--- product_id: 282474582 title: "EEMB 3.7V Lipo Battery 1100mAh 603449 Rechargeable JST 2.0mm,1-Pack" brand: "eemb" price: "¥3699" currency: JPY in_stock: true reviews_count: 13 category: "Eemb" url: https://www.desertcart.jp/products/282474582-eemb-3-7v-lipo-battery-1100mah-603449-rechargeable-jst-2 store_origin: JP region: Japan --- # 3.7V stable voltage 1100mAh high capacity 800+ charge cycles & multi-protection EEMB 3.7V Lipo Battery 1100mAh 603449 Rechargeable JST 2.0mm,1-Pack **Brand:** eemb **Price:** ¥3699 **Availability:** ✅ In Stock ## Summary > 🔋 Power your tech with confidence—because second best is not an option! ## Quick Answers - **What is this?** EEMB 3.7V Lipo Battery 1100mAh 603449 Rechargeable JST 2.0mm,1-Pack by eemb - **How much does it cost?** ¥3699 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/282474582-eemb-3-7v-lipo-battery-1100mah-603449-rechargeable-jst-2) ## 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 - • **Featherlight & Compact:** At just 22g and slim dimensions, it’s the perfect power source for sleek, portable devices. - • **Long-Lasting Power Boost:** Stay unplugged longer with 1100mAh capacity that outperforms OEM batteries. - • **Versatile Tech Companion:** Ideal for Bluetooth speakers, smart home gadgets, GPS, and all your IoT essentials. - • **Built for Safety & Durability:** UL & IEC certified with overcharge, over-discharge, and short circuit protection for peace of mind. - • **Precision Fit & Secure Connection:** JST 2.0mm connector ensures seamless compatibility—no guesswork, no short circuits. ## Overview The EEMB 3.7V 1100mAh LiPo battery delivers reliable, long-lasting power in a compact 22g form factor. Featuring a precise JST 2.0mm connector and advanced safety protections, it supports 800+ recharge cycles and is UL & IEC certified for safe use across a wide range of devices including Bluetooth speakers, GPS units, and smart home systems. ## Description Buy EEMB 3.7V Lipo Battery 1100mAh 603449 Rechargeable JST 2.0mm,1-Pack: 3.7V - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Last twice as long as original battery. - I swapped this battery in place of the OEM unit and I’m genuinely impressed — it works well, and it stays charged significantly longer than what I had before. The build feels solid, the voltage holds steady, and it gives me peace of mind that I won’t be scrambling for a recharge mid-use. If you’re looking for a dependable replacement that punches above its pricing tier, this one’s a great pick. Review: good replacement battery. - I used this in a ultra-light flashlight I designed for my drone. I picked up some tiny single cell charger boards with built in low voltage cut-off to make a tiny battery pack. Worked like a champ! ## Features - Basic Info—Voltage: 3.7V; Typical capacity: 1100mAh, Min capacity: 1000mAh; Weight: approximate 22g; Size: 34.5 x 51 x 6.3mm (WxLxH). Connector: JSH-PHR-02, pin spacing 2mm, plug width 5.8mm. - Confirm 4 Factors Before Purchase — 1. Battery size; 2. Connector model; 3. Connector size; 4. Polarity – this battery is NOT universal. If polarity does not match your device, it will cause a short circuit. - Storage & Application – Store at 40%-60% charge; recharge every 3 months to maintain 3.7-4.0V. Keep in cool, dry place. Ideal for Bluetooth speakers, dash cams, keyboards, mice, smart home systems, PDAs, GPS, monitors, e-books, trackers, blood oxygen/pulse monitors, and IoT devices. - Reliable Performance –Leak-proof, cost-effective, 800+ cycles. Protection: overcharge, over-discharge, overcurrent, short circuit. Safe, durable. - Certifications – UL certified, IEC 62133-2 certified, UN38.3 compliant for safe air/sea shipping. 400+ EEMB models UL listed – search "MH20555" on UL directory for details. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08FD39Y5R | | Amperage | 22 A | | Antenna Location | Alarm, Arduino Board, Bluetooth speaker, Camera, GPS, LED Light, Radio, Remote controller, Wireless headphones, Wireless keyboard, micro controller | | Battery Capacity | 1100 milliamp_hours | | Battery Cell Composition | Lithium Polymer | | Battery Cell Type | Lithium Polymer | | Battery Weight | 22 g | | Best Sellers Rank | #83,167 in Health & Household ( See Top 100 in Health & Household ) #25 in 3.7V Batteries | | Brand | EEMB | | Customer Reviews | 4.4 out of 5 stars 1,293 Reviews | | Item Dimensions | 1.36 x 2.01 x 0.25 inches | | Item Weight | 0.03 kg | | Manufacturer | Hubei Zhongju (EEMB) Energy Power Co., Ltd | | Model Name | LP603449 with JST PHR 2.0mm Connector | | Model Number | LP603449-PCM | | Number of Batteries | 1 Lithium Polymer batteries required. | | Recommended Uses For Product | Alarm, Arduino Board, Bluetooth speaker, Camera, GPS, LED Light, Radio, Remote controller, Wireless headphones, Wireless keyboard, micro controller Recommended Uses For Product Alarm, Arduino Board, Bluetooth speaker, Camera, GPS, LED Light, Radio, Remote controller, Wireless headphones, Wireless keyboard, micro controller See more | | Reusability | Rechargeable | | Unit Count | 1 Count | | Voltage | 3.7 volts | ## Product Details - **Battery Capacity:** 1100 milliamp_hours - **Battery Cell Composition:** Lithium Polymer - **Brand:** EEMB - **Number of Batteries:** 1 Lithium Polymer batteries required. ## Images ![EEMB 3.7V Lipo Battery 1100mAh 603449 Rechargeable JST 2.0mm,1-Pack - Image 1](https://m.media-amazon.com/images/I/61G3iBkm0AL.jpg) ## Questions & Answers **Q: The box clearly states non rechargeable, are these actually rechargeable?!?!** A: I didn’t pay attention to my box but yes they are rechargeable. **Q: what's the shut off voltage?** A: 4.2 volts **Q: is the polarity of the connector reversed?** A: The polarity of the connector battery side is as you see it. Red(+) Black(-).... However... I have seen instances were the polarity of the pins on the equipment side has been reversed. A pain. You will have to verify the circuit diagram that you are connecting the battery to. **Q: Can it be used on 3 wire equipment? how to connect if yes? i am trying to use it on logitech mx master mouse.** A: 3 wire Lipo's have balancing tech/ability. These two wire batteries are not setup for that. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Last twice as long as original battery. *by T***L on October 30, 2025* I swapped this battery in place of the OEM unit and I’m genuinely impressed — it works well, and it stays charged significantly longer than what I had before. The build feels solid, the voltage holds steady, and it gives me peace of mind that I won’t be scrambling for a recharge mid-use. If you’re looking for a dependable replacement that punches above its pricing tier, this one’s a great pick. ### ⭐⭐⭐⭐⭐ good replacement battery. *by W***G on December 24, 2025* I used this in a ultra-light flashlight I designed for my drone. I picked up some tiny single cell charger boards with built in low voltage cut-off to make a tiny battery pack. Worked like a champ! ### ⭐⭐⭐⭐⭐ Rechargeable Lithium Battery *by R***H on October 10, 2024* Is as described. The JST connector is not wired for microcontrollers but RC things so be aware. ## Frequently Bought Together - EEMB Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery with Wire JST 2.0mm Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase - HiLetgo 3pcs TP4056 Type-c USB 5V 1A 18650 Lithium Battery Charger Module Charging Board with Dual Protection Functions - elechawk 10pcs Upgraded Tiny Whoop JST-PH 2.0 Male and Female Connector Cable for Battery JJRC H36 H67 Blade Inductrix E010 E013 --- ## 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/282474582-eemb-3-7v-lipo-battery-1100mah-603449-rechargeable-jst-2](https://www.desertcart.jp/products/282474582-eemb-3-7v-lipo-battery-1100mah-603449-rechargeable-jst-2) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-06*