BatteryInfoView and BatteryHistoryView share an author — Nir Sofer of NirSoft — a portable, no-install philosophy, and a subject: your laptop battery. They read completely different sources. BatteryInfoView reads the battery live, right now, and can keep its own log while it runs. BatteryHistoryView extracts the history Windows itself has already recorded in the SRUDB.dat database, including periods when no NirSoft tool was running at all. Used together they cover present and past. Used alone, each has a blind spot the other fills. This page belongs to our Comparisons hub.
BatteryHistoryView: the past Windows already kept
BatteryHistoryView, currently at v1.06 in the NirSoft utilities index at the time our fact base was compiled, works on Windows 10 and 11 and extracts battery history stored by Windows in SRUDB.dat. Its records include Timestamp, Cycle Count, Designed Capacity, Full Charged Capacity, Charge Level and Percent, Active and Connected Standby times on AC and DC, and energy values. In plain terms: Windows has been quietly keeping a diary of your battery, and BatteryHistoryView is the reader for that diary.
That has two consequences. First, the history predates your download — you can see capacity and cycle progression from before you ever thought to monitor it. Second, it is bounded by what Windows chose to record and retain in that database; it is not a live instrument and it does not add new readings of its own while you watch.
BatteryInfoView: the present, live, plus its own log
BatteryInfoView shows current status and information about the battery. Battery Information (F7) refreshes every 10 seconds: Designed Capacity, Full Charged Capacity, Battery Health % (Full Charged divided by Designed), Current Capacity, Voltage, live Charge/Discharge Rate, Chemistry, Power State, cycle count where provided, and estimated time fields. Battery Log (F8) then builds a forward-looking record: a new line every 30 seconds, extra lines on suspend and resume, with optional auto-save of each line to a comma- or tab-delimited file. Export in either view is Ctrl+S to CSV, tab-delimited, HTML or XML. It is portable freeware from our download page (the official NirSoft file via /go/batteryinfoview).
Our dedicated walkthrough, BatteryHistoryView: See the Battery History Windows Already Records, covers the sister tool in depth, and the Battery Log guide covers BatteryInfoView’s own recording. Read together they show the overlap plainly: both can give you Designed and Full Charged Capacity over time, one retrospectively from Windows, one prospectively from the moment you start logging.
Side-by-side comparison
| Aspect | BatteryHistoryView | BatteryInfoView |
|---|---|---|
| Source | Windows SRUDB.dat database (history Windows recorded) | Live reading from the battery, plus its own log |
| Time direction | Backwards — history before you installed anything | Now, and forwards while the log runs |
| Platform note | Windows 10 / 11 (SRUDB-based) | Windows 2000 through Windows 11 per official requirements |
| Key fields | Timestamp, Cycle Count, Designed / Full Charged Capacity, Charge Level/Percent, AC & DC active/CS times, energies | 19 live fields including Voltage, Charge/Discharge Rate, Chemistry, Health % and time estimates |
| Live rate | No live discharge-rate instrument | Charge/Discharge Rate updated live |
| Author / price | Nir Sofer / NirSoft, freeware | Nir Sofer / NirSoft, freeware |
| Install | Portable NirSoft utility | Portable, no installation |
Which blind spot matters to you?
- “Was this used laptop’s battery already worn when it was sold?” BatteryHistoryView first — its records may reach back before the sale. Cross-check with a live BatteryInfoView reading today.
- “What is draining my battery right now?” BatteryInfoView, live rate plus the 30-second log. History cannot show a drain test you are running this minute.
- “How has my Full Charged Capacity declined month by month?” BatteryHistoryView for the recorded trend; BatteryInfoView exports for the trend from today onwards. See how to export a battery report.
- “I am on an older Windows version without the SRUDB history:” BatteryInfoView, whose official support runs from Windows 2000 to Windows 11.
Verdict: this is the friendliest “vs” on the site, because the correct answer is usually both. They are free, portable, tiny and from the same author — run BatteryHistoryView once to learn where your battery has been, then keep BatteryInfoView for where it is going. More pairings are on the Comparisons hub, including BatteryInfoView vs powercfg /batteryreport, Windows’ own other history view, and the Alternatives overview.
A two-tool routine that covers the whole timeline
Put together deliberately, the two NirSoft utilities form a complete, free monitoring routine that costs nothing and installs nothing. Step one, once: run BatteryHistoryView and review the recorded history — note the earliest and latest Full Charged Capacity and cycle count it surfaces from SRUDB.dat, and export or screenshot the trend for your records. That is your battery’s biography up to today. Step two, from today: keep BatteryInfoView wherever you keep portable tools, open it when you want a live reading, and let the Battery Log build your own forward record whenever you run a deliberate discharge — monthly, say — exporting each session with Ctrl+S and filing it by date. Step three, when something feels off: compare. If the live health percentage continues the slope the history showed, you are watching normal wear. If it breaks from that slope suddenly, something specific happened, and the log from the relevant session is where you look first.
Notice what this routine never requires: an account, a resident background service, a subscription, or trust in a cloud dashboard. Both tools are small, portable and read-only; neither changes a system setting; the records live on your machine in formats — HTML, CSV, XML — that will still open in a decade. That plainness is the shared NirSoft design philosophy, and it is why the most sensible conclusion to a “versus” between two tools by the same author is not a winner at all. BatteryHistoryView tells you where the battery has been. BatteryInfoView tells you where it is and, logged over time, where it is heading. A battery owner who runs both knows more about their battery than either tool alone can say — for the price of two small downloads from the same page of the internet.
Limits of the recorded history
One caution belongs on the history side specifically. BatteryHistoryView can only show what Windows recorded in SRUDB.dat and retained — gaps happen, databases get reset by reinstalls and major upgrades, and a freshly installed Windows on an old laptop may hold a surprisingly short diary for a physically old battery. An empty or short history is therefore not evidence of a new battery; it is evidence of a young database. The live side has the mirror-image limit: BatteryInfoView knows nothing before the moment you run it. Reading the two limits together is the whole argument of this page in one sentence — history is bounded by the database, the present is bounded by the moment, and the pair of them, used together, is bounded by far less than either alone.