Seiko 3023 MT920 – how to choose the right battery version?
2026-07-31Seiko batteries from the 3023 family often use the MT920 cell, but they are not a single universal part. Versions 3023.24D, 3023.24L, 3023.24M, 3023.24R, 3023.24X, and others have different applications. Below we show how to select the right variant for the watch caliber.
In Seiko Kinetic and Seiko Solar watches, there are many batteries belonging to the 3023 parts family. They are often marked with MT920 or TC920.
However, this does not mean that every 3023 part with an MT920 cell is the same. Individual variants may differ in construction, contact plates, and intended use for specific calibers.
Why does the MT920 symbol alone not suffice?
MT920 specifies the type of cell but does not identify the entire part intended for a specific watch. In practice, Seiko uses many versions based on the MT920 cell.
Therefore, when purchasing, it is best to check:
- the caliber of the mechanism,
- the full Seiko part number,
- the marking of the old battery,
- the shape and position of the contact plates.
Seiko 3023.24D – for calibers V192, V194, V195, and V198
The battery 3023.24D is intended for calibers:
V192, V194, V195, V198.
It appears in models such as Seiko:
SSC357, SSC359, SSC373, SSC375, SSC376, SSC377, SSC487, SSC489, SSC507, SSC509, SSC511, SSC549, SSC560, SSC561.
See Seiko 3023.24D at Kurant store
Seiko 3023.24L – for calibers 5D22, 5D44, and 5D88
The version 3023.24L is intended for mechanisms:
5D22, 5D22A, 5D44, 5D44A, 5D88.
See Seiko 3023.24L at Kurant store
Seiko 3023.24M – for calibers from the 7B family
The battery 3023.24M appears with calibers:
7B22, 7B24, 7B25, 7B26, 7B32, 7B37, 7B42, 7B52.
Voltage: 1.5 V.
See Seiko 3023.24M at Kurant store
Seiko 3023-24P – for 5Y75A, V121A, and V122A
The version 3023-24P is intended for calibers:
5Y75A, V121A, V122A.
Cell type: MT920.
See Seiko 3023-24P at Kurant store
Seiko 3023-24R – for 7M12, 7M22, 7M42, 4M45, and V12
The battery 3023-24R appears with calibers:
7M12, 7M22, 7M42, 4M45, V12.
Comparative markings: MT920, TC920.
See Seiko 3023-24R at Kurant store
Seiko 3023.24X – for 5J21, 5J22, 5J23, 7D46, and 7D48
The version 3023.24X is intended for calibers:
5J21, 5J22, 5J23, 5J32, 5S21, 7D46, 7D48, 7D56.
Comparative markings: MT920, TC920.
See Seiko 3023.24X at Kurant store
Seiko 3023.5MZ / 3023.5MY – for many 5M calibers
This version is intended for popular Seiko Kinetic mechanisms:
5M22, 5M23, 5M25, 5M42, 5M43, 5M45, 5M56, 5M62, 5M63, 5S22, YT52, YT57, YT58.
Comparative markings: MT920, TC920.
See Seiko 3023.5MZ / 3023.5MY at Kurant store
Seiko 3023.34U – list of compatible calibers
The version 3023.34U appears with calibers:
5K21A, SK22A, 5K22A, 5K25A, 5K2J, 5K2JA, 5K23A, V15A, V14JA, V142, V145, V157, V158, V532A, VS32A, VS3JA.
Comparative markings: MT920, TC920.
See Seiko 3023.34U at Kurant store
Seiko 3023.24H / 3023.34T
This product has the markings 3023.24H and 3023.34T. The part is intended for mechanisms from the family:
V17, V172, V174, V175, V176, V198, V198A, VS75, VS72.
Comparative markings: MT920, TC920.
Due to the presence of several markings for this item, it is advisable to compare the full symbol of the old battery before purchase.
Seiko 3023.34R – for VR42 and VR43 mechanisms
The battery 3023.34R has:
Voltage: 1.5 V
Diameter: 9.5 mm
Height: 2.05 mm
In the compatibility data, mechanisms from the VR42 and VR43 families appear. Before purchase, we recommend checking the full designation of the mechanism and the old battery.
See Seiko 3023.34R at Kurant store
Seiko 3023.24T / 3023.24Y
This item has two markings in the data: 3023.24T and 3023.24Y.
The list of calibers includes:
7L22, 5M82, 5K22, 5K25, 5K2J, V15, V14.
Comparative markings: MT920, TC920.
Due to the discrepancy in markings, we recommend checking the number of the old part before purchase.
How to identify the correct version of Seiko 3023?
It is best to start with the caliber of the mechanism. For example:
- V192 → 3023.24D,
- 5D22 → 3023.24L,
- 7B22 → 3023.24M,
- V121A → 3023-24P,
- 7M22 → 3023-24R,
- 5J22 → 3023.24X,
- 5M62 → 3023.5MZ / 3023.5MY.
This matching is much safer than purchasing any cell just because it is described as MT920.
Are 3023.24D, 3023.24L, 3023.24M, and 3023.24X interchangeable?
They should not be treated as automatically interchangeable. Individual versions are assigned to different calibers and may differ in the construction of the complete part.
MT920 vs. number 3023 – what is the difference?
MT920 refers to the type of cell, while the designation 3023.xx allows for a more precise identification of the specific part intended for certain Seiko watches.
Therefore, when purchasing, it is advisable to look for the full number, e.g., 3023.24D, rather than just the term MT920.
Complete table of Seiko batteries
If your caliber is not in this listing or the mechanism uses a different family of cells, see the complete table of Seiko Kinetic and Solar batteries.
Seiko Kinetic and Solar batteries – matching table
How to select a battery for a watch?
We have also prepared a general guide on selecting a cell based on caliber, module, and part number.
How to select a battery for a watch by caliber?
Seiko 3023 batteries at Kurant Warehouse
Kurant watchmaker's warehouse offers many versions of batteries from the Seiko 3023 family, intended for Kinetic and Solar watches. When selecting, you should be guided by the full part designation and compatibility with the mechanism caliber.