A conductance reading is an estimate, not a load test · review
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.
The last word The tester for someone who does not want a tester. It answers one question and gets out of the way.
A hand-held checker with two color-coded clamps and a row of LEDs. Connect it to the battery posts and read the lamps.
State of charge and, under load, whether the battery can still deliver. Ansmann states that a damaged starter battery can be identified early this way, which is the honest scope: it flags a battery on its way out rather than quantifying how far it has gone.
No voltage figure, no internal resistance, no CCA entry, no charging-system test. Everything above this price adds numbers; this one adds a verdict.
Households with one car, and anyone who wants to know before winter whether the battery is the weak link — without learning what a cold cranking amp is.
On sale at around $9 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.
| Batteries | 12 V starter batteries, stated |
|---|---|
| Reading | LED indicators for state of charge and load capability, stated |
| Setup | None — no CCA figure to enter |
| Clamps | Color-coded, stated |
| Stated purpose | Early identification of a failing starter battery |
| Amazon reference | B0000WPK1M |
| EAN | 0616268479849 |
To separate "the battery is flat" from "the battery is fine and something else is wrong", yes. To decide whether a battery will survive another winter, no — that is what a conductance tester with a state of health figure is for.
A state of charge reading is taken with the engine off and, ideally, after the car has stood. A reading straight after a run is flattered by surface charge.
At $9, it is the 1 cheapest of the 3 models in this category published here.
6.9/ 10
The tester for someone who does not want a tester. It answers one question and gets out of the way.
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.
A driver who wants a yes-or-no answer before calling anyone.
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.
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.
12 V · 100–2000 CCA · battery health, cranking and charging tests · real-time waveform · data printing
The one that prints. Real-time waveform display and printed results move this from a driveway check to something you can hand to somebody else.
Best for: Anyone testing batteries for other people, or keeping records across a small fleet.
≈ $36
