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Watch battery · rechargeable

CTL920F battery

CTL920F. 9.51 × 2 mm1 rechargeable, 2.3 V1. 32 calibres, modules and models in our base take it. Rechargeable: replace it only with the same type.

Sources checked · How we source numbers
CTL920F: drawing to scaleCTL920F: diameter 9.5 mm, height 2 mm.Ø 9.5−+2CTL920F
CTL920F: face and edge view to scale, from the datasheet sizesDrawing from data, not a photo · mm
Diameter
9.5 mm1
Height
2 mm1
Nominal voltage
2.3 V1
IEC designation
not listed

CTL920F equivalents

Our sources list CTL920F under its maker's code only; a rechargeable cell has no primary equivalent.

Code systemCTL920Frechargeable
PanasonicCTL920F1

Size and chemistry

Diameter
9.5 mm1
Height
2 mm1
Nominal voltage
2.3 V1
Chemistry
Coin-type Cobalt Titanium Rechargeable Lithium Batteries1
IEC designation
not listed
2CTL920F2MT9202TS920E
Every 9.5 mm rechargeable size with a page, edge view to scale. Only the height tells them apart.
Show CTL920F at true size (1:1)
1:1 · not calibrated: sizes are approximate
CTL920F: drawing to scaleCTL920F: diameter 9.5 mm, height 2 mm.Ø 9.5−+2CTL920F
01020304050

Cell types in this size

CTL920F

Rechargeable · Coin-type Cobalt Titanium Rechargeable Lithium Batteries1

1 code in our sources names this cell type.

Capacity by manufacturer

Panasonic CTL920FCTL920F

7.7 mAh1footnote *1: based on standard drain and cut-off voltage (see datasheet)Datasheet ↗

Can I use another cell instead of CTL920F?

Verdicts follow our swap rules from the datasheet size, voltage and cell type.

Check any other pair

  • Use instead of CTL920F

    MT920

    No

    No: MT920 and CTL920F are different rechargeable systems.

    CTL920F is cobalt-titanium rechargeable, 2.3 V; MT920 is manganese-titanium rechargeable, 1.5 V. Use the type printed on the old cell or in the maker's table.

    MT920: 9.5 mm2 × 2 mm2, 1.5 V2

    Draw both cells in the swap checker

  • Use instead of CTL920F

    SR920SW

    Never

    Never: CTL920F is rechargeable, SR920SW is not.

    CTL920F is a cobalt-titanium rechargeable cell that the watch charges from its solar panel or generator. SR920SW is a primary silver oxide cell, not made to be charged. Replace it only with the same rechargeable type.

    SR920SW: 9.5 mm3 × 2.05 mm3 Sources disagree: manufacturer 2.05 mm / secondary source 2 mm4, 1.55 V3

    Draw both cells in the swap checker

What uses CTL920F

32 calibres, modules and models in our base name this size.

Movements1

Also: Citizen U680 (Eco-Drive, radio-controlled)

Citizen models24[5]

On 8 calibres, from Citizen's battery table.

  • U68014 models
  • E2102 models
  • E2702 models
  • J2502 models
  • J2801 model
  • J2901 model
  • J2101 model
  • G9101 model
The 24 model numbers

AV0081-51X · AV0088-01L · AV3006-09E · AV3006-50H · BN2029-01E · BN2038-01L · BN4065-07L · BN5058-07E · BN7020-17E · BZ0016-50E · JY8030-83E · JY8035-04E · JY8075-51E · JY8078-01L · JY8078-52L · JY8084-09H · JY8108-53E · JY8120-58E · JY8125-54L · JY8127-59E · JY8147-01X · JY8148-08L · JY8149-05E · JY8156-00L

Watches with a page2

Warnings from the makers

Do not mix cells

“Avoid mixed use of batteries, i.e. new, used or different types.”[6]

Questions

Can I replace CTL920F with a regular battery?

No. CTL920F is a cobalt-titanium rechargeable cell that the watch charges from its solar panel or generator. SR920SW is a primary silver oxide cell, not made to be charged. Replace it only with the same rechargeable type.

What watches use the CTL920F battery?

In our base: 24 Citizen models; movements such as Citizen U680 (Eco-Drive, radio-controlled). The full lists are on this page, with the brand tables they come from.

Sources

Documents checked · Report a wrong number

  1. 1Panasonic Energy Co., Ltd. — CTL920F datasheet (EN) · pdf · read
  2. 2Panasonic Energy Co., Ltd. — MT920 datasheet (EN) · pdf · read
  3. 3Murata Manufacturing Co., Ltd. — Watch Battery Selection Guide / Cross Reference (1 page) · pdf · read
  4. 4WatchBattery (UK) Ltd — Watch Battery Cross Reference Table · html · read
  5. 5Citizen Watch US — Battery Information (model / caliber / battery table) · html · read
  6. 6Panasonic Industrial Devices / Energy — Safety Warnings and Precautions (coin and cylindrical lithium batteries) · pdf · read