Market Data Methodology

Battery Market Intelligence · Last reviewed 2026-09-15

Direct answer: Every figure published here carries a source and a date. Numbers are collected from primary sources first, cross-checked, and flagged rather than silently averaged when sources conflict. No figure is fabricated or extrapolated without saying so.

Source hierarchy

Tier	Source type	Examples
1 — Primary	Government & official statistics	Customs/export data, national statistics bureaus, trade bodies
2 — Industry	Established industry publications	Trade associations, reputable market research
3 — Secondary	News & aggregators	Used for leads, not final numbers

Why figures conflict — and what we do about it

Two credible sources can report very different numbers for the same market, and the difference is almost always a matter of scope, definition or date:

Scope — cells vs packs, new vs recycled, one application vs all applications, value vs volume.
Definition — "battery market" can mean manufacturing output, installed capacity, or end-market value.
Date — a calendar year vs a rolling period; a forecast vs an actual.

A concrete example: the "China battery market" is quoted at roughly USD 7 billion in one scope and roughly USD 50 billion in another. Both are defensible — they measure different things. The disciplined move is to show both with their scope, not to pick one, which is what this site does (see the China battery market report).

The rules

Source and date on every figure — a number without both is not published.
Conflict is flagged — when two sources disagree, the disagreement is stated and its likely reason noted, not hidden behind an average.
No fabricated market size, price or growth rate — if a figure cannot be sourced, it is omitted.
Unit and currency are stated — no silent conversion or false precision.
Data period and geography are stated — a "2025" figure says whether it is full-year, YTD, or a forecast.

The Author's Take

Position: Market data is only as trustworthy as its sourcing — a chart with no source is decoration, and a sourced number with a visible conflict is the honest version. The useful skill is reading the scope, not the headline number.

Reasoning: Battery-market figures vary wildly between sources because of different definitions and dates. The disciplined move is to show the source and the conflict, not to produce a fake-clean single number — and the reader who asks "what scope and what date" is the one who actually understands the figure.

This is the author's editorial view, not investment advice.

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