Basic Round Cells

US
Size
UK H mm  D mm Mass
ZnC
Mass
Alk.
IEC1 mAH
ZnC3
mAH
Alk.
Equivalents same size & voltage
Notes.
#6 Flag 153 63.5 993 R40 Flag, BS. Three different top connection versions2
J 150 44.5 275 Not Ever Ready J (= 9V ) or Modern "flat" J
U14 109.5 51.2 Gas Lighter
G 102 32 176
F 89 32 128 R25 10000 24500
E 73 32 120
D U2 57 32 96 147 R20 Mono, MN1300, UM1, #1,14A, 14D, T373
C U11 46 25 43 71 R14 HP11, Baby,  MN1400, UM2, #2, T343
CD 81 24 91
CL 67 24 62
B U10 57 19 32 R12 2500 6100 ANSI history has smaller heights4
U8 37 21.5 25 R10 1500 3700 Used in Duplex, No. 8
BR 31 19 20 1200 3000
BF 33 19 21 1300 3200
A 49 17 16 R23 2200 5600 Today usually only as NiMH or Lithium-
AA U7 49 14 14 23 R6 1100 2700 Pen, Mignon, MN1500, UM3, #5, T316
1/2 AA 24 14.5 Usually in 3V Lithium
AAA U16 45 10.5 10.5 R03 540 1300 Micro, MN2400, UM4, #7, T286
39 7.5 5.8 LR61  – 590 6 in Alkaline PP3 =6LR61. Layer 450mAH
AAAA 42.5 7.5 6.3  >> 300 620 LR8D425, 25D, UM6, MN2500, E96
R 33 13.5 8 455 1120
N Lady 30.2 11 6 10 LR1 350 800 MN9100, 910A. (12V A23 slightly smaller)
NS 19 11 4 245 600
P 25.4 13.5 6 350 800

Notes

  1. IEC prefix for alkaline is L, thus a "Lady" cell is actually always LR1 as only Alkaline version now
  2. The 7.5V  Round 90AH Zinc Air "fencer" batteries have 5 off Zinc Air based "Flag" type cells. See also Type  "O" cell
  3. Exact capacity depends on load used and end point (1.1, 1.0 or 0.9V). Quoted capacities are for 1V to 1.1V end point approximately. Thus a B Cell capacity is higher for 10mA HT than 50mA series LT.
  4. Normally cell/battery dimensions include the terminal(s). The ANSI cell heights in some documents appear to be excluding the top connection "pip"/cap/terminal.
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