--- product_id: 9442028 title: "387S Low-Drain 1.55V Silver-Oxide Button Cell Battery" brand: "energizer" price: "COP 61120" currency: COP in_stock: true reviews_count: 13 category: "Energizer" url: https://www.desertcart.co/products/9442028-387s-low-drain-1-55v-silver-oxide-button-cell-battery store_origin: CO region: Colombia --- # 60mAh long-lasting capacity 1.55V stable power Compact 11.6mm diameter 387S Low-Drain 1.55V Silver-Oxide Button Cell Battery **Brand:** energizer **Price:** COP 61120 **Availability:** ✅ In Stock ## Summary > ⚡ Power your timeless essentials with precision and endurance! ## Quick Answers - **What is this?** 387S Low-Drain 1.55V Silver-Oxide Button Cell Battery by energizer - **How much does it cost?** COP 61120 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/9442028-387s-low-drain-1-55v-silver-oxide-button-cell-battery) ## Best For - energizer enthusiasts ## Why This Product - Trusted energizer brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Featherlight Power:** Ultra-lightweight at just 9 grams, designed for delicate electronics without bulk - • **Silver Oxide Chemistry:** High-energy density ensures consistent voltage and superior performance - • **Lifetime Limited Warranty:** Confidence backed by Energizer’s trusted warranty for peace of mind - • **Endurance that Keeps You Moving:** Reliable 600+ hours of continuous low-drain power for your essential devices - • **Precision Fit for Vintage & Modern:** Perfect replacement for Rayovac RW51 and fits tricky legacy watches like Accutron ## Overview The Energizer 387S is a 1.55V silver-oxide button cell battery delivering 60mAh capacity and approximately 600 hours of reliable power. Compact and lightweight, it’s engineered for low-drain devices like watches, calculators, and cameras, replacing Rayovac RW51 models. Backed by a lifetime limited warranty, it’s the go-to choice for professionals seeking dependable, long-lasting energy in a sleek form factor. ## Description Product description Energizer Silver Oxide Watch Battery For Energizer 387 Button Cell desertcart.com Designed for use in continuous, low-drain applications such as photography equipment, pagers, and calculators, Energizer's 387S button cell battery offers endurance and reliability. The 1.55-volt, silver-oxide battery is rated for approximately 600 hours' use, and its average capacity is 60 mAh to 1.3 volts. The battery measures 11.6 mm in diameter (.457 inches) and stands 3.6 mm (.42 inches) thick. This battery replaces the Rayovac model RW51. Review: The Right Battery for a Tricky Application - Battery worked perfectly with an Accutron Space View 214 Review: Bought to replace a battery in a 1960's Accutron - My Dad has an Accutron watch that my Mom bought for him back in the 1960's. He hasn't been able to find a battery that would replace the one he put in back in the early 2000's. After some research, I found this battery and it came with the spacer ring needed to retro fit into his Accutron. A little slow on shipping, but I expected it with all that is going on right now. Works perfectly and very reasonably priced. ## Features - Silver Oxide button cell battery delivers high-energy density, endurance and reliability - Replaces Rayovac RW51 - 1.5 volts and 60mAh - Weighs .01 pounds and is designed especially for use in cameras, calculators, watches and other demanding equipment - Lifetime limited warranty ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00006G9SE | | Amperage | 1.5 A | | Antenna Location | Watch | | Battery Capacity | 60 milliamp_hours | | Battery Cell Composition | Silver Oxide | | Battery Cell Type | Silver Oxide | | Best Sellers Rank | #100,413 in Health & Household ( See Top 100 in Health & Household ) #582 in Coin & Button Cell Batteries | | Brand | Energizer | | Customer Reviews | 4.5 out of 5 stars 434 Reviews | | Global Trade Identification Number | 00039800064554 | | Included Components | Battery | | Item Dimensions | 2 x 1 x 0.1 inches | | Item Weight | 9.07 g | | Manufacturer | Energizer | | Model Number | 387S | | Number of Batteries | 1 Product Specific batteries required. (included) | | Recommended Uses For Product | Watch | | Reusability | Single Use | | UPC | 039800110916 039800064554 | | Unit Count | 1 Count | | Voltage | 1.55 volts | ## Product Details - **Battery Capacity:** 60 Milliamp Hours - **Battery Cell Composition:** Silver Oxide - **Brand:** Energizer - **Number of Batteries:** 1 Product Specific batteries required. (included) - **Recommended Uses For Product:** Watch ## Images ![387S Low-Drain 1.55V Silver-Oxide Button Cell Battery - Image 1](https://m.media-amazon.com/images/I/61XwxhxIe-L.jpg) ## Questions & Answers **Q: Is this the correct battery for a Pentax Spotmatic2? Present has no marking.** A: Yes, the energizer 387S is the recommended replacement battery for your camera. "Users of the Spotmatic, Spotmatic II (SPII), Spotmatic IIa, SP500, and SP1000 will be able to replace their batteries with a 1.5volt Silver-Oxide battery". It a on-line order item. You can also use the 1.5v Energizer 389 and you should be able to buy the 389 at local shops. **Q: Has anyone tried this in an asahi pentax sp500?** A: I use this battery in a 1970 Bulova Accutron watch but according to google you can use it in your camera as well. I copied the following from a google query: Buy Energizer 387S Low-Drain 1.55V Silver-Oxide Button Cell Battery on ... It fits my Pentax Spotmatic SP500 film camera perfectly (no O-ring required). **Q: Would this battery work on the Bulova Perfectionist c977745 watch?** A: It worked on my bulova space view (internal tuning fork) watch. Not sure if this will help you, but it might **Q: Would this battery work for a honeywell pentax sp1000?** A: Dont’t know.It also didn’t work in what I ordered it for but too much hassle to return it for is value ## Customer Reviews ### ⭐⭐⭐⭐⭐ The Right Battery for a Tricky Application *by B***G on December 14, 2025* Battery worked perfectly with an Accutron Space View 214 ### ⭐⭐⭐⭐⭐ Bought to replace a battery in a 1960's Accutron *by J***T on April 23, 2020* My Dad has an Accutron watch that my Mom bought for him back in the 1960's. He hasn't been able to find a battery that would replace the one he put in back in the early 2000's. After some research, I found this battery and it came with the spacer ring needed to retro fit into his Accutron. A little slow on shipping, but I expected it with all that is going on right now. Works perfectly and very reasonably priced. ### ⭐⭐⭐⭐⭐ They work on my Grandfathers Pentax Spotmatic *by B***E on September 18, 2024* What's to dislike!!! They work and at a GOOD price !!! ## Frequently Bought Together - Energizer 387S Low-Drain 1.55V Silver-Oxide Button Cell Battery - #344 Renata Watch Batteries 2Pcs - Energizer 344 / 350 Silver Oxide Watch 1 Battery --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co/products/9442028-387s-low-drain-1-55v-silver-oxide-button-cell-battery](https://www.desertcart.co/products/9442028-387s-low-drain-1-55v-silver-oxide-button-cell-battery) --- *Product available on Desertcart Colombia* *Store origin: CO* *Last updated: 2026-09-01*