Is it suitable surface Pro pen 3 ???

Yes, I purchased these for my Surface Pro 3. Two of these button cells are used for the top button to communicate via bluetooth to start OneNote. I have not had to replace these batteries yet,as the originals are still working fine. For the actual pen function an AAAA is used. Likewise I have not needed to replace the original AAAA yet and I've had my Surface Pro 3 for almost a year. Enjoy your Surface Pro 3 :)

Will they fit my Lenovo Active 2 pen??

Lenovo's lit says this is the battery for that pen

Is there an expiry date for the validity of the battery and how much the period

Yes there is a good till date on them and usually about a year

Battery ag4 code is on the battery is that 319

a size 377 battery is the equivalent of a SR626SW battery, which is also the same is a AG4 / SG4 battery.

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⏰ Power your moments with Energizer’s precision-packed watch batteries!

BULK 5 PACK VALUE - Never run out—keep your essentials stocked and ready
TRUSTED BRAND QUALITY - Energizer’s proven reliability keeps your devices ticking smoothly
ULTRA LIGHTWEIGHT DESIGN - At just 2 grams, it won’t weigh down your devices
PRECISION FIT FOR WATCHES - Designed specifically for seamless integration with watch models
RELIABLE SILVER OXIDE POWER - Ensures consistent, stable energy for your timepieces and gadgets

The Energizer Battery 319 (SR527SW) is a high-quality silver oxide battery designed for watches and small electronics. This 5-pack offers long-lasting, reliable power in a lightweight, precision-fit design from a trusted brand, ensuring your devices stay powered and accurate.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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Batteries Included	Yes
Batteries Required	Yes
Brand	Energizer
Manufacturer	Energizer
Item Model Number	4332774969
Display Type	watch accessories
Package Dimensions	13.8 x 5.6 x 0.7 cm; 2 g
Item Weight	2 Grams

Energizer Battery 319 (SR527SW) Silver Oxide Watch Batteries, Open Band On (5 Pack)

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