China Watch is a weekly briefing on under-reported regulatory developments from China’s environmental and battery sectors.
What Happened
On June 1, 2026, China’s State Administration for Market Regulation (SAMR) announced an update to the CCC (China Compulsory Certification) requirements for lithium-ion batteries used in portable electronics. A new mandatory national standard—GB 47372-2026 “Safety Technical Specification for Mobile Power Banks”—is now in effect.
The key changes:
– New mandatory tests: Thermal abuse (elevated temperature exposure), nail penetration, overcharge, and short-circuit testing are now required for CCC certification
– Expanded scope: Both the power bank itself (category 0914) AND the lithium cell inside it (category 0916) must now pass independent certification
– Transition period: Until March 31, 2027. After that date, all products sold in China must meet the new standard
– Old certificates invalidated: Existing CCC certificates for power banks and power bank cells must be re-certified under the new rules by the deadline
Why This Matters Outside China
1. The World’s Power Banks Come From China
Something like 80-90% of the world’s lithium-ion power banks are manufactured in China. If you sell power banks or portable battery packs in any market, your supply chain almost certainly passes through a Chinese factory. When China raises its domestic safety standard, the factories that upgrade their processes to meet it produce better cells. The ones that don’t—or can’t—dump their non-compliant inventory into export markets with weaker regulations.
The practical effect: Over the next 10 months (the transition period), you’ll see a bifurcation. Tier-1 factories will upgrade their production lines and raise prices 10-15% to cover the added testing costs. Marginal factories will exit the domestic market entirely and flood export channels with pre-standard cells at distressed prices. If you’re buying power bank cells in Q3-Q4 2026, know which factory type you’re buying from.
2. The Nail Penetration Test Is the Real Filter
The inclusion of nail penetration testing is significant because it’s the most demanding safety test for lithium cells. Driving a steel nail through a charged cell creates an internal short circuit that rapidly escalates to thermal runaway if the cell design doesn’t inherently resist it. Passing this test requires:
– Ceramic-coated separators (adds $0.02-0.05/cell at scale)
– Electrode design that limits short-circuit current (trade-off with energy density)
– Electrolyte formulations with flame-retardant additives (adds $0.03-0.08/cell)
Cells designed to pass nail penetration are fundamentally different from cells designed only to pass overcharge and external short-circuit tests. The factories that have been making nail-penetration-capable cells (mostly for EV applications) will have an advantage. The factories that have been optimizing for cost alone will struggle.
3. The Re-Certification Deadline Creates a Supplier Shakeout
Manufacturers must submit their products for re-testing under the new standard and receive updated CCC certificates before April 1, 2027. China has a limited number of accredited CCC testing laboratories with nail penetration capability. Testing capacity is going to be the bottleneck.
The crunch: If 2,000+ power bank models need re-certification and each test cycle takes 4-6 weeks, the testing labs can process maybe 300-500 certifications per quarter. That means factories that submit late—say, December 2026—may not get results before the deadline. A factory without a valid CCC certificate on April 1, 2027 cannot legally sell in China.
This creates a binary outcome for Chinese power bank manufacturers: those who submit early and pass, and those who don’t. If your supplier is in the second group, they may be perfectly capable of making safe products but will be locked out of the domestic market anyway—and will be desperate to export.
What You Should Do Now
If you buy power banks or lithium cells from China:
1. Ask your supplier when they’re submitting for re-certification under GB 47372-2026
2. If they say “we already passed”—ask for the new certificate number, not the old one. Old certificates will show the previous standard (GB 31241 or GB 40165). The new certificate must reference GB 47372-2026.
3. If they haven’t submitted yet, ask when. If the answer is “later this year,” factor supply risk into your Q1 2027 planning.
If you compete with Chinese power bank manufacturers:
The Chinese domestic market will consolidate around manufacturers that pass the new standard. The non-compliant factories will attempt to export aggressively. If you’re selling in price-sensitive markets (Southeast Asia, Africa, South America), expect downward price pressure through mid-2027 as non-compliant inventory clears through export channels.
The Bottom Line
A mandatory nail penetration test for power bank cells is a genuine safety improvement that will make Chinese power banks safer. But the 10-month transition creates a period of supply chain uncertainty. The factories that pass early will have pricing power. The factories that don’t will flood export markets. Know which type you’re dealing with.
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China Watch is a weekly briefing on under-reported regulatory and industry developments in China’s environmental and battery sectors. Sources: SAMR Announcement June 1, 2026; GB 47372-2026 full text via National Public Service Platform for Standards Information.
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