An independent record of the global battery economy
The Battery Ledger
Its people, its companies, and its milestones. Every figure checked at its original source.
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Five numbers that explain the market. Each links to the piece that sources it.
$108
per kWh: average lithium-ion pack price, 2025, a record low
57 days
until US: Section 45X domestic content test
67%
of the world's refined lead now comes from recycling
70%+
of 2025 battery deployment went into EVs
−97%
fall in grid battery failure rates, 2018 to 2023
Latest on The Register
The people of the battery economy, on the record.
Hall of Fame · October 2026
Dr Francisco Trinidad
Former Director of Battery Technology, Exide · Alpha Beta Society
For forty-three years he advanced the oldest rechargeable battery there is, from a Madrid laboratory to the technology direction of a global manufacturer, and…
Read the profile →
On the Record · September 2026
Dr Graeme Fraser-Bell
Vice President, Lithium Sales · ENTEK
Three decades at the commercial heart of the battery separator industry, now helping scale ENTEK’s giga-facility in Indiana.
Read the Q&A →
On the Record · September 2026
Jill Pestana
Founder & CEO, Pestana Solutions · Director of Research & Programming, NAATBatt International
A battery scientist with more than a dozen patents who built a career after being told her personality was ‘not that of a researcher’,…
Read the Q&A →
On the Record · September 2026
Brian Morin
Co-founder & CEO, Soteria Battery Innovation Group
He set out to solve the problem that haunts the lithium-ion battery, fire, with a fuse built inside the cell and an unusual coalition…
Read the Q&A →More analysis
All insights →
Data Centres · 11 Oct
Battery Capacity Built for EVs Is Finding a Second Market in Grid Storage
North America built formidable battery-manufacturing capacity for the electric car. When a vast new market appeared almost overnight, the industry was ready,…
Industry · 11 Oct
Building the UK’s Battery Supply Chain, One Connection at a Time
Britain's gigafactories get the headlines. The more interesting story is everything being built around them: the suppliers, the researchers, the grid connections…
Industry · 5 Oct
The Battery Price That Governs
Lithium-ion battery prices fell to a record low in 2025, to $108 a kilowatt-hour on average. The striking part is that they…
Departures
The industry’s calendar · next out
Nov 10Battery Innovation DaysStockholm
Nov 15Batteries EventLyon
Nov 17Battery Japan [Osaka]Osaka
Compliance, Falling Due
Regulatory deadlines · checked at source
Section 45X domestic content testUS · 31 December 202657DAYSCalifornia AB 2440 in forceUS · 31 December 202657DAYSNew Jersey landfill banUS · 7 January 202764DAYS
All compliance dates →Insights
Analysis of the global battery economy, every figure checked at its original source.
Checked at source
Every figure, named
Right of reply
Seen before it’s published
Corrected openly
Put right, in public
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