ITTSB.EU Blog Forum
AC or DC Electrical Energy related topics => Battery Internal resistance meter | Li-ion cells theory => Topic started by: Kiriakos GR on March 23, 2026, 02:12:11 PM
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You are a visitor of battery maker website, and at some point, you come across of blurry test reports and certifications.
What all this documentation worth for gaining customer trust?
NOTHING ...
Battery production this is a non-stop daily task, equal to a bakery selling every day fresh bread.
Test reports they are generated when a customer wish to buy large quantity, and few samples of the specific batch, they get tested mostly for compliance about hazardous materials, and or for safety compliance about due Air transportation.
Test reports cost money, and a new scamming industry, this is copying old test reports, so to cheat and avoid the costs.
Test reports labs they are legit, but they are scared too, they have a long list as Declaration
Long story in sort, they say, we tested few samples, and we have no responsibility of other batch of products.
The test report is invalid without the signatures of Ratifier, Reviewer and Testing engineer.
Objections to the test report must be submitted to us within 15 days.
Nobody is allowed to photocopy or partly photocopy this test report without written permission of us.
The test report is valid for the tested samples only.
The test report is invalid if altered.
How much it worth an test report this be few months old? = NOTHING :P
Why a factory this will deliver at a Test reports lab, an fake contacts email ? = Neither AI this has so much imagination so to come down with an answer. :P
In INDIA two Chinese battery makers started shipping inferior products, after obtaining BIS (India) certificate. Some sort equivalence to CE.
INDIA canceled both certificates, and these battery makers they cannot trade with INDIA any more. ;)
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In INDIA two Chinese battery makers started shipping inferior products, after obtaining BIS (India) certificate. Some sort equivalence to CE.
INDIA canceled both certificates, and these battery makers they cannot trade with INDIA any more. ;)
The Bureau of Indian Standards (BIS) canceled the company's registration in November 2024 following a crackdown on sub-standard lithium-ion cells.
The company's BIS registration remains canceled due to findings by the Ministry of Electronics and Information Technology (Meity) that it supplied cells with capacities significantly lower than their advertised ratings.
Quality Issues: Investigation revealed that some power banks marketed as 10,000 mAh actually contained cells with only 4,000 to 5,000 mAh.
How smart is that? Loosing an huge market as is INDIA because of cheating? :-X
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In summary, while the "sub-standard" reporting was primarily an Indian regulatory event, it served as a warning to international buyers to verify that cells from this manufacturer meet the specific safety standards (like UL for the US or IEC for Europe) before integration into consumer devices.
Mandatory China CCC Certification: In August 2024,
China made its own CCC (China Compulsory Certification) mandatory for lithium-ion batteries and power banks.
Any company failing these domestic inspections—including those previously exporting sub-standard goods—would be prohibited from manufacturing or selling those products even within China.
According to this information, cells production of 2023 or older , these will not include CCC printed markings.
Have this tip in mind, when you buying stock from any source ... ;)
In the positive side of things.
Buyers of branded cells production of 2025 or 2026, with CCC certification printed, they are somewhat in the safe side. :)