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Seiko Capacitor 30235MZ/5MY Kinetic Battery for 5M22 5M23 5M25 5M42 5M43 -TC920S

WatchBattery Ltd
(27214)
Registered as a business seller
£19.99 each
Condition:
New
More than 10 available1,797 sold
Bulk savings quantity 1
Multi-buy:
Buy 4 or more for 17.99 each
This one's trending. 1797 have already sold.
People want this. 328 people are watching this.
Postage:
May not post to United States. Read item description or contact seller for postage options.
Located in: Swindon, United Kingdom
Delivery:
Varies
Returns:
30 days return. Buyer pays for return postage. If you use an eBay delivery label, it will be deducted from your refund amount.
Payments:
    Diners Club

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eBay item number:332859340663
Last updated on 28 Jul, 2025 16:58:10 BSTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging ...
Brand
Seiko
Type
Rechargeable coin cell
MPN
3023 5MZ
Battery Size
MT920
Country/Region of Manufacture
Indonesia
EAN
Does not apply

Item description from the seller

Seller business information

I certify that all my selling activities will comply with all EU laws and regulations.
VAT number: GB 815935217
I provide invoices with VAT separately displayed.
CRN: 05750235
Additional information:
WatchBattery (UK) Ltd. Unit 19, Star West, Westmead Drive, Swindon, Wiltshire, SN5 7SW 01793 497776
About this seller

WatchBattery Ltd

99.6% positive Feedback71K items sold

Joined Sep 2003
Registered as a business seller
WatchBattery (UK) Ltd was established in 1999. Since then it has grown from selling just watch batteries to all different types of batteries for watches to motorcycles. WatchBattery (UK) Ltd. also ...
See more

Detailed seller ratings

Average for the last 12 months
Accurate description
5.0
Reasonable postage cost
5.0
Delivery time
5.0
Communication
4.9

Seller Feedback (28,054)

All ratings
Positive
Neutral
Negative
  • d***1 (1167)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    arrived safe and sound Saturday, very well packed, fitted on Sunday, this was the fiddliest thing I have done in years, but with the help of You Tube and IFixit tools jeweler's screwdrivers don't cut it flat blades too wide, 2.5 hours later this 70-year-old finished the job and 2hours on a charger the watch is working fine with 30 seconds swing of the second hand, thank you Watch battery Ltd for your fast great service, there is still life in the old dog yet.
  • s***o (725)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Battery arrived in just two days and was exactly as described. I needed to buy a set of even smaller screwdrivers to fit it in my watch but it worked immediately once installed. A very fiddly job to do and nearly lost the tiny screws several times. Saved a lot of money over paying someone else to do it though. Thanks!
  • d***k (848)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Good battery kit. A bit fiddly to fit with the small screws but it now all works well.
See all Feedback

Product ratings and reviews

4.7
217 product ratings
  • 187 users rated this 5 out of 5 stars
  • 14 users rated this 4 out of 5 stars
  • 5 users rated this 3 out of 5 stars
  • 3 users rated this 2 out of 5 stars
  • 8 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

  • Most favourable review

    Great product needing good eyesight to fit.

    Seiko brand product for a Seiko watch cannot go wrong. The fitting was very fiddly but successful in the end. My watch is working OK so far. I would attempt fitting a capacitor again after looking at a Youtube video.

    Verified purchase: YesCondition: NewSold by: maddisonsofdurham

  • Most critical review

    Not as advertised.

    The capacitor fit perfectly. Arrived in time (like it is important). However, the battery is nowhere close to original although advertised - longer life. Ended up a few month after replacement, shaking my watch daily to get it working. Wearing through the day is not enough you have to move 24/7. Never indicated more than 10% charged life. Left watch haplessly in the drawer. What the point? Really disappointed. Will be looking for replacement elsewhere.

    Verified purchase: YesCondition: NewSold by: tedcigar

  • A new life for my Kinetic

    You do need to watch the YouTube videos to get an idea how easy this is and if you feel confident enough to do it yourself. I work on watches as hobby and with the right tools I completed the job in well under 30 mins. You do need a very good micro screwdriver with a sharp blade, a clean work area and time this is not a rush job for newbies, it is very very easy to loose the very very small screws. This kit is from Seiko and fits like a glove. My kinetic was up and running straight away so there must be some charge pre installed. Good luck...and take your time.....👍

    Verified purchase: YesCondition: NewSold by: sellingonetsy

  • Original Seiko kit - very speedy delivery

    Original Seiko battery replacement parts kit includes replacement tagged battery, fixing plate and gasket to swap out a failing Pulsar or Seiko kinetic rechargeable watch cell. You will need a steady hand, good quality jewellers flat and crosshead screwdrivers, a thin non conductive 'stick' to prevent the watch pendulum turning (trim down a match stick); tweezers AND a free standing magifying glass. You will not do this job without the latter as watch screws are smaller than pin heads. There is a step by step guide if you search Utube. This kit does not include a replacement waterproof seal or silicone for the watch back plate if you need one. Good product and glad to have my old Pulsar watch back working perfectly.

    Verified purchase: YesCondition: NewSold by: tedcigar

  • Everything needed to repair a Seiko Kinetic

    I admit I was a bit worried about taking apart my Seiko watch and replacing the damaged capacitor with this lithium battery upgrade, but after being quoted silly money by a watch repair company I thought I would have a go. All the parts required are supplied in the kit, and with the aid of a magnifying glass I removed the back of the watch and got started. It was not absolutely easy, but with a little patience anyone can do it. Once I had fitted the new parts the watch was going. I have since been on holiday for two weeks and left the watch at home. When I returned I tested the remaining charge and it was still at maximum. Absolutely brilliant product, and my old watch is back to normal again.

    Verified purchase: YesCondition: NewSold by: haldancoln