The BatteryDays Briefing

A periodic briefing for battery professionals and energy-storage installers — EU battery regulation, cell authenticity and traceability, second-life, and lithium & LFP market shifts.

Editions

• #10 · 14 Sept 2026 A 2% China battery tax lifts CATL and EVE domestic cell prices
• #9 · 7 Sept 2026 EU publishes the 71-data-point battery passport checklist
• #8 · 31 Aug 2026 The EU battery label format clock still has not started
• #7 · 24 Aug 2026 EU battery labels are now mandatory on every cell
• #6 · 17 Aug 2026 Non-China ESS demand overtakes China for the first time
• #5 · 10 Aug 2026 India makes measured-capacity testing mandatory for cells
• #4 · 3 Aug 2026 The EU battery passport registry is live before the 2027 mandate
• #3 · 27 Jul 2026 The Section 301 wall on non-EV Chinese cells is up
• #2 · 22 Jul 2026 EU battery due diligence guidelines land 26 July
• #1 · Jun 2026 The EU label spec that missed its own deadline