AAA
An AAA is a shape, not a specification. 7 designations share it here, running 500 to 1250 mAh, a spread of 2.5 times, and they do not all deliver the same voltage: 1.2 V and 1.5 V.
| Cell | Envelope | Volts | Chemistry | Energizer |
|---|---|---|---|---|
| LR03 | 10.5 x 44.5 mm | 1.5 V | alkaline | Listed |
| R03 | 10.5 x 44.5 mm | 1.5 V | carbon zinc | Listed |
| HR03 | 10.5 x 44.5 mm | 1.2 V | nickel-metal hydride | Listed |
| FR03 | 10.5 x 44.5 mm | 1.5 V | lithium | Listed |
| 3-312 | 10.3 x 42.8 mm | 1.5 V | alkaline | Not listed |
| 3-312I | 10.5 x 43.3 mm | 1.5 V | alkaline | Not listed |
| 1.2H1 | 10.5 x 44.5 mm | 1.2 V | nickel-metal hydride | Not listed |
Also stamped on cells in this table: LR03, 24A, A92V, AX92, E92, E92 ALKALINE POWER, EN92, X92, XR92, A92, EP92, EPA92, R03, 24D, 1212, 24F, 912, HR03, 1.2H1, NH12-500MAH, NH12-700MAH, NH12-800MAH, HR03-1000, HR03-850, NH12-600MAH, RE12-500, FR03, 24LF, EA92, L92, 24-LF, LN92, 3-312, 3-312I, NH12-650MAH, NH12-750MAH, NH12-850MAH, NH12-900MAH.