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Battery Information
Battery Details

Don't confuse these with the AAA battery as these are twice the voltage in the same sized package.
Using of one of these in place of a 1.5 volt battery could damage your equipment.

Many years ago this size of 3v battery was used as an LT power source for early hearing aids that contained valves (tubes). The newer Lithium (high current types) could be used as replacements for the old zinc types but I would avoid the low current types in this situation.

About the Lithium Chemistry:

NOTE: These Lithium types are NOT rechargeable, they are single use batteries.

• Lithium Manganese Dioxide (LiMnO2) suitable for high current drain e.g. torches and radio control uses.
  
  
• Lithium Thionyl Chloride (LiSocl2) suitable for low drain e.g. memory back-up, smoke detectors etc.
  
  Some Lithium Thionyl Chloride (LiSocl2) are "Spiral Wound" construction and are suited to high current drain (designated by the suffix "M", i.e. ER*****M).
  You can use any of the high drain types to replace a low drain LiSocl2 but don't try to replace the high drain types with a low drain LiSocl2 or explosion due to overheating could occur.

Equivalents:

CR10450, CR AAA, D22, ER10450, ER10450S, ER10450SE, V0038,

Image not to scale.	Common Name.	Dimensions. Length × Diameter.	Chemical Composition.	Nominal Voltage.
	CR AAA.	50.5 mm × 14.5 mm Contacts: Raised "pip" Positive. Flat end Negative. CAUTION: some manufacturers have the "pip" Negative and the flat as Positive! (see pic)	Lithium, (LiMnO2) (LiSocl2)	3 volts (LiMnO2), 3.6 Volts (LiSocl2).