1/2AA - CR1/2AA Lithium 3Volt.

Do not confuse this battery with the 1/2AA size rechargables that are 1.2 volts.

Equivalents:

3.0 volt:
1/2ER6, 1/2R6, 1/2UM3, 6127, BR1/2AA, BR 1/2 AA, BR 1/2AA, BR1/2 AA, BR-1/2-AA, BR14250, CR1/2AA, CR1/2 AA, CR-1/2-AA, CR 1/2 AA, CR 1/2AA, CR14250, CR14250SE, DL1/2AAL, ECR1/2AA, LS-3, LTC-9C, TL5101/S, TL2150/S, TL-5902/S,

3.6 volt:
1/2AA, 1/2R6, 1/2UM3, ER3S, ER3S-TC, ER3V, ER14250, LS-14250, LS-14250C, SL-14250C, SL-150/S, SL-350/S, SL-750/S, TL-2150, TL-4902, TL-5101, TL-5111, TL-5151, TL-5902,

Image
not to scale. Common
Name. Dimensions.
Length × Diameter. Chemical Composition. Nominal Voltage.

1/2AA Lithium Thionyl 25.2 mm × 14.7 mm
Contacts:
Positive contact raised 'pip'.
Negative contact flat.
Lithium thionyl chloride (LiSOCl2). 3.6 volts.

CR1/2AA. 25.1 mm × 14.75 mm
Contacts:
Positive contact raised "pip".
Negative contact flat.
CAUTION: some manufacturers have the "pip" Negitive and the flat as Positive (see the Varta, left).
Lithium Manganese Dioxide (LiMnO2). 3 volts.

Image not to scale.	Common Name.	Dimensions. Length × Diameter.	Chemical Composition.	Nominal Voltage.
	1/2AA Lithium Thionyl	25.2 mm × 14.7 mm Contacts: Positive contact raised 'pip'. Negative contact flat.	Lithium thionyl chloride (LiSOCl2).	3.6 volts.
	CR1/2AA.	25.1 mm × 14.75 mm Contacts: Positive contact raised "pip". Negative contact flat. CAUTION: some manufacturers have the "pip" Negitive and the flat as Positive (see the Varta, left).	Lithium Manganese Dioxide (LiMnO2).	3 volts.

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