Highfields Amateur Radio Club
Glossary Appendix.


Battery Details.

This battery is unobtainable now. See This Page from the Roberts Radio Collection website for advice on remaking one yourself.

Combined LT (1.5 volt) and HT (90 volt) dry battery for vintage portable valve (tube) equipment.

Equivalents:

503, B103, BB503, KL3, S103, L5507,

Image not to scale.	Common Name.	Dimensions. Height × Width × Length.	Chemical Composition.	Nominal Voltage.
	B103.	142 mm × 204 mm × 79 mm. Contacts: Polarity marked holes for pins.	Carbon Zinc.	1.5 & 90 volts, 200 - 350 & 7 - 15 mA.