--- product_id: 401008109 title: "EEMB 3.7V Li-ION 502030 Battery 250mAh Lipo Battery Rechargeable Lithium Polymer ION Battery with JST Connector- Make sure the polarity of the device matches the battery before purchase" brand: "eemb" price: "€ 31.54" currency: EUR in_stock: true reviews_count: 13 category: "Eemb" url: https://www.desertcart.hr/products/401008109-eemb-3-7v-li-ion-502030-battery-250mah-lipo-battery store_origin: HR region: Croatia --- # 500mA Max Discharge Current Compact 20.5x32x5.3mm Size 3.7V Nominal Voltage EEMB 3.7V Li-ION 502030 Battery 250mAh Lipo Battery Rechargeable Lithium Polymer ION Battery with JST Connector- Make sure the polarity of the device matches the battery before purchase **Brand:** eemb **Price:** € 31.54 **Availability:** ✅ In Stock ## Summary > 🔋 Power your lifestyle with precision and safety — never miss a beat! ## Quick Answers - **What is this?** EEMB 3.7V Li-ION 502030 Battery 250mAh Lipo Battery Rechargeable Lithium Polymer ION Battery with JST Connector- Make sure the polarity of the device matches the battery before purchase by eemb - **How much does it cost?** € 31.54 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/401008109-eemb-3-7v-li-ion-502030-battery-250mah-lipo-battery) ## 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 - • **Compact & Lightweight:** At just 5g and slim dimensions, it fits seamlessly into sleek, modern gadgets. - • **Power-packed Precision:** Reliable 3.7V voltage ensures consistent performance for your smart devices. - • **Versatile Compatibility:** Perfect for Bluetooth speakers, dash cams, smart home devices, and more—upgrade your tech effortlessly. - • **Certified Safety Assurance:** UN38.3 & UL certified for peace of mind with overcharge, short circuit, and temperature protections. - • **Long-lasting Rechargeability:** 250mAh capacity with robust cycle life keeps your devices powered longer, reducing replacements and waste. ## Overview The EEMB 3.7V 250mAh Lithium Polymer battery combines compact design with certified safety features, delivering reliable power for a wide range of smart devices including dash cams, Bluetooth speakers, and IoT gadgets. Lightweight and rechargeable, it supports up to 500mA discharge current with built-in protections against overcharge, short circuit, and temperature extremes, making it a trusted choice for professionals seeking durable, efficient energy solutions. ## Description Product Description LP 502030 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. LP502030 3.7V 250 mAh Lithium Polymer Battery Nominal Capacity & Voltage: 250 mAh, 3.7 V Standard Charge Method: CC/CV (CV end current 5mA) Standard Charge current: 0.2C (50mA) Charge Max Voltage: 4.200±0.020V Standard Discharge Current: of 0.2C (50mA) Cut-off Voltage: 2.750±0.005 V Maximum Charge Current: 1C (250mA) Maximum Discharge Current: 2C (500 mA) Charge Temperature: 0 ~ 45 ℃/Discharge Temperature: -20 ~ +60 ℃/Storage Temperature: -20 ~ +25 ℃ Weight: 5g 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: 20.5 x 32 x 5.3mm/0.8"x1.26"x0.2" (WxLxH) The red wire is the positive electrode "+" and the black wire is the negative electrode "-". Bluetooth speaker Dash cam Bark collar for dog Keyboard and mouse Review: Good replacement for Nexbase dashcam - Purchased to replace the battery in my Nexbase dashcam (apparently obsolete after 4 years but hey they kindly (!!) offered me 15% off a new one....). Perfect fit and working well so far, even if it lasts a couple of years it's much cheaper than buying a new dashcam ;-) Review: This 3.7V can replace an identical 3.2V battery. - I got this 3.7V to replace an obsolete 3.2Vwhich otherwise is just the same (size and looks). I charge it with a simple USB cable that plugs into the battery and my computer. I use it to power a small electric plane (which took the 3.2V) and the plane works perfectly. ## Features - UN38.3 Certified. Voltage: 3.7V; Typical Capacity: 250mAh, Minimum Capacity: 230mAh; Weight: about 5g; Size: 20.5 x 32 x 5.3mm (LxWxH) - CERTIFICATIONS—Over 400 EEMB batteries are UL certified. Search "MH20555" on UL for all EEMB UL certification information. - MANUFACTURER DIRECT—Please contact us if you have any questions or concerns about the product via desertcart message. We will reply you within 24 hours. - STORAGE—Keep the cells in a 40-60% charge state during long term storage. We recommend charging the battery every 3 months after receiving the battery and maintaining the voltage 3.7-4.0V. And store the battery in a cool and dry place. - APPLICATION—Suitable for Bluetooth speaker, dash camera, keyboard and mouse, Wi-Fi enabled smart home systems, PDA and digital cameras, GPS, monitoring units, laptops, e-books, telematics, tracking devices, sleep management equipment, blood oxygen tracking equipment, pulse monitors. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08FD3V6TF | | Amperage | 500 Milliamps | | Antenna Location | Camera | | Battery Capacity | 250 Milliampere Hour (mAh) | | Battery Cell Type | Lithium Polymer | | Battery Weight | 5 Grams | | Battery capacity | 250 Milliampere Hour (mAh) | | Battery cell composition | Lithium Polymer | | Best Sellers Rank | 6 in Flash Battery Packs 262 in Rechargeable Household Batteries | | Brand | EEMB | | Brand Name | EEMB | | Country of Origin | China | | Customer Reviews | 4.4 out of 5 stars 1,638 Reviews | | Item Dimensions | 20 x 32 x 5 millimetres | | Item Weight | 5 Grams | | Manufacturer | EEMB | | Model Name | LP502030 | | Model Number | LP502030-PCM | | Number of Batteries | 1 Lithium Polymer batteries required. | | Number of batteries | 1 Lithium Polymer batteries required. | | Product Warranty | 1 | | Recommended uses for product | Camera | | Reusability | Rechargeable | | Unit Count | 1.0 count | | Unit count | 1.0 count | | Voltage | 3.7 Volts | ## Product Details - **Battery capacity:** 250 Milliamp Hours - **Battery cell composition:** Polymer - **Brand:** EEMB - **Number of batteries:** 4 Lithium Polymer batteries required. (included) ## Images ![EEMB 3.7V Li-ION 502030 Battery 250mAh Lipo Battery Rechargeable Lithium Polymer ION Battery with JST Connector- Make sure the polarity of the device matches the battery before purchase - Image 1](https://m.media-amazon.com/images/I/61k3Fo6CGmL.jpg) ![EEMB 3.7V Li-ION 502030 Battery 250mAh Lipo Battery Rechargeable Lithium Polymer ION Battery with JST Connector- Make sure the polarity of the device matches the battery before purchase - Image 2](https://m.media-amazon.com/images/I/71M715KbF-L.jpg) ![EEMB 3.7V Li-ION 502030 Battery 250mAh Lipo Battery Rechargeable Lithium Polymer ION Battery with JST Connector- Make sure the polarity of the device matches the battery before purchase - Image 3](https://m.media-amazon.com/images/I/61m1Gsf+9AL.jpg) ![EEMB 3.7V Li-ION 502030 Battery 250mAh Lipo Battery Rechargeable Lithium Polymer ION Battery with JST Connector- Make sure the polarity of the device matches the battery before purchase - Image 4](https://m.media-amazon.com/images/I/71nCc6Y4FTL.jpg) ![EEMB 3.7V Li-ION 502030 Battery 250mAh Lipo Battery Rechargeable Lithium Polymer ION Battery with JST Connector- Make sure the polarity of the device matches the battery before purchase - Image 5](https://m.media-amazon.com/images/I/61Y2yWcRGNL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: How do I recharge the battery?** A: Be VERY careful with this type of battery! If you do get it wrong you will have a chemical fire on your hands, that won't go out until the reaction has finished. Otherwise, the unit it is intended for will correctly charge it when fitted. **Q: will this battery fit a Nextbase 312G Dashcam.** A: Yes - it works on our dashcam. There is a Youtube video by someone who shows you how to do it. You will need a soldering iron and solder and some micro screwdrivers to do the work. **Q: Is this battery suited to a next base 522gw** A: Hi - not sure about it fitting a 522gw, fitted to mine which is a 512gw and works perfectly. **Q: I need a 7.4 v battery for my ebook and the exact replacement is not available in the uk. can i use 2 of these in series ? will it charge correctly ?** A: Hi, this is a li-ion battery I don't think it is suitable for charging in serial. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good replacement for Nexbase dashcam *by M***T on 12 July 2025* Purchased to replace the battery in my Nexbase dashcam (apparently obsolete after 4 years but hey they kindly (!!) offered me 15% off a new one....). Perfect fit and working well so far, even if it lasts a couple of years it's much cheaper than buying a new dashcam ;-) ### ⭐⭐⭐⭐⭐ This 3.7V can replace an identical 3.2V battery. *by M***Z on 14 October 2025* I got this 3.7V to replace an obsolete 3.2Vwhich otherwise is just the same (size and looks). I charge it with a simple USB cable that plugs into the battery and my computer. I use it to power a small electric plane (which took the 3.2V) and the plane works perfectly. ### ⭐⭐⭐⭐ Took a few charges to retain full capacity *by D***R on 2 October 2024* Replacement for dashcam battery. Quick delivery but appeared to take a few charges to reach reliable full capacity. Good value overall ## Frequently Bought Together - EEMB Lithium Polymer battery 3.7V 250mAh 502030 Lipo Rechargeable Battery Pack with wire JST Connector for VXI Blue Parrott and MP3 MP4 Speaker-confirm device & connector polarity before purchase(4) - EEMB Lithium Polymer battery 3.7V 2000mAh 103454 Lipo Rechargeable Battery Pack with wire JST Connector for Bluetooth Speaker and Dashcam-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 Eachine 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.hr/products/401008109-eemb-3-7v-li-ion-502030-battery-250mah-lipo-battery](https://www.desertcart.hr/products/401008109-eemb-3-7v-li-ion-502030-battery-250mah-lipo-battery) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-08-09*