Batteries – dry & alkaline international equivalents

This is a list of commonly found batteries, their equivalents, physical dimensions in millimetres, nominal open-circuit voltage and their mass in grams. Please note that battery voltage and capacity depends on formulation. In the IEC battery designation system, the first letter of the battery code defines the formulation. Please see Battery formulation – IEC codes for more information. This letter is denoted by the * character in this table.


IEC Type US UK Japanese French Height Width Depth or Diameter Nominal Voltage Capacity (mA hours) Mass (grams)
*R1 N   UM5 Lady 30   12 1.5    
*R8D425 AAAA             1.5    
*R3 AAA HP16 UM4 Micro 44.5   10 1.5    
*R6 AA HP7 UM3 Mignon 50.5   14.5 1.5    
*R12 C HP11 UM2 Baby 50   26.2 1.5    
*R20 D HP2 UM1 Mono 61.5   34.2 1.5    
6*F22   PP3     48.5 26.5 17.5 9    
6*F50   PP6           9    
    PP7     62.2 46 46 9    
6*F100   PP9     81 66 52 9    
2*R10   No 8     74.6   21.8 3 1120 42.5
3*R12   312G     67 62 22 4.5 2300 113
3*R20   126     92 103 35 4.5 5760 369
4*R25-2 918A 918S     127 137 73 6 15000 1080
4*R25 Lantern (spring terminal) 996 or 908     110 67 67 6   600
4*R25 Lantern (screw terminal) HP992     110 67 67 6   600
    11A     16   10 6 33 4
4*R44   476A     25   13 6 105 10
    27A     28   7.7 12 18 4.4
    23A     28   10 12 33 7.5
  BLR154 504     35   14.3 15 40 13.2
  BLR121 BLR121     37 27 16 15 40 16.1
  BLR122 412     51 27 16 22.5 40 23.6
                     
CR17345     CR-123A   34.2   17 3 1300 16
CR-P2     CR-P2   36 34 19.5 6 1300 37
2CR5     2CR5   45 34 17 6 1300 37
4LR61     4LR61   48.3 35.6 9 6 1300 37

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