Index / Shells / 34.2 x 61.5 mm
34.2 x 61.5 mm
3 designations carry this exact envelope and they disagree on voltage: 1.2H4 runs 1.2 V where R20 runs 1.5 V, 20.0% apart. The compartment cannot tell them apart and the circuit can. Capacity is where they part: 1.2H4 holds 2200 mAh and LR20 holds 17000, 7.7 times as much. On a shop shelf this envelope is the D size, and that name is what the packet will say.
Every cell in this shell at one scale
| Cell | Envelope | Volts | Chemistry | Energizer |
|---|---|---|---|---|
| 1.2H4 | 34.2 x 61.5 mm | 1.2 V | nickel-metal hydride | Listed |
| LR20 | 34.2 x 61.5 mm | 1.5 V | alkaline | Listed |
| R20 | 34.2 x 61.5 mm | 1.5 V | carbon zinc | Listed |
Also stamped on cells in this table: 1.2H4, NH50-2200MAH, NH50-2500MAH, LR20, 13A, A95V, E95, E95 ALKALINE POWER, EN95, X95, A95, EP95, EPA95, R20, 13D, 1250, 13F, 950, 13CD, EV150, 13C, EV50.