A resting voltage flatters a cell; a load test does not · review
A tester covering every household cell size and four chemistries, showing the measured voltage and state of charge on an LCD, from a battery maker.
What the figures leave us with Broad coverage from the company that makes the cells. The one open question is whether it loads them.
The tester that empties the drawer of unknown batteries.
Reliable measurement of battery voltage with the current state of charge shown clearly on an LCD display. Suitability for AA, AAA, C and D cells, 9 V blocks, round cells and button cells. Support for alkaline, NiMH, lithium and zinc-carbon chemistries. Supplied with two LR44 cells.
A nickel-metal-hydride cell is fully charged at about 1.2 V; an alkaline cell at that voltage is nearly finished. A tester that treats both the same will consistently condemn good rechargeables. Stating the supported chemistries is therefore a real specification, and this one states four.
Whether the tester applies a load while it reads. That is the difference between a battery tester and a voltmeter with a cradle, and it is the whole reason this category exists. The listing describes voltage measurement and state of charge without saying how the second is derived.
No such listing: the American Amazon shop answers the reference with a search box rather than a page.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
| Amazon reference | B0CY2X32YP (identical on 5 markets) |
|---|---|
| EAN | 4008496073849 |
| Power | AA / AAA / C / D / 9 V / button cells · alkaline, NiMH, lithium, zinc-carbon |
A multimeter reads the open-circuit voltage, which a nearly flat alkaline cell still passes. A battery tester is meant to load the cell while reading it, which is what reveals a cell that collapses under demand. Whether this one does so is not stated in the listing.
Yes. A healthy NiMH cell sits at 1.2 V and a healthy alkaline at 1.5 V, so a tester that does not know which it is holding will mark good rechargeables as flat. VARTA states support for four chemistries.
They are included, and they are the cells most often replaced unnecessarily because nobody can tell whether the old one was dead.
7.2/ 10
Broad coverage from the company that makes the cells. The one open question is whether it loads them.
A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom. Listed is not the same as in stock — availability changes daily.
Details checked on August 31, 2026.
The drawer full of cells nobody can identify as good or flat.
Amazon reports what buyers took in the month before this page was last checked: at least 100.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Specifications: the manufacturer sheet for measuring instruments and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
AAA / AA / C / D / 9 V blocks · LCD charge state · no setup
A universal tester for primary and rechargeable cells with an LCD charge indication and no configuration — insert the cell and read.
Best for: A household tester where the only question is whether to bin the cell.
6 V and 12 V lead-acid · 100–2000 CCA · battery, starter and charging tests
A different instrument from the rest of this hub: a vehicle battery tester using conductance measurement to check a 6 V or 12 V lead-acid battery, its starter draw and its charging system.
Best for: Diagnosing a car that will not start, where the question is the battery, the starter or the alternator.
≈ $68
AA / AAA / C / D / 9 V / CR123A / CR2 / button cells · three-state LCD
A tester covering the widest cell list here — including CR123A and CR2 photographic lithium cells — reporting GOOD, WEAK or LOW on an LCD.
Best for: Anyone with camera, torch or sensor lithium cells that no other tester in this hub accepts.
