Article 3 Unit of capacity measurement

The capacity of portable secondary (rechargeable) batteries and accumulators shall be expressed in ‘milliampere-hour(s)’ or ‘ampere-hour(s)’, using the abbreviations mAh or Ah respectively.

The capacity of automotive batteries and accumulators shall be expressed in ‘ampere-hour(s)’ (Ah) and ‘Cold Cranking Amperes’ (A), using both these abbreviations.