--- product_id: 224193490 title: "EEMB Battery Set - 4pcs 3.7V 120mAh Battery with for Watch, Toy, Remote Control, and Electronic Devices" brand: "eemb" price: "¥579" currency: JPY in_stock: false reviews_count: 13 url: https://www.desertcart.jp/products/224193490-eemb-battery-set-4pcs-3-7v-120mah-battery-with-watch store_origin: JP region: Japan --- # 3.7V high output voltage 120mAh rechargeable capacity 2-hour fast charge time EEMB Battery Set - 4pcs 3.7V 120mAh Battery with for Watch, Toy, Remote Control, and Electronic Devices **Brand:** eemb **Price:** ¥579 **Availability:** ❌ Out of Stock ## Summary > 🔋 Power your smart life with precision and speed! ## Quick Answers - **What is this?** EEMB Battery Set - 4pcs 3.7V 120mAh Battery with for Watch, Toy, Remote Control, and Electronic Devices by eemb - **How much does it cost?** ¥579 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/224193490-eemb-battery-set-4pcs-3-7v-120mah-battery-with-watch) ## Best For - eemb enthusiasts ## Why This Product - Trusted eemb brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Power Up Fast:** Recharge fully in just 2 hours to keep your devices running without downtime. - • **Certified Safety:** UL & IEC 62133 certified for peace of mind in every charge cycle. - • **Compact & Lightweight:** Sleek 24.5mm diameter and 5.3g weight fits seamlessly into your tech essentials. - • **Dedicated Charger Only:** Optimized charging with EEMB’s exclusive charger ensures battery longevity and safety. - • **Versatile Compatibility:** Perfect for home automation sensors, solar flashlights, remotes, and more—stay powered everywhere. ## Overview The EEMB LIR2450 is a UL-certified 3.7V lithium-ion rechargeable coin cell battery with 120mAh capacity, designed for reliable, fast charging in just 2 hours. Its compact size and lightweight design make it ideal for powering home automation devices, solar flashlights, and remotes, while exclusive charger compatibility ensures optimal safety and performance. ## Description desertcart.com: EEMB LIR2450 Rechargeable Battery 2450 Li-ion Battery Charger with 3.7V 120mAh Lithium-ion Coin Cell Battery : Health & Household Review: Surprisingly good - These actually work. Battery capacity is less than regular Alkaline batteries, but readability helps a lot. Charger feels a bit flimsy, but does the job. Overall, good product to use with some home automation battery-powered switches or sensors. Review: Quality kit. - Good product. Time will tell if the batteries hold up. My last purchase. From another maker had the batteries developed a leak and oxidized in less than a year. I like that the product has everything I need for my home automation motion detector batteries. ## Features - BASIC INFO—VOLTAGE: 3.7V; Capacity: 120mAh; Weight: approximate 5.3g; Diameter: 24.5mm, Height: 5.0mm. ！！! SPECIAL NOTICE—Charge the battery ONLY with EEMB dedicated charger. - CERTIFICATIONS—Safety test by UL: IEC 62133. More than 400 EEMB battery models are UL certified. Search "MH20555" on UL for all EEMB UL certification information. - QUALITY SERVICE—We take pride in providing the highest levels of customer satisfaction, and we have over 20 years of experience in the lithium battery industry. Please contact us if you have any questions about the product via desertcart message. We will get back to you promptly. - WARNING—Do not overlap or mix batteries in a disorderly way. If the positive and the negative terminals touch each other, it will cause SHORT CIRCUIT or EXPLOSIONS! Please keep out of reach of children. Do NOT SWALLOW. STORAGE—Keep the cells in a 40%-60% charged state during a long period of unused period. We recommend charging the battery every three months upon receipt to maintain the voltage. Store the battery in a cool and dry place. - !!!SPECIAL NOTICE—The battery may not be suitable for some LED candles and tea light. APPLICATION—May be suitable for solar flashlight, sensor, solar welding helmet, and other electronic products. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08CRCL42T | | Battery Charge Time | 2 Hours | | Best Sellers Rank | #262,895 in Health & Household ( See Top 100 in Health & Household ) #1,326 in Coin & Button Cell Batteries | | Brand | EEMB | | Color | Black, Silver | | Compatible Devices | Led Candles, Remote, Remotes, Solar, Torch, Toy, Watch | | Customer Reviews | 4.2 out of 5 stars 227 Reviews | | Input Voltage | 3.7 Volts | | Item Dimensions D x W x H | 0.2"D x 0.96"W x 0.2"H | | Item Weight | 5.3 Grams | | Manufacturer | EEMB Co.,Ltd | | Mfr Part Number | LIR2450 | | Model Number | LIR2450 | | Number of Ports | 2 | | Output Voltage | 3.7 Volts | | Product Dimensions | 0.2"D x 0.96"W x 0.2"H | | Specification Met | UL, IEC 62133 | ## Product Details - **Brand:** EEMB - **Color:** Black, Silver - **Item Weight:** 5.3 Grams - **Output Voltage:** 3.7 Volts - **Product Dimensions:** 0.2"D x 0.96"W x 0.2"H ## Images ![EEMB Battery Set - 4pcs 3.7V 120mAh Battery with for Watch, Toy, Remote Control, and Electronic Devices - Image 1](https://m.media-amazon.com/images/I/617ewLWN9EL.jpg) ## Questions & Answers **Q: Can the same charger be used for both rechargeable 2032 and 2450 batteries?** A: I think so. I found that the rechargeable batteries really just don't last long enough to make them worth while. **Q: why is the voltage higher than typical for this battery type (3v vs 3.7)?** A: Because it uses a different chemistry than the non rechargeable coin cell batteries. The voltage of a battery is dictated by its chemical content. If they had used nickel cadmium for example, the voltage would have been 1.2v. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Surprisingly good *by D***V on June 6, 2026* These actually work. Battery capacity is less than regular Alkaline batteries, but readability helps a lot. Charger feels a bit flimsy, but does the job. Overall, good product to use with some home automation battery-powered switches or sensors. ### ⭐⭐⭐⭐⭐ Quality kit. *by O***D on April 24, 2026* Good product. Time will tell if the batteries hold up. My last purchase. From another maker had the batteries developed a leak and oxidized in less than a year. I like that the product has everything I need for my home automation motion detector batteries. ### ⭐⭐⭐⭐⭐ Great item, great price *by A***A on August 18, 2025* This was a hail Mary to fix my 400 dollar helmet for welding, not only fixed my issue but provided a reliable solution. This company helped me out when I even had problems and were fast to reply. I will be buying more from this company. ## Frequently Bought Together - EEMB LIR2450 Rechargeable Battery 2450 Li-ion Battery Charger with 3.7V 120mAh Lithium-ion Coin Cell Battery - EEMB 3.7V Rechargeable 2032H Batteries LIR2032H Lithium-ion Coin Cell Button Batteries 70mAh for Car Remote Key Fob Watch - 4PACK - EEMB 4PCS LIR2025 Rechargeable Battery 3.7V Lithium-ion Coin Button Cell Batteries 40mAh --- ## 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.jp/products/224193490-eemb-battery-set-4pcs-3-7v-120mah-battery-with-watch](https://www.desertcart.jp/products/224193490-eemb-battery-set-4pcs-3-7v-120mah-battery-with-watch) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-12*