Highfields Amateur Radio Club
Glossary Appendix.

Battery Details.

Renata (the only maker) has ceased production of this battery (see the information letter).
I can report that Cousins UK.com have the 751 listed (their Order No. RN751) but they are expensive!
Closest size wise is the LR62 (exactly the same size) but it has the lower voltage of 1.55 volt.

Equivalents:

751, Renata 751, RT-751, XR512W,

Image not to scale.	Common Name.	Dimensions. Diameter × Thickness.	Chemical Composition.	Nominal Voltage.
	751.	5.8 mm × 1.2 mm Contacts: Case and flat side Positive. Slightly raised area Negative.	Lithium (single use).	2 volts.