Highfields Amateur Radio Club
Glossary Appendix.

Battery Details.

Do not confuse with the 711 just because some manufacturer decided to drop the 4 from 4R25-2

Equivalents:

4LR25-2, 4LR25-24, 4R25-2, 4R25-2C, 4R25-2P, 521, 731, 918A, 918AC, 918CD, 918D, 991, 1231, Big Lantern, Double Lantern, EV31, EV131, Lantern 6V (Big), MN918, PC918, R25-2,

Image not to scale.	Common Name.	Dimensions. Height × Width × Length.	Chemical Composition.	Nominal Voltage.
	Lantern 6V (Big).	114.3 mm × 58.4 mm × 137.1 mm Contacts: Marked screw posts.	Zinc Chloride, Alkaline.	6 volts.