not to scale.
Name.
Length × Width × Height.
Click for larger image
Contacts:
Top Brass Strip Positive.
Lower Brass Strip (between Cells) Negative.
Was commonly used in small hand lanterns and bicycle headlights from 1950s to 1970s.
Equivalents:
2R25, 800, 900, BA 6112, No. 800, V0001, V800,
| Image not to scale. | Common Name. | Dimensions. Length × Width × Height. | Chemical Composition. | Nominal Voltage. |
|---|---|---|---|---|
Click for larger image | 800 | 70 mm × 35 mm × 100 mm Contacts: | Zinc Chloride | 3.0 volts. |
Can be replaced by 2 F cells (see below) or a suitably modified 2 × C or 2 × D cell holder (depending on room in battery compartment).
If you are feeling really adventurous and you can find a brand of Lantern battery that is packed with 4 R25 cells or a couple of "F" cells, you could make an 800 by using a couple of cardboard tubes (the cells need to be insulated from each other) a couple of brass strips and a short piece of wire.