BatteryInfoView’s Chemistry field is one short word or phrase in a long table, and it is easy to scroll past. It is worth a pause, because that one value identifies the rechargeable technology inside your battery pack — and because it is a field where the official documentation is unusually specific about examples, and unusually open-ended after them. This page sticks strictly to what NirSoft documents: the examples the official description actually names, what each of those technologies is in brief general terms, and what the field’s open-ended wording does and does not license us to claim. Get the tool from the download page (the official NirSoft file via /go/batteryinfoview) and find your own value in the Battery Information view (F7); the wider topic map is the Battery Health hub.
The field, exactly as documented
Chemistry is field 13 in the official field list. NirSoft’s description gives examples in this form: Lithium Ion, Nickel Cadmium, Nickel Metal Hydride, ‘and so on’. Two things about that wording deserve respect. First, those three are the explicitly documented examples — the values this page can discuss as documented. Second, ‘and so on’ is part of the documentation: the list is deliberately not closed, because the field displays the chemistry of whatever battery is fitted, and battery technology is broader than any three examples.
That openness cuts both ways, and this site observes it in both directions. We do not claim the three named types are the only values the field can show — ‘and so on’ forbids that reading. And we do not add further named chemistries to the documented list on the strength of plausibility: a chemistry you may well encounter in laptops is still not a documented BatteryInfoView example unless NirSoft’s description names it, so it is not presented here as one. If your battery reports a value outside the three examples, you are looking at the ‘and so on’ in action, and the value your battery reports is the fact of the matter for your machine.
Lithium Ion — the documented example you are most likely to see
In brief general terms: lithium-ion is the rechargeable chemistry of the modern laptop era, built around lithium ions moving between electrodes through an electrolyte. It offers high energy density — a lot of stored energy for its weight — which is why it became the default for portable computers. For BatteryInfoView users, the practical relevance is that the capacity story told elsewhere on this site — Designed Capacity versus Full Charged Capacity, and the gradual decrease of Battery Health from around 100% — is, on a modern machine, almost always the story of a lithium-ion pack. See Designed Capacity vs Full Charged Capacity and Battery Health % Explained for how that story is measured.
Nickel Cadmium — an older documented example
Nickel Cadmium (often shortened to NiCd) is the oldest of the three documented examples: a nickel-and-cadmium rechargeable technology that powered earlier generations of portable equipment, before lithium-ion took over laptops. In general terms it is known for robustness and for a well-documented quirk of its era — capacity behaviour that made disciplined full discharge cycles part of period practice — and cadmium’s toxicity is why the technology has been displaced in consumer devices and is tightly restricted in many markets. In BatteryInfoView terms, you are most likely to meet this value on genuinely old hardware or equipment built around legacy packs; the field reports what is fitted, and on such a machine the chemistry value is a quick confirmation of the pack’s generation.
Nickel Metal Hydride — the middle documented example
Nickel Metal Hydride (NiMH) sits between the other two examples in laptop history: a nickel-based rechargeable technology that replaced cadmium with a hydrogen-absorbing alloy, removing cadmium from the design while keeping the general nickel-chemistry character. In brief general terms, it improved on its predecessor’s capacity and environmental profile and saw wide use in portable devices of its period, though laptops ultimately standardised on lithium-ion. As with Nickel Cadmium, meeting this value in the Chemistry field today generally says something about the age or specialist nature of the equipment — which is itself useful diagnostic context when the machine’s other readings, such as its capacities and cycle count, are being interpreted.
What the Chemistry field does not do
Chemistry is an identification field, and it is worth being plain about its limits. BatteryInfoView does not adjust anything based on it, offer chemistry-specific advice, or provide chemistry-dependent features — the same capacities, health calculation, log and estimates apply whatever the field says. There is no temperature field whose behaviour varies by chemistry, no per-cell reading, and no charging control to configure (see Laptop Battery Calibration: What BatteryInfoView Can and Cannot Do for the full honest list). The field’s job is narrower and still valuable: it tells you what kind of battery every other number on the screen describes, so that when you read a health percentage, shop for a replacement (see How to Choose the Right Replacement Laptop Battery), or describe the machine to someone helping you, the technology generation is part of the record rather than a guess.
One reporting caution applies to this field as to several others in the program: BatteryInfoView displays battery information as the battery and system report it. Fields such as Serial Number and Manufacture Date are documented as shown only if the battery provides them, and the general principle — the display is only as complete as what is reported — is the right mindset for the whole table, Chemistry included. If the field is empty on your machine, that is a reporting gap to note, not a value to invent. More field-by-field help is collected under the Battery Health hub, and sibling explainers such as Battery Serial Number and Manufacture Date follow the same documentation-first approach.
Frequently asked questions
My chemistry value is not one of the three named here. Is that an error?
Not on the evidence of the documentation. NirSoft’s own description ends its examples with ‘and so on’, so values beyond the three named examples are anticipated by the author. This page discusses only the documented examples and does not rename or reclassify what your battery reports.
Does chemistry change how Battery Health is calculated?
No. Battery Health is calculated from Full Charged Capacity and Designed Capacity regardless of chemistry. The formula and a worked example are in Battery Health % Explained.
Can BatteryInfoView change or optimise charging for my chemistry?
No. The program displays and logs information only; it has no charging control, charge limiting or optimisation feature for any chemistry.