--- product_id: 313501981 title: "EEMB 4PACK Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery Pack with Wire JST Connector for ESP32 Development Board/Speaker- Confirm Device & Connector Polarity Before Purchase" brand: "eemb" price: "185.33 DT" currency: TND in_stock: true reviews_count: 12 category: "Eemb" url: https://www.desertcart.tn/products/313501981-eemb-4pack-lithium-polymer-battery-3-7v-1100mah-603449-lipo store_origin: TN region: Tunisia --- # 1100mAh high capacity 3.7V stable voltage JST connector precision EEMB 4PACK Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery Pack with Wire JST Connector for ESP32 Development Board/Speaker- Confirm Device & Connector Polarity Before Purchase **Brand:** eemb **Price:** 185.33 DT **Availability:** ✅ In Stock ## Summary > 🔋 Power your projects with precision and peace of mind — never get caught powerless again! ## Quick Answers - **What is this?** EEMB 4PACK Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery Pack with Wire JST Connector for ESP32 Development Board/Speaker- Confirm Device & Connector Polarity Before Purchase by eemb - **How much does it cost?** 185.33 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/313501981-eemb-4pack-lithium-polymer-battery-3-7v-1100mah-603449-lipo) ## 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 - • **Precision Fit:** JSH-PHR-02 JST connector with exact 2mm pole spacing ensures perfect polarity and zero risk of short circuits. - • **Power That Lasts:** Reliable 1100mAh capacity keeps your devices running longer without the scramble for a recharge. - • **Safe & Certified:** UN 38.3 and UL certified for peace of mind with built-in PCM protection against overcharge, discharge, and short circuits. - • **Smart Storage Tips:** Maintain battery health with recommended 40%-60% charge storage and tri-monthly top-ups for long-term reliability. - • **Lightweight & Compact:** Slim 34.5 x 51 x 6.3mm design at just 22g fits seamlessly into your ESP32 boards, speakers, and IoT gadgets. ## Overview The EEMB 4PACK Lithium Polymer Battery offers a dependable 3.7V, 1100mAh rechargeable power source with a compact 34.5 x 51 x 6.3mm form factor and lightweight 22g build. Featuring a JSH-PHR-02 JST connector with precise polarity alignment, it ensures safe, leak-free operation backed by UN 38.3 and UL certifications. Ideal for ESP32 development boards, Bluetooth speakers, and IoT devices, it includes PCM protection for overcharge, discharge, and short circuit safety, making it a trusted choice for professionals seeking reliable, long-lasting battery performance. ## Description Product description LP 603449 EEMB BATTERY EEMB is a professional battery manufacturer and battery solution provider since 1995. It's main product line ranges from primary lithium batteries to rechargeable lithium batteries. EEMB's long history has enabled EEMB to be in all key global markets. 3.7v 1100 mAh battery Nominal Capacity & Voltage: 1100 mAh, 3.7 V Standard Charge Method: CC/CV (CV end current 22mA) Standard Charge current: 0.2C (220mA) Charge Max Voltage: 4.200±0.020V Standard Discharge Current: of 0.2C (220mA) Cut-off Voltage: 2.750±0.005 V Maximum Charge Current: 1C (1100mA) Maximum Discharge Current: 2C (2200 mA) Charge Temperature: 0 ~ 45 ℃/Discharge Temperature: -20 ~ +60 ℃/Storage Temperature: -20 ~ +25 ℃ Weight: 22g Reliable Performance No leak, excellent cost performance and long cycle life. overcharge, over-discharge, over-current, short circuit protection, over temperature protection. Attention! Please check the battery polarity and size before use. Battery Size: 34.5 x 51 x 6.3mm (WxLxH)/1.36"x2"x0.25" (WxLxH) The red wire is the positive electrode "+" and the black wire is the negative electrode "-". Get more models of 3.7V lithium batteries at EEMB store! Review: On time delivery. - I have no complaints. Everything was delivered undamaged and in a timely manner. Thank you. Used for electronic design and engineering projects. Review: Perfect - These are exactly what you expect and the price is right. ## Features - Make Sure Device Polarity Matches with Battery Pack Connector Before Purchase-1.Battery Size; 2.Connector Model; 3.Connector Size; 4.Connector Polarity - This is not universal(It will cause a shortage if the polarity of the battery connector does not match your device.) - Basic Info—Voltage: 3.7V; Typical capacity: 1100mAh, Min capacity: 1000mAh; Weight: approximate 22g; Size: 34.5 x 51 x 6.3mm (WxLxH). And the connector model of our battery is JSH-PHR-02. The distance between positive and negative poles is 2mm and the width of the whole plug is 5.8 mm. - Reliable Performance—No leaking, excellent cost performance and long cycle life. PCM protection function: over charge, over discharge, over current, short circuit protection. - Certifications—UN 38.3 compliant. More than 400 EEMB batteries are UL certified. Search "MH20555" on UL for all EEMB UL certification information. Quality Service— Please contact us if you have any questions or concerns with the product via desertcart message. If you have any questions or concerns regarding our products, please send us a message and we will get back to you promptly. - Storage and Application—Keep the cells in 40%-60% charged state during long period storage. We recommend to charge the battery every 3 months after receipt of the battery and maintain the voltage 3.7-4.0V. Store battery in cool and dry place. Suitable for Bluetooth speaker, ESP32 Development Board，dash cam, keyboard and mouse, Wi-Fi smart home systems, PDA and digital cameras, GPS, monitoring units, e-books, tracking devices, blood oxygen tracking equipment, pulse monitors, wireless, IoT. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08VRYS8FT | | Amperage | 4 Amps | | Antenna Location | GPS | | Battery Capacity | 1100 Milliamp Hours | | Battery Cell Composition | Lithium Polymer | | Battery Cell Type | Lithium Polymer | | Battery Weight | 22 Grams | | Best Sellers Rank | #88,572 in Toys & Games ( See Top 100 in Toys & Games ) #71 in 3. | | Brand | EEMB | | Customer Reviews | 4.1 out of 5 stars 119 Reviews | | Item Dimensions | 1.36 x 2.01 x 0.25 inches | | Item Weight | 0.02 Kilograms | | Manufacturer | EEMB Co.,Ltd | | Model Name | 92-JM4C-EHLI | | Model Number | LP603449-PCM | | Number of Batteries | 4 Lithium Polymer batteries required. (included) | | Recommended Uses For Product | GPS | | Reusability | Rechargeable | | Unit Count | 4.0 Count | | Voltage | 3.7 Volts | ## Product Details - **Battery Capacity:** 1100 Milliamp Hours - **Battery Cell Composition:** Lithium Polymer - **Brand:** EEMB - **Number of Batteries:** 4 Lithium Polymer batteries required. (included) - **Recommended Uses For Product:** GPS ## Images ![EEMB 4PACK Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery Pack with Wire JST Connector for ESP32 Development Board/Speaker- Confirm Device & Connector Polarity Before Purchase - Image 1](https://m.media-amazon.com/images/I/71UG9VdFXEL.jpg) ![EEMB 4PACK Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery Pack with Wire JST Connector for ESP32 Development Board/Speaker- Confirm Device & Connector Polarity Before Purchase - Image 2](https://m.media-amazon.com/images/I/71c12SUI7eL.jpg) ![EEMB 4PACK Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery Pack with Wire JST Connector for ESP32 Development Board/Speaker- Confirm Device & Connector Polarity Before Purchase - Image 3](https://m.media-amazon.com/images/I/61lymxlfKTL.jpg) ![EEMB 4PACK Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery Pack with Wire JST Connector for ESP32 Development Board/Speaker- Confirm Device & Connector Polarity Before Purchase - Image 4](https://m.media-amazon.com/images/I/71ZVPBH+WcL.jpg) ![EEMB 4PACK Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery Pack with Wire JST Connector for ESP32 Development Board/Speaker- Confirm Device & Connector Polarity Before Purchase - Image 5](https://m.media-amazon.com/images/I/61GaTZyFNoS.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 ### ⭐⭐⭐⭐⭐ On time delivery. *by A***R on January 18, 2025* I have no complaints. Everything was delivered undamaged and in a timely manner. Thank you. Used for electronic design and engineering projects. ### ⭐⭐⭐⭐⭐ Perfect *by R***Y on December 16, 2024* These are exactly what you expect and the price is right. ### ⭐ Be aware *by B***N on June 17, 2024* These batteries don't hold the charge even for 10 seconds. left them to charge for over 24 hours and when unplugged it to take it the other location they turned off immediately. so it doesn't matter if they are good value when they don't work. ## Frequently Bought Together - EEMB 4PACK Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery Pack with Wire JST Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase - elechawk 10pcs Upgraded Tiny Whoop JST-PH 2.0 Male and Female Connector Cable for Battery JJRC H36 H67 Blade Inductrix E010 E013 - HiLetgo 3pcs TP4056 Type-c USB 5V 1A 18650 Lithium Battery Charger Module Charging Board with Dual Protection Functions --- ## 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.tn/products/313501981-eemb-4pack-lithium-polymer-battery-3-7v-1100mah-603449-lipo](https://www.desertcart.tn/products/313501981-eemb-4pack-lithium-polymer-battery-3-7v-1100mah-603449-lipo) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-01*