External short circuit at room,
bsmi certification,

▍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.

6.1 External short circuit at room
temperature
After the cell is fully charged in accordance
with the test method specified in 4.5.1, place
it in an environment of 20 ℃
for the surface temperature of the cell to
reach 20 ℃
minutes. Then connect the positive and
negative terminals of the cell with wires and
make sure that all external resistances are 80
mΩ±20 mΩ.
Monitor the cell temperature change during
the test. When one of the following two
situations occurs, the test is terminated:
a) The cell temperature drops to 20% lower
than the peak value;
b) The short-circuit time reaches 24 h.
The cell should not catch fire or explode and
the highest temperature does not exceed 150
C.
Note, the Chinese room tracking coefficient of
the wire is Xiaoping 5X10-1 ℃-1. Such as
constantan wire, etc.
Deleted the “External short circuit
at room temperature “test.
6.2 High temperature external short circuit
After the cell is fully charged according to the
test method specified in 4.5.1, place it in an
environment of 55 ℃
surface temperature of the cell to reach 55 ℃
± 5 ℃
Then connect the positive and negative
terminals of the cell with a wire and ensure
that all external resistances are 80 mΩ±20
mΩ.
Monitor the cell temperature change during
the test. When one of the following two
situations occurs, the test is terminated:
a) The cell temperature drops to 20% lower
than the peak value;
b) The short-circuit time reaches 24 h. The
cell should not catch fire or explode and the
highest temperature does not exceed 150 C.
Note, the Chinese room tracking coefficient of
the wire is Xiaoping 5X10-1 ℃-1. Such as
constantan wire, etc.
Amended the temperature and note
6.1 High-temperature external short-circuit
After fully charging the cell according to the
test method specified in 4.5.1, place it in an
environment of 57 ℃ ± 4 ℃ . After the cell
surface temperature reaches 57 ℃ ± 4 ℃,
leave it for another 30 minutes.
Then connect the positive and negative
terminals of the battery with wires, and ensure
that all external resistances are 80 mΩ±20
mΩ.
Monitor the battery temperature change
during the test. When one of the following two
situations occurs, the test is terminated:
a) The cell temperature drop reaches 20% of
the peak temperature rise;
b) The short circuit time reaches 24 h.
When there is a dispute, a) and b) choose
the stricter one.
The battery should not catch fire or
explode.
6.3 Overcharge
After the cell is discharged according to the
Amended the requirements marked in bold
6.2 Overcharge