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Seiko 3027-29N (Panasonic MT616 with special connector)

Type: Battery / Capacitor. Voltage: 1.5 V. 

Diameter: 9.5 mm. Height: 2.05 mm.

Price: 29.99 each. 29.50 each if you buy two or more.

Also known as: Seiko 3027-29N, 3027-3MY Panasonic MT616 with connector (and a bracket/clamp and spacer)

These Seiko 3027-29N devices were originally not batteries at all, but miniature capacitors. More recently however, Seiko has upgraded their specification and replaced them with minute rechargeable batteries.

This is a genuine SEIKO KINETIC MOVEMENT capacitor / battery for use in Seiko Kinetic watches.

Consisting of a Panasonic MT 616 with special connector tabs, this Seiko part 3027-29N is a replacement capacitor for the following Seiko watch movement calibres:

Seiko 3M21, 
Seiko 3M22, 
Seiko 3M62, 
Seiko 3M21A, 
Seiko 3M22A, 
Seiko 3M62A, 

The calibre is typically inscribed on the back of your watch. For example a watch might have........


inscribed on the back. The calibre, 3M22, is highlighted.

These 3027-29N MT616 with tag are almost exclusively used in Seiko Kenetic electronic watches.

You may wish to look at the excellent web page "Replacing the Capacitor on a Seiko 3M22" by Daniel N. Ravenna. This page shows the Seiko Kinetic (Caliber 3M22).

This 3027-29N MT616 with tag is the newer enhanced performance longer duration type. If you are replacing the original version based on a SL621 cell you will need to replace your clamp. Do not order this battery (which comes without a clamp). Instead click here to order our 3027-3MZ which contains a rechargeable battery unit and a rechargeable battery clamp. See here or use the 'Contact Us' link in the left hand frame for more details.

The Panasonic MT616 is a button-type titanium carbon lithium rechargeable Li-ion battery that uses lithium titanium oxide as the positive material, carbon as the negative material, and organic electrolyte.

If you don't find the movement calibre you are looking for, contact us by email. Use the 'Contact Us' link in the left hand frame.

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