranges	CCA: 40~2000; BCI: 40~2000; CA: 40~2000; MCA: 40~2000; JIS: 26A17~245H52; DIN: 40~1400; IEC: 40~1400; EN: 40~2000; SAE: 40~2000; AH: 3~250AH
Battery types	Ordinary lead acid battery, AGM flat plate battery, AGM spiral battery, GEL battery, EFB battery
Cranking and charging test voltage	12V/24V cranking system test 7~30V DC √ 12V/24V charging system test 7~30V DC √

Power and battery
Power configuration	Battery Powered
Power source stated in detailed specifications	Power None, powered by external source

Dimensions and installation
Dimensions listed	7.6 x 2.2 x 14.2 centimetres
Weight listed	0.35 kg

Other listed details
Operating temperature	-20 ℃to 50℃
Display	128*64 black and white lattice

What to know before buying

Listing details to confirm

The title, feature text and specification panel disagree on supported battery capacity, and voltage claims differ by test type. Power is described both as battery powered and as externally powered. Confirm the applicable capacity, voltage and power configuration for the selected listing before buying.

What’s in the box

UNI-T UT673 car battery testerIncluded
1 AAA batteryCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Vehicle owners checking lead-acid battery condition and starting or charging systems.
Repair users who need a compact tester supporting common automotive battery standards.

Less suited to

Buyers who need confirmed capacity or voltage limits without resolving the listing's conflicting specifications.
Buyers seeking evidence of lithium-battery support, which is not stated for this model.

UNI-T UT673A Battery Tester, 12V/24V, 40–2000 CCA · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 118 ratings

5 stars71%71%
4 stars17%17%
3 stars4%4%
2 stars3%3%
1 star5%5%

Customer feedback describes the tester as useful, while reliability opinions are mixed. That matters for buyers who plan to rely on diagnostic readings for maintenance decisions. The listing's battery, cranking and charging checks may suit those uses, but customer impressions do not confirm measurement accuracy or resolve the conflicting specifications.

Positive themes

Customers describe the device as useful.

Mixed feedback

Opinions on reliability vary.

Frequently asked questions

What tests does the UT673A claim to perform?

The listing describes battery condition, cranking-system and charging-system tests. It also says readings can include voltage, cold-start current and battery health.

Which battery capacity does it support?

The listing is inconsistent: the title says 30Ah to 250Ah, while feature text gives 30AH-200AH and elsewhere 3-250AH. Confirm the range for the selected listing.

Does it work with 24V batteries?

The listing claims use with 12V and 24V batteries and gives 12V/24V cranking and charging test ranges, but also describes the UT673A as a 12V lead-acid tester. Check the selected listing's exact supported test and voltage limits.