BatteryDays Briefing · Week of 10 August 2026

India makes measured-capacity testing mandatory for cells

A briefing on battery regulation, China's supply chain, and prices, for the people who buy and deploy the cells.

Regulation Watch

India now wants a measured capacity number, not a printed one. A MeitY order dated 3 February 2026 makes rated-capacity verification mandatory for lithium cells and batteries registered under IS 16046 (Part 2):2018, requiring an actual discharge-performance test at 20°C per Clause 7.3.1 of IS 16047 (Part 3):2018. Existing BIS licensees have until 30 April 2027, or their licence expiry if sooner, to comply.

For Importers: ask suppliers now for IS 16047 Part 3 measured-capacity test reports, and check BIS licences will be renewed against the new requirement before the April 2027 cut-off.

Certification-India

Australia's home-battery rebate now steps down twice a year. Since 1 May 2026 the Cheaper Home Batteries Program pays out on a six-monthly step-down instead of an annual one, and a new tiered structure gives larger batteries a lower rebate per kWh; the budget was expanded from about A$2.3bn to A$7.2bn over four years in the 13 December 2025 announcement, with eligibility still running through Clean Energy Council approval (now phasing in SA TS 5398).

For ESS installers: confirm each battery model sits on the CEC approved list, and price the six-month step-down into the timing of Australian quotes — a slipped install date can cost the customer a rebate tier.

Clean Energy Council

DateWhat changesWho should care
1 Apr 2026China Interim Measures on NEV battery recycling in force (Digital ID; "echelon use" dropped)Second-life operators / recyclers
1 May 2026Australia home-battery rebate switches to six-monthly step-downESS installers (Australia)
1 Jul 2026China GB/T 46991.1-2025 SOCE health-readout standard effectiveSecond-life / SoH graders
30 Apr 2027India IS 16047 measured-capacity compliance deadline for BIS licenseesImporters into India

China & Global Supply Watch

MIIT reopened its lithium-battery manufacturing whitelist, and added ongoing reporting. Directive 工电子函〔2026〕45号, issued by MIIT's Electronic Information Division in June 2026, reopened applications for the 锂离子电池行业规范条件 (lithium-ion battery industry norm conditions) list; companies apply online at ldchy.cn, and firms already on the list must now file monthly operating reports and annual self-assessments or face adjustment or removal. This is the manufacturing-capability list, separate from the second-life recycling whitelist.

For Procurement: check that your cell suppliers appear on the current norm-conditions list at ldchy.cn before you treat compliance as a given.

Hunan provincial reprint of the MIIT notice

Gotion locked in a solid-state line, for 2030, not next year. Volkswagen-backed Gotion has finalized the design of a 2 GWh all-solid-state "Jinshi" line (sulfide electrolyte, 350 Wh/kg at cell level, a 0.2 GWh pilot running at 90% yield) and is scaling its 300 Wh/kg "G-Yuan" semi-solid battery toward 12 GWh, aiming for small-batch EV integration by end-2026 and mass production by 2030.

For EV-grade cell buyers: treat "G-Yuan" semi-solid as a liquid cell for handling and safety, and set genuine solid-state sourcing expectations to 2030 — the 2026 date is a pilot, not a supply commitment.

CarNewsChina

The big storage cell has forked, and the difference is one amp-hour. The large-format ESS cell has split into two near-identical camps: CATL and Hithium back the 587 Ah general-purpose cell, in mass production since June 2025, while REPT Battero, CALB and Cornex back a 588 Ah cell tuned for long duration and a claimed 10,000-plus cycles. Both store about 1.88 kWh.

For ESS buyers: the two are not interchangeable on a spec sheet — decide whether you need proven 587 Ah availability now or the long-duration-tuned 588 Ah, and confirm which family the cell in your quoted system actually is.

ESS News

Cell / lineBackersKey numbersStatus
587 Ah cellCATL, Hithium~1.88 kWh · general-purposeMass production since Jun 2025
588 Ah cellREPT Battero, CALB, Cornex~1.88 kWh · 10,000+ cyclesEmerging · long-duration
Gotion Jinshi (ASSB)Gotion / VW2 GWh line · 350 Wh/kg · sulfideMass production 2030
Gotion G-Yuan (semi-solid)Gotion / VW300 Wh/kg · scaling to 12 GWhSmall-batch EV by end-2026

Second-life & SoH

China wrote an accuracy rule for the battery-health number. GB/T 46991.1-2025, published 31 December 2025 and effective 1 July 2026, introduces a State of Available Energy (SOCE) health readout whose displayed value must sit within 5% of the physically measured value, and it specifies minimum residual-capacity floors of 82% at 5 years / 100,000 km, 75% at 8 years / 160,000 km and 70% at 10 years / 200,000 km. It is a recommended standard (GB/T), not a mandatory one, but it gives the used-cell market a common yardstick.

For Second-life operators: adopt the 5% SOCE accuracy rule and the 82 / 75 / 70% capacity floors as intake grading thresholds when you quote used Chinese EV modules.

electrive

China's recycling rules dropped "echelon use" and mandated a Digital ID. The Interim Measures for the Management of Recycling and Comprehensive Utilization of Waste NEV Traction Batteries, jointly issued 16 January 2026 by MIIT, NDRC, MEE and others, took effect 1 April 2026. They abandon the term "echelon use", explicitly ban reusing waste traction batteries in e-bikes, mandate a national traceability platform keyed to a battery "Digital ID", and require end-of-life NEVs to be scrapped with their batteries intact (except swap models).

For Second-life operators: ask Chinese suppliers whether their retired modules carry the new GB/T 34014 Digital ID and traceability records before you buy.

SESEC

Decoder Corner

Verify the batch when it arrives. The traceability code printed on a Chinese-made cell can only be read once the goods are in your hands. When a delivery lands, paste a code into the decoder: it returns the manufacturer, chemistry, spec and exact production date in seconds, enough to catch relabeled or aged stock before you sign off the batch.

For Buyers / QA: decode a sample of codes from every incoming delivery before accepting it.
Try it · live decoder · e.g. 04QCB76831800JC390000502

Battery Code Decoder

DECODE

Paste any code from a Chinese-made cell. The decoder reads the maker, the spec and the true factory date. Full tool at batterydays.com.


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