Primary cell · Lithium primary · Li/CFx · coin / button

Panasonic Energy BR1225A

0.048 Ah Li/CFx coin / button primary cell from Panasonic Energy. Every value below is read from the datasheet and keeps the conditions it was stated at; what the source does not state is marked as not stated.

Capacity: 0.048 Ah
Nominal voltage: 3 V
Energy: 0.144 Whcalculated by Lemonergy from stated values: capacity × voltage
Mass: 0.8 g
Specific energy: 180 Wh/kgcalculated by Lemonergy from stated values
Energy density: 469 Wh/Lcalculated by Lemonergy from stated values
Dimensions: Ø 12.5 × 2.5 mm
Continuous discharge: Not stated
Cycle life: Not stated
Internal resistance: Not stated
Operating temperature: -40 to 125 °C

Compare in the finder Source document Record as JSON (API)Report a correction

Not offered in Lemonergy Design, which takes lithium-ion and sodium-ion cells only.

Specifications

7 quantities stated by the datasheet, grouped as in the finder. Conditions are the rate, temperature and limits each value was stated at.

Electrical

Quantity	Value	Conditions	From the source
Nominal voltage	3 V	nominal value	Nominal voltage (V) 3page 4
Capacity	0.05 Ah	nominal valueNot stated: rate, temperature, discharge cut-off voltage	BR1225A 48 0.03 12.5 2.5 0.8 -40 ～ 125page 4

Physical

Quantity	Value	Conditions	From the source
Mass	0.8 g	typical value	BR1225A 48 0.03 12.5 2.5 0.8 -40 ～ 125page 4
Diameter	12.5 mm	none recorded	BR1225A 48 0.03 12.5 2.5 0.8 -40 ～ 125page 4
Height	2.5 mm	none recorded	BR1225A 48 0.03 12.5 2.5 0.8 -40 ～ 125page 4

Thermal and safety

Quantity	Value	Conditions	From the source
Operating temperature, min	-40 °C	minimum valueNot stated: temperature reference, direction	BR1225A 48 0.03 12.5 2.5 0.8 -40 ～ 125page 4
Operating temperature, max	125 °C	maximum valueNot stated: temperature reference, direction	BR1225A 48 0.03 12.5 2.5 0.8 -40 ～ 125page 4

Chemistry

Classified as: Lithium primary · Li/CFx
Designation: BR series primary lithium

Source and dates

Document: Panasonic Coin type Primary Lithium Batteries
Kind: datasheet
SHA-256: 1ce9b9fa72a6263f34cf2390726ddb009759c04303c1d3f39bc981473af5f343
Note: Retrieved 2026-08-16. Table-row locator quotes normalize whitespace from the PDF. Manufacturer source rechecked 2026-09-15; accepted after owner-delegated review 2026-09-16. See review/audits/2026-09-16-catalog-review.json.
Source document date: Not recorded (evidence)
Source revision: March 2026 cover; lineup tables state contents valid as of September 2022
Specification source retrieved: Not recorded (evidence)
Product lifecycle checked: Not recorded
Product release: Not researched
Date context: Source retrieval and document revision do not establish product release or current availability.
Record: contrib/cells/panasonic/br1225a.yaml

How to cite

Panasonic Energy. “Panasonic Coin type Primary Lithium Batteries”, datasheet, March 2026 cover; lineup tables state contents valid as of September 2022. https://energy.panasonic.com/dam/master/pdf/en/material/lithium/Introduction_of_coin_type_primary_lithium_batteries_EN.pdf. Values as compiled in the Lemonergy battery library, record primary_cell/panasonic/br1225a: https://lemonergy.com/data/batteries/panasonic/br1225a/

The values are CC BY 4.0; the document and the passages quoted from it belong to its publisher. All sources of the library

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