Highfields Amateur Radio Club
Glossary of Radio Terms.

Appendix:
Battery Details.

This battery hass caused me a few headaches! The coding between the spring contact and the screw contact are mixed depending on which manufacturer you look at so I have put them both together on this page.

There are several rechargeable types for this battery. Take care if purchasing one as I've seen 3 main types:
1: Uses 4 × "D" cells giving 4.8 volts at 4400 mAh.
2: Claims a full 6 volts but has no information on the internal make-up (that I can find).
3: Has an integral charger, the battery just plugs into the wall (shown bottom left). The plug takes nearly half of the body away and the charging circuitry will, obviously, take up space and lower the capacity of the battery, which is listed at 2000 mAh, although no voltage is quoted.

Also available is a converter that takes 4 × "D" cells (shown bottom right) for you to put your own batteries in. I have only ever seen the rechargeables and converter with spring contacts.

Used to usually be made with 4 × "F" primary cells in series, some cheaper versions now use 4 × "D" cells in series.

Equivalents:

Image not to scale.	Common Name.	Dimensions. Height × Width × Length.	Chemical Composition.	Nominal Voltage.
	Lantern (Spring).	110 mm × 67 mm × 67 mm Contacts: Spring terminals. Positive toward one corner. Negitive in the centre.	Zinc Chloride,	6 volts.
	Lantern (Screw).	As above but with Screw Post contacts, not spring.	As above.	6 volts.