1 Scope
This part specifies dimensions, designation, methods of tests, requirements and test rules for primary batteries for watches.
This part is applicable to the several cases that a menu of test methods is given, when presenting battery electrical characteristics and/or performance data, the manufacturer specifies which test method was used.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 8897.1-2013 Primary Batteries — Part 1: General (IEC 60086-1:2011, MOD)
GB/T 8897.2-2013 Primary Batteries — Part 2: Physical and Electrical Specifications (IEC 60086-2:2011, MOD)
GB 8897.4-2008 Primary Batteries — Part 4: Safety of Lithium Batteries (idt IEC 60086-4:2007)
GB 8897.5-2013 Primary Batteries — Part 5: Safety of Batteries with Aqueous Electrolyte (IEC 60086-5:2011, IDT)
IEC 2859 (all parts) Sampling Procedures for Inspection by Attributes
IEC 3951 (all parts) Sampling Procedures for Inspection by Variables
IEC 60410 Sampling Plans and Procedures for Inspection by Attributes
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 8897.1 and the following apply.
3.1
capacitive reactance
part of the internal resistance, that leads to a voltage drop during the first seconds under load
3.2
capacity
electric charge (quantity of electricity) which a cell or battery can deliver under specified discharge conditions
Note: The SI unit for electric charge is the coulomb (1 C = 1 A·s) but, in practice, capacity is usually expressed in ampere hours (A·h).
3.3
fresh battery
undischarged battery 60 days maximum after date of manufacture
3.4
ohmic drop
part of the internal resistance that leads to a voltage drop immediately after switching the load on
4 Shape, Dimensions and Physical Requirements
4.1 Battery dimensions, symbols and size codes
Dimensions and tolerances of batteries for watches shall be in accordance with Figure 1, Table 1 and Table 2. The dimensions of the batteries shall be tested in accordance with 7.1.
The symbols used to denote the various dimensions in Figure 1 are in accordance with GB/T 8897.2-2013, Clause 4.
Dimensions in millimetres
Foreword III
IEC Introduction V
1 Scope
2 Normative References
3 Terms and Definitions
4 Shape, Dimensions and Physical Requirements
4.1 Battery dimensions, symbols and size codes
4.2 Terminals
4.3 Projection of the negative terminal (h5)
4.4 Shape of negative terminal
4.5 Mechanical resistance to pressure
4.6 Deformation
4.7 Leakage
4.8 Marking
5 Electrical Requirements
5.1 Electrochemical system, nominal voltage, end-point voltage and open-circuit voltage
5.2 Closed circuit voltage Ucc (CCV), internal resistance and impedance
5.3 Capacity
5.4 Capacity retention
6 Sampling and Quality Assurance
6.1 General
6.2 Sampling
6.3 Product quality indices
7 Test Methods
7.1 Shape and dimensions
7.2 Electrical characteristics
7.3 Test methods for determining the resistance to leakage
8 Visual examination and acceptance conditions
8.1 Preconditioning
8.2 Magnification
8.3 Lighting
8.4 Leakage levels and classification
8.5 Acceptance conditions
Annex A (Normative) Designation
Annex B (Normative) Inspection Rules
Bibliography
Figure 1 Dimensional drawing
Figure 2 Shape of negative terminal
Figure 3 Shape requirement
Figure 4 Schematic voltage transient
Figure 5 Curve: U = f(t)
Figure 6 Circuitry principle
Figure 7 Circuitry principle for method A
Figure 8 Circuitry principle for method B
Figure 9 Test by temperature cycles
Table 1 Dimensions and size codes
Table 2 Dimensions and size codes
Table 3 Minimum values of l1
Table 4 Applied force F by battery dimensions
Table 5 Standardised electrochemical systems
Table 6 Test method for Ucc (CCV) measurement
Table 7 Test method A for Ucc(CCV) measurement
Table 8 Discharge resistance (values)
Table 9 Storage conditions for the recommended test
Table 10 Storage conditions for optional test
Table B.1 Type inspection
