– Lithium-ion Polymer Cell
   SD 301325
   3.7V 90mAh 0.333Wh
+ Date: 2020.06.29 

Lithium-ion Battery submitted by LiPol Battery Co., Ltd. are tested according to IEC 62133-2:2017 Secondary cells and batteries containing alkaline or other non-acid electrolytes Safety requirements for portable sealed seconds cells. and for lithium-ion batteries made from them, for use in portable applications.

Lithium-ion cells and lithium-ion batteries subject to intended use be safe and continue to function in all respects. Cells and batteries subject to reasonably foreseeable misuse do not present significant hazards.

5.2 Insulation & Wiring

Insulation Resistance between an accessible metal case (excluding electrical contacts) and positive terminals > 5MO. Internal wiring and insulation are sufficient to withstand maximum anticipated current, voltage and temperature requirements. The orientation of wiring maintains adequate creepage and clearance distances between conductors. The mechanical integrity of internal connections is sufficient to accommodate conditions of reasonably foreseeable misuse.

5.3 Venting

Lithium-ion battery cases and lithium-ion cells incorporate a pressure relief mechanism or are constructed so that they relieve excessive internal pressure at a value and rate that will preclude rupture, explosion, and self-ignition. The venting mechanism exists on a narrow side of the pouch cell. Encapsulation used to support lithium-ion cells within an outer casing does not cause the battery to overheat during normal operation no inhibit pressure relief.

5.4 Temperature /Voltage /Current Management

The lithium-ion batteries are designed such that abnormal temperature rise conditions are prevented. Over-discharge, over current and short-circuit proof circuit used in this lithium-ion battery. Means are provided to limit current to safe levels during charge and discharge. The lithium-ion batteries are designed such that within the temperature, voltage and current limits specified by the cell manufacturer. Lithium-ion batteries are provided with specifications and charging instructions for equipment manufacturers so that associated chargers are designed to maintain charging within the temperature, voltage and current limits specified.

5.5 Terminal Contacts

Terminals have a clear polarity marking on the external surface of the lithium-ion battery. The size and shape of the terminal contacts ensure that they can carry the maximum anticipated current. External terminal contact surfaces are formed from conductive materials with good mechanical strength and corrosion resistance. Terminal contacts are arranged to minimize the risk of short circuits.

5.6 Assembly of Lithium-Ion Cells into Lithium-ion Batteries

5.61 If there is more than one lithium-ion battery housed in a single battery case, lithium-ion cells used in the assembly of each battery have closely matched capacities, be of the same design, be of the same chemistry and be from the same manufacturer. Each lithium-ion battery shall have independent control and protection. Manufacturers of lithium-ion cells make recommendations about current, voltage and temperature limits so that the lithium-ion battery manufacturer/designer may ensure proper design and assembly. Lithium-ion batteries that are designed for the selective discharge of a portion of their series-connected lithium-ion cells incorporate separate circuitry to prevent the cell reversal caused by uneven discharges. Protective circuit components are added as appropriate and consideration was given to the end-device application. When testing a lithium-ion battery, the manufacturer of the lithium-ion battery provides a test report confirming the compliance according to this standard. The battery incorporates separate circuitry to prevent lithium-ion cell reversal from uneven charges as the pack is designed for the selective discharge of a portion of its series-connected cells.

5.6.2 Design Recommendation for Lithium System Only

For the lithium-ion battery consisting of a single cell or a single cell block:
charging voltage of the lithium-ion cell does not exceed the upper limit of the charging voltage specified in Clause 8.1.2, Table 4 or Charging voltage of the lithium-ion cell does not exceed the different upper limit of the charging voltage determined through Clause 8.1.2, NOTE1.

5.7 Quality plan

The manufacturer has prepared a quality plan defining the procedures for the inspection of materials, components, lithium-ion cells, and lithium-ion batteries and which covers the process of producing each type of lithium-ion cell and a lithium-ion battery.

Tests were conducted with the number of lithium-ion cells or lithium-ion batteries as outlined in Table 2 of IEC 62133 with lithium-ion cells or lithium-ion batteries that were not more than six months old. Unless noted otherwise in the test methods, thieving was conducted in an ambient of 20°C±5°C.