--- product_id: 181858389 title: "LP401730" brand: "eemb" price: "¥7013" currency: JPY in_stock: true reviews_count: 13 category: "Eemb" url: https://www.desertcart.jp/products/181858389-lp401730 store_origin: JP region: Japan --- # 150mAh High Capacity 3.7V Lithium Polymer Power Molex 51021-0200 Connector LP401730 **Brand:** eemb **Price:** ¥7013 **Availability:** ✅ In Stock ## Summary > 🔋 Power Your Essentials with Precision & Confidence! ## Quick Answers - **What is this?** LP401730 by eemb - **How much does it cost?** ¥7013 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/181858389-lp401730) ## 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 & Power:** Compact 17.5x31x4.3mm size with exact Molex connector ensures seamless device compatibility—no guesswork, no downtime. - • **Lightweight & Long-Lasting:** At just 2.8g, these batteries pack a punch with 150mAh capacity, powering your wireless devices for days on a single charge. - • **Certified Quality Assurance:** UN 38.3 and UL certified, guaranteeing top-tier safety and performance standards trusted by professionals. - • **Reliable & Safe Performance:** Built-in PCM protection guards against overcharge, over-discharge, short circuit, and overcurrent for worry-free use. - • **Versatile Device Compatibility:** Ideal for Bluetooth speakers, dash cams, smart home gadgets, and more—upgrade your tech with confidence. ## Overview The EEMB 4PACK Lithium Polymer Battery offers a reliable 3.7V, 150mAh rechargeable power source with a compact form factor and Molex 51021-0200 connector. Featuring advanced PCM protection and certified safety standards, these lightweight batteries are perfect for a wide range of wireless devices including speakers, dash cams, and smart home systems. Designed for professionals who demand dependable performance and seamless integration. ## Description desertcart.com: EEMB 4PACK Lithium Polymer Battery 3.7V 150mAh 401730 Lipo Rechargeable Battery Pack with Wire Molex Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase : Health & Household Review: Awesome battery for a good price! - Product works as intended for a good price. Needed it to replace a dongles battery I had. Charges quickly and lasts me a few days. Thank you!! Review: Dashcam LiPo Battery - I bought 2 of these batteries to replace the failed batteries in my 2 ten-year-old iTrue dashcams. Had to cut off the connectors that came with them, strip and tin the wires, and solder the ends onto the pads of the old batteries. The new batts are a bit smaller than the old ones but they have the same amperage/voltage rating and they worked! Solved all the problems I was having with saving videos to my micro SD cards. ## Features - Must Confirm before Purchase: 1.Battery size; 2. Connector model; 3.Connector size; 4. Polarity of the connector - This is not universal(This will cause a shortage if the polarity of the battery connector does not match your device.) - Basic Info—Voltage: 3.7V; Typical capacity: 150mAh, Min capacity: 140mAh; Weight: approximate 2.8g; Size: 17.5 x 31 x 4.3mm/0.68"x1.22"x0.17" (WxLxH). And the connector model of our battery is Molex 51021-0200. The distance between positive and negative poles is 1.25mm and the width of the whole plug is 4.25 mm. - Reliable Performance - No leakage, excellent economic performance and long service life. PCM protection function: overcharging, 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, 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 | B08HH2VLZ7 | | Amperage | 4 Amps | | Antenna Location | Indoor/Outdoor | | Battery Capacity | 150 Milliamp Hours | | Battery Cell Type | Lithium Polymer | | Battery Weight | 2.8 Grams | | Best Sellers Rank | #171,085 in Health & Household ( See Top 100 in Health & Household ) #136 in 3.7V Batteries | | Brand | EEMB | | Compatible Phone Models | Attribute not applicable to product | | Customer Reviews | 4.1 4.1 out of 5 stars (506) | | Item Dimensions | 0.69 x 1.26 x 0.17 inches | | Manufacturer | EEMB Co.,Ltd | | Model Name | LP401730 | | Model Number | LP401730-PCM | | Number of Batteries | 4 Lithium Polymer batteries required. | | Reusability | Rechargeable | | Unit Count | 4.0 Count | | Voltage | 3.7 Volts | ## Product Details - **Battery Capacity:** 150 Milliamp Hours - **Battery Cell Composition:** Lithium Polymer - **Brand:** EEMB - **Number of Batteries:** 4 Lithium Polymer batteries required. - **Recommended Uses For Product:** Indoor/Outdoor ## Images ![LP401730 - Image 1](https://m.media-amazon.com/images/I/71SfoBt3XEL.jpg) ![LP401730 - Image 2](https://m.media-amazon.com/images/I/71OfLaRR4AL.jpg) ![LP401730 - Image 3](https://m.media-amazon.com/images/I/61XOaN8z1AL.jpg) ![LP401730 - Image 4](https://m.media-amazon.com/images/I/612FgtnpO1L.jpg) ![LP401730 - Image 5](https://m.media-amazon.com/images/I/61-tjFMVm3L.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: what are the watt hours of this product?** A: 0.555 watt hours must multiple the voltage by the rated mAh 3.7 x 0.150 **Q: I just got this battery. Can you please tell me what charger I need?** A: You could simply use this: Adafruit Mini Lipo w/Mini-B USB Jack - USB LiIon/LiPoly Charger found here: https://www.amazon.com/Adafruit-Micro-Lipo-MicroUSB-Jack/dp/B00MJ0HOKS/ref=pd_bxgy_2/144-8112353-4398000?_encoding=UTF8&pd_rd_i=B00MJ0HOKS&pd_rd_r=adddf0d1-2de1-41c4-a9b2-e067f623bd69&pd_rd_w=1qA8e&pd_rd_wg=ONjEp&pf_rd_p=f325d01c-4658-4593-be83-3e12ca663f0e&pf_rd_r=9AW95CV5YQ61WG6P40ZC&psc=1&refRID=9AW95CV5YQ61WG6P40ZC This you can plug into any USB port. **Q: Can I safely desolder the terminals to use a different one?** A: Yes one at a time ## Customer Reviews ### ⭐⭐⭐⭐⭐ Awesome battery for a good price! *by S***V on May 19, 2025* Product works as intended for a good price. Needed it to replace a dongles battery I had. Charges quickly and lasts me a few days. Thank you!! ### ⭐⭐⭐⭐⭐ Dashcam LiPo Battery *by 7***S on August 6, 2023* I bought 2 of these batteries to replace the failed batteries in my 2 ten-year-old iTrue dashcams. Had to cut off the connectors that came with them, strip and tin the wires, and solder the ends onto the pads of the old batteries. The new batts are a bit smaller than the old ones but they have the same amperage/voltage rating and they worked! Solved all the problems I was having with saving videos to my micro SD cards. ### ⭐⭐⭐⭐ Good battery *by J***O on January 24, 2026* Rlly good battery and nice packaging. I bought it for my ifi go blue hut it didn’t work. The molex connector was a bit too thick. But pretty good battery. ## Frequently Bought Together - EEMB Lithium Polymer Battery 3.7V 150mAh 401730 Lipo Rechargeable Battery Pack with Wire Molex 1.25mm 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 - EEMB Lithium Polymer Battery 3.7V 250mAh 502030 Lipo Rechargeable Battery Pack with Wire JST 2.0mm Connector for VXI Blue Parrott- Confirm Device & Connector Polarity Before Purchase --- ## 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/181858389-lp401730](https://www.desertcart.jp/products/181858389-lp401730) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-04-23*