Seiko 5M42 Replacement Battery

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Battery compatible with Seiko 5M43 5M45 5M62 5M63 5M65 battery (not an original SEIKO battery).

Battery for SEIKO 5M42 Coin Cell battery replica with and capacity.

The high quality replica battery with capacity, Smart Watch Batteries. It fits in the Seiko 5M43 5M45 5M62 5M63 5M65 models.

Usually the installation of this battery in connection with the phone requires extra hands-on skills, we recommend that you have the Seiko 5M43 5M45 5M62 5M63 5M65 battery installed by an expert.

This battery is suitable as a replacement battery for Seiko 5M43 5M45 5M62 5M63 5M65 battery and SEIKO 5M42 model.

High capacity SEIKO 5M42 battery for longer standby time.

The battery is professionally tested to ensure the best lifespan.

1 year warranty, 30 days money back, 100% brand new!

Battery capacity (mAh/A/W) may be different; the more mAh/A/W it displays, the higher its autonomy.

Safety certified CE / FCC / RoHS.

* Please make sure that the replacement battery you are buying is suitable for your device brand and model.

SEIKO 5M42 Battery Technical Specifications		3
Model	5M42
Battery Condition	Brand New Replacement Battery
Item Code	ECN12779_Oth
Category	Smart Watch Batteries
Brand	SEIKO
Capacity
Voltage
Type	Coin Cell
Color	Silver
Applies to	Seiko 5M43 5M45 5M62 5M63 5M65
Certification	Passed CE, UL, ROHS, ISO 9001/9002 and GS certification
Service	Buy now, we promise a one-year warranty and 30-day returns

Replacement Part Numbers:

Compatible Models：

MT920 3023-5MY Kinetic Watch Capacitor Battery for Seiko 5M43 5M45 5M62 5M63 5M65

MT920 30235-5MZ Kinetic Watch Capacitor Battery for Seiko 5M42 5M43 5M45 5M47 5M22 5M23

MT920 battery with optional parts (clamp and insulator)
Replaces the old battery types: SL920 and TC920S
Suitable for Seiko Kinetic Watch Movements
Movement Numbers:
5M22
5M23
5M25
5M42
5M43
5M45
5M47
5M54
5M62
5M63
5M65
5S22
7M22
YT52
YT57
YT58

More MT920 3023-5MY 5M22 From Other Stores:

Battery For 5M42

SEIKO 5M42 Battery Our Guarantee

-- 30 days money back, 12 months warranty.

-- 30% off and free shipping

-- 100% compatible Seiko 5M43 5M45 5M62 5M63 5M65

Product Features:

✅ 100% compatible with original equipment — easy installation and stable performance.

✅ Built-in overvoltage protection circuit to prevent damage to your device.

✅ Strictly tested during production to ensure top performance and reliability.

✅ Perfect replacement for the original part — same fit, same function.

Why order batteries from us?

① Expert in the field of batteries for 15 years.

② Large selection, almost all available products are in stock.

③ Tested and checked by competent professionals, careful packaging.

④ Best prices & fast delivery & One year warranty & Safe purchase and payment.

⑤ Perfect after-sales service.

Delivery

All items come with free shipping, with no minimum order required.

Standard delivery orders for in-stock items will be dispatched within 1–2 business days.
Tracking information will be available the day after shipment. Customers will receive an email with the tracking number.
Delivery typically takes 7–20 business days, depending on the destination.
Public holidays and customs inspections may cause postal delays.
We do not ship to APO or FPO addresses.
We are not responsible for incorrect or undeliverable addresses. Please ensure your shipping details are accurate and complete.

Methods of payment

Paypal

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It's a fast and secure way for customers to pay online via all major debit and credit cards, online bank transfers and via PayPal account holder payments. Customers don't even need a PayPal account to pay with PayPal.

Guarantee

Quality and safety: This SEIKO 5M42 battery contains advanced electronic components and has been tested according to strict CE standards. The SEIKO 5M42 battery contains a chip that prevents overcharging and short circuiting. On top of that the SEIKO 5M42 batteries are made from good quality cells which do not suffer from a 'memory effect'.

Assurance and warranty: SEIKO 5M42 purchased in our store are guaranteed for 12 months. Satisfied Refunded 30 days.

Shipped Direct from the Factory: Shopbatterypc.com ships its items almost directly from the factory, so you are sure to receive a brand new, full capacity battery! and Minimize your cost and get incredible low factory price.

Secure payment: Your credit card details are encrypted using the SSL (Secure Socket Layer) protocol and are never transmitted unencrypted over the network.

Battery FAQs

1. Can I use this SEIKO 5M42 battery with any device?: This battery is designed for specific models. Please check the compatibility list before purchasing.
2. How long does the battery last on a full charge?: Battery life varies depending on usage and device settings. On average, it provides 6–10 hours of continuous use.
3. Is it safe to leave the battery charging overnight?: While the battery has built-in protection, we recommend unplugging it once fully charged to extend its lifespan.
4. What should I do if the SEIKO 5M42 battery gets hot?: Stop using the device immediately and allow the battery to cool down. Avoid charging in direct sunlight or near heat sources.
5. How do I dispose of the battery?: Please follow local recycling guidelines. Do not throw batteries in household waste, as they may harm the environment.

Tips for using your battery safely

Use the correct charger — Always use the charger recommended by the manufacturer to avoid overheating or damage.
Avoid overcharging — Disconnect the battery once fully charged to extend its lifespan.
Keep away from extreme temperatures — Do not expose the battery to direct sunlight, fire, or freezing conditions.
Protect from moisture — Keep the battery dry and avoid contact with water or other liquids.
Do not disassemble or puncture — Tampering with the battery may cause leakage, fire, or explosion.
Dispose responsibly — Follow local regulations for battery recycling or disposal to protect the environment.

SEIKO 5M42 | Smart Watch Batteries

Seiko MT920 3023-5MY 5M22 Replacement Battery For Seiko 5M43 5M45 5M62 5M63 5M65 Free Shipping

5M42 Batteries are also suitable for:

SEIKO 5M42 Battery Technical Specifications