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Watch battery · rechargeable

MT920 battery

MT920. 9.51 × 2 mm1 rechargeable, 1.5 V1. 147 calibres, modules and models in our base take it. Rechargeable: replace it only with the same type.

Sources checked · How we source numbers
MT920: drawing to scaleMT920: diameter 9.5 mm, height 2 mm.Ø 9.5−+2MT920
MT920: 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
1.5 V1
IEC designation
not listed

MT920 equivalents

Our sources list MT920 under its maker's code only; a rechargeable cell has no primary equivalent.

Code systemMT920rechargeable
PanasonicMT9201

Size and chemistry

Diameter
9.5 mm1
Height
2 mm1
Nominal voltage
1.5 V1
Chemistry
Coin-type Manganese 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 MT920 at true size (1:1)
1:1 · not calibrated: sizes are approximate
MT920: drawing to scaleMT920: diameter 9.5 mm, height 2 mm.Ø 9.5−+2MT920
01020304050

What uses MT920

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

Movements3

Also: Citizen E820 (Eco-Drive)

Citizen models135[2]

On 10 calibres, from Citizen's battery table.

  • B61250 models
  • B62048 models
  • B6429 models
  • B6907 models
  • B8776 models
  • E8204 models
  • B7403 models
  • B8733 models
All 10 calibres
  • E8213 models
  • C6602 models
The 135 model numbers

BJ2167-03E · BJ2168-01E · BJ2169-08E · BJ7000-52E · BJ7004-43H · BJ7128-08E · BJ7129-05E · BJ7137-07E · BJ7144-52L · BJ8050-08E · BJ8057-09X · BJ8058-06L · BL5250-02L · BL5403-03X · BL5550-50X · BL5558-15H · BL5558-58L · BL5566-50E · BL5568-54L · BV1086-03W · BV1088-08W · BV1089-05W · BV1130-03W · BV1132-08W · BV1132-16W · BV1140-00W · CA0291-59E · CA0295-58E · CA0297-52W · CA0299-57E · CA0422-01E · CA0426-51E · CA0429-53W · CA0430-54M · CA0438-52E · CA0459-79L · CA0459-79X · CA0621-05L · CA0641-32X · CA0648-09L · CA0649-06X · CA0649-14E · CA0696-57H · CA0699-59X · CA0710-58L · CA0736-54A · CA0752-58L · CA0752-66P · CA0755-68E · CA0760-17W · CA0761-06W · CA0764-08W · CA0766-02W · CA0768-07W · CA0769-04W · CA0770-56X · CA0770-72L · CA0775-01E · CA0775-52E · CA0775-52F · CA0775-52X · CA0775-87E · CA0780-52E · CA0781-50L · CA0790-59L · CA0797-50E · CA0805-53X · CA0820-50X · CA0825-05A · CA0850-59L · CA0851-05X · CA0851-56X · CA0858-57E · CA0870-43W · CA4150-67E · CA4184-81E · CA4188-81A · CA4213-18L · CA4219-03W · CA4281-00W · CA4282-82E · CA4285-68E · CA4288-86L · CA4377-53H · CA4477-08X · CA4478-56L · CA4488-52X · CA4489-50E · CA4500-08X · CA4500-91E · CA4503-00L · CA4505-21X · CA4510-55L · CA4512-50E · CA4516-59A · CA4540-54A · CA4542-59X · CA4553-01E · CA4555-81E · CA4557-01L · CA4560-81L · CA4561-89E · CA4567-82H · CA4580-50E · CA4582-54E · CA4583-01E · CA4590-81E · CA4590-81X · CA4592-85A · CA4593-15A · CA4600-89A · CA4600-89E · CA4600-89X · CA4605-85L · CA4610-85A · CA4610-85M · CA4610-85Z · CA4660-61A · CA4664-60W · CA4664-60X · CA4680-55L · CA4684-54X · CA7022-87E · CA7028-81E · CA7028-81L · CA7058-55E · CA7064-52E · CA7090-52A · CA7090-52E · CA7090-52L · CA7090-52X · FB3002-53P · FB3002-61E · JR4061-00F · JR4068-01E

Watches with a page2

Cell types in this size

MT920

Rechargeable · Coin-type Manganese Titanium Rechargeable Lithium Batteries1

1 code in our sources names this cell type.

Capacity by manufacturer

Panasonic MT920MT920

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

Can I use another cell instead of MT920?

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

Check any other pair

  • Use instead of MT920

    CTL920F

    No

    No: CTL920F and MT920 are different rechargeable systems.

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

    CTL920F: 9.5 mm3 × 2 mm3, 2.3 V3

    Draw both cells in the swap checker

  • Use instead of MT920

    TS920E

    No

    No: TS920E and MT920 are different rechargeable systems.

    MT920 is manganese-titanium rechargeable, 1.5 V; TS920E is rechargeable, 1.5 V. Use the type printed on the old cell or in the maker's table.

    TS920E: 9.5 mm4 × 2 mm4, 1.5 V4

    Draw both cells in the swap checker

  • Use instead of MT920

    SR920SW

    Never

    Never: MT920 is rechargeable, SR920SW is not.

    MT920 is a manganese-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 mm6 × 2.05 mm6 Sources disagree: manufacturer 2.05 mm / secondary source 2 mm7, 1.55 V6

    Draw both cells in the swap checker

Warnings from the makers

Do not mix cells

“Avoid mixed use of batteries, i.e. new, used or different types.”[5]

Questions

Can I replace MT920 with a regular battery?

No. MT920 is a manganese-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 MT920 battery?

In our base: 135 Citizen models; movements such as Citizen B612 (Eco-Drive chronograph), Citizen B620 (Eco-Drive chronograph), Citizen E820 (Eco-Drive). 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. — MT920 datasheet (EN) · pdf · read
  2. 2Citizen Watch US — Battery Information (model / caliber / battery table) · html · read
  3. 3Panasonic Energy Co., Ltd. — CTL920F datasheet (EN) · pdf · read
  4. 4Seiko Instruments Inc. (SII) — Micro Battery catalogue, MicroBattery_E (rev05, file dated 2023-03-30) · pdf · read
  5. 5Panasonic Industrial Devices / Energy — Safety Warnings and Precautions (coin and cylindrical lithium batteries) · pdf · read