Differences between IEC62133-2 : 2017 and KC 62133-2 : 2020,
KC,

▍What is GOST-R Declaration?

GOST-R Declaration of Conformity is a declaration document to prove goods are complied with Russian safety regulations. When the Law of Product and Certification Service was issued by Russian Federation in 1995, compulsory product certification system came into force in Russia. It requires all products sold in Russian market to be printed with GOST mandatory certification mark.

As one of methods of mandatory conformity certification, Gost-R Declaration of Conformity bases on inspection reports or quality management system certification. In addition, Declaration of Conformity has the characteristic that it can only be issued to a Russian legal entity which means the applicant (holder) of the certificate can only be a Russian officially registered company or foreign office that registered in Russia.

▍GOST-R Declaration Type and Validity

1. Single Shipment Certificate

Single shipment certificate is only applicable to specified batch, specified product stipulated in a contract. Specific information is strictly under control, such as item name, quantity, specification, contract and Russian client.

2. Certificate with validity of one year

Once a product is granted the certificate, manufacturers can export products to Russia within 1 year without limit of shipment times and quantities to specific client.

3. Certificate with validity of three/five years

Once a product is granted the certificate, manufacturers can export products to Russia within 3 or 5 years without limit of shipment times and quantities to specific client.

▍Why MCM?

●MCM possesses a group of engineers to study Russian latest regulations, ensuring latest GOST-R certification news can be shared accurately and timely with clients.

●MCM builds close cooperation with the local the earliest-established certification organization, providing stable and effective certification service for clients.

▍What is EAC?

According to The Relevant Common Criteria and Rules of Technical Regulations for Kazakhstan, Belarus and the Russian Federation which is an agreement signed by Russia, Belarus and Kazakhstan on October 18 2010, the Customs Union Committee shall devote to formulating uniform standard and requirement to ensure the safety of product. One certification is applicable for three countries, which forms the Russia-Belarus-Kazakhstan CU-TR certification with a uniform mark EAC. Regulation put into effect gradually from February 15^th 2013. In January 2015, Armenia and Kyrgyzstan joined Customs Union.

▍CU-TR Certificate Type and Validity

1. Single Shipment Certificate

Single shipment certificate is only applicable to specified batch, specified product stipulated in a contract. Specific information is strictly under control, such as item name, quantity, specification contract and Russian client. When applying for the certificate, no samples are requested to offer but documents and information are required.

1. Certificate with validity of one year

Once a product is granted the certificate, manufacturers can export products to Russia within 1 year without limit of shipment times and quantities.

1. Certificate with validity of three years

Once a product is granted the certificate, manufacturers can export products to Russia within 3 years without limit of shipment times and quantities.

1. Certificate with validity of five years

Once a product is granted the certificate, manufacturers can export products to Russia within 5 years without limit of shipment times and quantities.

▍Why MCM?

●MCM possesses a group pf professional engineers to study custom union latest certification regulations, and to provide close projects follow-up service, ensuring clients’ product enter into the region smoothly and successfully. 

●The abundant resources accumulated through battery industry enables MCM to provide efficient and lower-cost service for client. 

●MCM builds close cooperation with local relevant organizations, ensuring latest information of CU-TR certification is shared accurately and timely with clients.

The new standard KC 62133-2:2020 has been implemented. The differences between KC62133-2
and IEC62133-2 are briefly summarized as follows：
Clause IEC62133-2 : 2017 KC 62133-2 : 2020
1. Scope -
Definitions from KS C IEC61960-3
application scope (for mobile devices)
- Coin-shaped cells and batteries using
them are excluded from the scope of
application
- Personal transporter under 25 km / hr
(Self balancing scooter, E-bike)
Comment
1) Coin-shaped cells and batteries will be excluded from the scope
- it cannot be expanded, because of the old KC scope (there is no justification)
2) Self balancing scooter etc. will be in the scope
- This product is one of dangerous good, but the scope of IEC standard cannot be
covered. So KC 62133-2 : 2020 will include it in the scope before new IEC standard
develops.
7.1.2 Second
Procedure
See Figures A.1 and A.2 for an example of
an operating region for charge and
discharge. See
Table A.1 for a list of lithium ion
chemistries and examples of operating
region parameters.
Removed the left side statement and
replaced with following statement:
Note: The voltage and current of the
charging procedure conditions may vary
depending on the temperature operating
section. (Example Between T2 and T3 in
Figure A.1 or T1 or T4)
Comment
This amendment is based on IEC 62133-2/AMD1 (21A/721/CDV)
Previous 7.1.2 Second procedure of IEC 62133-2 : 2017 is conflict with Annex A.
KC doesn’t require ± 5 testing result when recommended temperature range is applied
anymore.
7.3.5
Crush(Cells)
b) Test
Each fully charged cell, charged according
to the second procedure at the upper limit
charging temperature in 7.1.2, is
immediately transferred and crushed
between two flat surfaces in an ambient
temperature.
Removed bolded text.
b) Test
Each fully charged cell, charged according
to the second procedure at the upper limit
charging temperature in 7.1.2, is
immediately transferred and crushed
between two flat surfaces in an ambient
temperature.
Comment
This amendment is based on IEC 62133-2/AMD1 (21A/721/CDV)
There is a typo (bold text) in 7.3.3 clause, TC21A experts have agreed it, it is conflict
with table 1 – Sample size for type tests
本 期 主 要 内 容 第 7 页
7.3.6
Over-charging
of battery
b) Test
The test shall be carried out in an ambient
temperature of 20 °C ± 5 °C. Each test
battery shall be discharged at a constant
current of 0,2 It A, to a final discharge
voltage specified by the manufacturer.
Sample batteries shall then be charged at
a constant current of 2,0 It A, using a
supply voltage which is:
• 1,4 times the upper limit charging voltage
presented in Table A.1 (but not to exceed
6,0 V) for single cell/cell block batteries or
• 1,2 times the upper limit charging voltage
presented in Table A.1 per cell for series
connected multi-cell batteries, and
• sufficient to maintain a current of 2,0 It A
throughout the duration of the test or until
the supply voltage is reached.
Added bolded text.
b) Test
The test shall be carried out in an ambient
temperature of 20 °C ± 5 °C. Each test
battery shall be discharged at a constant
current of 0,2 It A, to a final discharge
voltage specified by the manufacturer.
Sample batteries shall then be charged at
a constant current of 2,0 It A, using a
supply voltage which is:
• 1,4 times the upper limit charging voltage
presented in Table A.1 (but not to exceed
6,0 V) for single cell/cell block batteries or
• 1,2 times the upper limit charging voltage
presented in Table A.1 per cell for series
connected multi-cell batteries, and
• sufficient to maintain a current of 2,0 It A
throughout the duration of the test or until
the supply voltage is reached.
• However, in case the charging voltage
specified by the manufacturer is higher
than the overcharge test voltage, the
maximum charging voltage specified
by manufacturer should be applied with
2.0 ItA,
(e.g., quick charging power bank, etc.)
Comment
This amendment is a national difference in Korea. our KTR will declare it with the
calculation of volumetric energy density after fixing this KATS notification.
We found the testing of overcharging of battery in IEC 62133-2 : 2017 is useless thing
for batteries with advanced charging method (Qualcomn, adaptive charge, PD method)
This charging voltage of battery can be exceeded than 1.4 times the upper limit charging
voltage for single cell or single cell block or 1.2 times limit charging voltage for series
connected multi-cell batteries.
Ex) Power bank.
- Cell block : 3.7 V , 10 000 mAh
- Input : 5V, 9V, 12V (Qualcomn 3.0 applicable)
- Overcharge testing voltage in IEC62133-2:2017 : max 6 V, 20 000 mAh
- Overcharge testing voltage in KC62133-2:2020 : 12 V, 20 000 mAh
It means that the testing condition of Overcharge of batteries in KC is more severe.
(Actually, this condition is practical measure for this advanced battery.)