A conductance reading is an estimate, not a load test · review
A 12 V tester built around one idea: three tests, no menus. TOPDON states it as a tool for people tired of specifications, and the interface follows.
The last word Three tests, no menus, one voltage. For most drivers that is the right trade.
A clamp-on 12 V tester that runs three tests: the battery, the cranking event and the charging system.
Checking a car you are about to buy. A battery near the end of its life is a €150 conversation the seller has not started, and a ten-second test answers it.
24 V, printing, app export, or lithium. Each of those is a step up in price and, for a household with one petrol or diesel car, none of them changes the answer.
Conductance, like every hand-held tester here. It estimates state of health rather than measuring capacity, and TOPDON does not pretend otherwise.
On sale at around $78 on the American Amazon store at the time of checking.
Prices and availability are what Keepa reported on the date this page was updated; both move.
Prices quoted in this text were read on 4 September 2026. The live price is at the top of the page.
| Voltage | 12 V lead-acid batteries, stated |
|---|---|
| CCA range | 100–2000 CCA, stated |
| Tests | Battery test, cranking test, charging system test — stated |
| Design intent | Stated by the maker as simple enough to use without specialist knowledge |
| Use case stated | Checking a used car before buying |
| Amazon reference | B08WXQZ788 |
| EAN | 0632111336718 |
The maker states 12 V lead-acid types including AGM. Lithium starter batteries are not named, and where a maker does not name a chemistry the safe answer is that it is not supported.
Seconds — that is the nature of a conductance test. It is also why it can be done on a forecourt without anyone minding.
At $78, it is the 3 cheapest of the 3 models in this category published here.
7.5/ 10
Three tests, no menus, one voltage. For most drivers that is the right trade.
A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom, United States. Listed is not the same as in stock — availability changes daily.
Details checked on September 4, 2026.
Buying a used car, and checking your own before winter.
Listed because the attachment names this tool by name.
Specifications: the manufacturer sheet for garage tools and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
12 V starter batteries · LED indicators, no display · color-coded clamps · no settings to enter
The simplest tester on this shelf: colored LEDs rather than a screen, no figures to enter, and a verdict a driver can read without knowing what CCA means.
Best for: A driver who wants a yes-or-no answer before calling anyone.
≈ $9
6/12/24 V · 100–2000 CCA entry · 2–220 Ah · battery, cranking and charging tests
A three-voltage tester that covers 24 V as well as car batteries, with cranking and charging system tests alongside the battery reading.
Best for: A household with a van or a motorhome as well as a car.
6/12 V · 100–2000 CCA · flooded, AGM flat plate and more · color LCD · alloy clamps
The tester that names the chemistries it supports and reports internal resistance alongside voltage — the two things that separate a diagnosis from a light.
Best for: Someone who wants the underlying numbers rather than a pass or fail.
