BS EN 62133-2:2017 – TC Tracked Changes. Secondary cells and batteries containing alkaline or other non-acidelectrolytes. Safety requirements for portable sealed secondary cells, and for batteries made from them, for use in portable applications Lithium systems

Alkaline batteries
Hazards
Electrolytes
Charge measurement
Impact tests
Type testing
Electrical testing
Vibration testing
Thermal-cycling tests
Electric cells
Safety measures
Storage batteries
Portable

Link: BS EN 62133-2:2017 – TC Tracked Changes. Secondary cells and batteries containing alkaline or other non-acidelectrolytes. Safety requirements for portable sealed secondary cells, and for batteries made from them, for use in portable applications Lithium systems
Source: BSI Standards

BS EN IEC 61280-4-1:2019 Fibre-optic communication subsystem test procedures Installed cabling plant. Multimode attenuation measurement

Performance testing
Fibre optics
Fibre optic connectors
Optical communication systems
Telecommunication
Optoelectronic devices
Fibre optic cables
Attenuation
Optical fibres

Link: BS EN IEC 61280-4-1:2019 Fibre-optic communication subsystem test procedures Installed cabling plant. Multimode attenuation measurement
Source: BSI Standards