DIN EN 50272-4 : 2007

Introduction
1 Scope
2 Normative references
3 Definitions
4 Operating instructions
5 Dimensions and interchangeability of cells and batteries
6 Electrical safety
   6.1 Protection against incorrect connection polarity
   6.2 Design of battery and battery compartments
   6.3 Compartments for consumer replaceable batteries
7 Safe handling and protection against misuse
   7.1 Charging
   7.2 Thermal abuse
   7.3 Mechanical impact
   7.4 Protection against pole reversal in the event of deep
       discharge
   7.5 Protection against electrical overload
   7.6 Safe handling
8 Battery compartments
   8.1 Battery accommodation
   8.2 Replacement battery enclosures
   8.3 Battery contacts
   8.4 Protection against hazards caused by released gas
9 Measures in the event of accidents with batteries
   9.1 Swallowing button cells
   9.2 Burns or positioning caused byleaking batteries
10 Marking and disposal of batteries for use in portable
   appliances
Annex A (informative) Instructions for use and
        recommendations to the end-users
   A.1 Instructions for use
   A.2 Recommendations to the end-users
Bibliography

Applies to the safety aspects associated with the accommodation, the arrangements of circuits and the operation of secondary cells and batteries in portable appliances.