not to scale.
Name.
Length × Diameter.
Contacts: "Pips" either end.
OR
Flat Base Positive
"Pip" Negative.
(2.7 volts for Mercury original types).
Contacts: Snap connectors either end.
Some sources list the IEC 2LR50 as one of these two, slightly different batteries, others list it as the other:
One of them has flat pads at opposite ends for the connection (A132), the other uses small snaps, 1 at either end.
I think the confusion arises because they are both out of general production but are made by smaller companies using 2 × LR50 cells. Possibly one is the closest that that particular company gets to the other, Look at the details and decide which is the best fitment for your application.
Equivalents:
A132: (flat ends)
1200A, 2LR50, 2MR50, 2NR50, A132, E132, EN132A, E132N, EPX132, H132R, H-2P, H-2P/A, PC132A, TR132, TR132R, TR132T,
532: (snap connectors)
1308AP, 2LR50, 532, A24PX, EPX24, PX24, RPX24, U24PX, V24PX,
| Image not to scale. | Common Name. | Dimensions. Length × Diameter. | Chemical Composition. | Nominal Voltage. |
|---|---|---|---|---|
|
| A132. | 32 mm × 16.8 mm Contacts: "Pips" either end. | Alkaline. | 3 volts, (2.7 volts for Mercury original types). |
|
| 532. | 42.4 mm × 16.8 mm Contacts: Snap connectors either end. |
Replace an A132:
A 123 Lithium battery may be used in place of the A132 if the battery compartment allows (123 is slightly (2 mm) longer and 0.4 mm fatter), but check polarity and fit as the A132 has a NEGATIVE pip whereas the 123 has a POSITIVE pip.
Or you can use 2× LR50, stacked with electricians tape to hold them together.
Replace a 532 (PX27):
See: Jim's Polaroid Camera Collection, How I made a No. 532 battery replacement for details on how to make a lithium version of the 532 with snaps from an old 532 and a CR-P2.