--- product_id: 401008109 title: "EEMB 3.7V 502030 Battery 250mAh Lipo Battery Rechargeable Lithium Polymer Battery with JST2.0 for Nextbase Dashcam Battery Replacement-Make Sure Device Polarity Matches with Battery Before Purchase!" brand: "eemb" price: "€ 24.10" currency: EUR in_stock: true reviews_count: 13 category: "Eemb" url: https://www.desertcart.hr/products/401008109-eemb-3-7v-502030-battery-250mah-lipo-battery-rechargeable-lithium store_origin: HR region: Croatia --- # 500mA Max Discharge Current Compact 20.5x32x5.3mm Size 3.7V Voltage Power EEMB 3.7V 502030 Battery 250mAh Lipo Battery Rechargeable Lithium Polymer Battery with JST2.0 for Nextbase Dashcam Battery Replacement-Make Sure Device Polarity Matches with Battery Before Purchase! **Brand:** eemb **Price:** € 24.10 **Availability:** ✅ In Stock ## Summary > 🔋 Power up your tech with precision and confidence! ## Quick Answers - **What is this?** EEMB 3.7V 502030 Battery 250mAh Lipo Battery Rechargeable Lithium Polymer Battery with JST2.0 for Nextbase Dashcam Battery Replacement-Make Sure Device Polarity Matches with Battery Before Purchase! by eemb - **How much does it cost?** € 24.10 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-502030-battery-250mah-lipo-battery-rechargeable-lithium) ## 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 That Lasts:** 250mAh capacity with robust PCM protection for overcharge, over-discharge, and temperature safety—keeping your devices running longer and safer. - • **Featherweight Champion:** At just 5 grams, this ultra-light battery won’t weigh down your tech, perfect for on-the-go professionals. - • **Trusted Global Quality:** Backed by EEMB’s 25+ years of expertise and UL certifications, ensuring reliability you can count on. - • **Versatile Compatibility:** Ideal for dash cams, Bluetooth speakers, smart home gadgets, and more—upgrade your essential devices effortlessly. - • **Precision Fit, Zero Guesswork:** Designed with exact size and polarity specs to ensure seamless dashcam or device replacement—no risky mismatches! ## Overview The EEMB 3.7V 502030 Lithium Polymer Battery offers a compact 250mAh capacity with advanced PCM safety features, ensuring reliable, leak-free performance. Engineered for exact size and polarity compatibility, it’s the perfect rechargeable replacement for dash cams and various smart devices, backed by over 25 years of trusted manufacturing and UL certification. ## 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: 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. Review: Good battery - Bought this for my dash cam after the old battery, good quality battery with long life easy to fit and good value ## Features - MUST CONFIRM 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: 250mAh, Min capacity: 230mAh; Weight: approximate 5g; Size: 20.5 x 32 x 5.3mm (WxLxH) - CERTIFICATIONS—More than 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 with the product via desertcart message. We will respond to you within 24 hours. - RELIABLE PERFORMANCE—No leaking, excellent cost performance and long cycle life. PCM protection function: over charge, over discharge, over current, short circuit protection, over temperature protection. STORAGE—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. And store the battery in cool and dry place. - APPLICATION—Suitable for bluetooth speaker, dash cam, keyboard and mouse, Wi-Fi enabled smart home systems, PDA and digital cameras, GPS, monitoring units, notebook computers, 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 288 in Rechargeable Household Batteries | | Brand | EEMB | | Brand Name | EEMB | | Country of Origin | China | | Customer Reviews | 4.4 out of 5 stars 1,805 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 502030 Battery 250mAh Lipo Battery Rechargeable Lithium Polymer Battery with JST2.0 for Nextbase Dashcam Battery Replacement-Make Sure Device Polarity Matches with Battery Before Purchase! - Image 1](https://m.media-amazon.com/images/I/61k3Fo6CGmL.jpg) ![EEMB 3.7V 502030 Battery 250mAh Lipo Battery Rechargeable Lithium Polymer Battery with JST2.0 for Nextbase Dashcam Battery Replacement-Make Sure Device Polarity Matches with Battery Before Purchase! - Image 2](https://m.media-amazon.com/images/I/71M715KbF-L.jpg) ![EEMB 3.7V 502030 Battery 250mAh Lipo Battery Rechargeable Lithium Polymer Battery with JST2.0 for Nextbase Dashcam Battery Replacement-Make Sure Device Polarity Matches with Battery Before Purchase! - Image 3](https://m.media-amazon.com/images/I/61m1Gsf+9AL.jpg) ![EEMB 3.7V 502030 Battery 250mAh Lipo Battery Rechargeable Lithium Polymer Battery with JST2.0 for Nextbase Dashcam Battery Replacement-Make Sure Device Polarity Matches with Battery Before Purchase! - Image 4](https://m.media-amazon.com/images/I/71nCc6Y4FTL.jpg) ![EEMB 3.7V 502030 Battery 250mAh Lipo Battery Rechargeable Lithium Polymer Battery with JST2.0 for Nextbase Dashcam Battery Replacement-Make Sure Device Polarity Matches with 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 ### ⭐⭐⭐⭐⭐ 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. ### ⭐⭐⭐⭐⭐ Good battery *by A***R on 12 November 2025* Bought this for my dash cam after the old battery, good quality battery with long life easy to fit and good value ### ⭐⭐⭐⭐ Not a perfect replacement *by W***R on 20 July 2025* Fitted this to a next base 422gw - it appears to work fine. However the original battery was a 333133 3.7v 280mAh with an additional white 'thermistor' wire. ## 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-502030-battery-250mah-lipo-battery-rechargeable-lithium](https://www.desertcart.hr/products/401008109-eemb-3-7v-502030-battery-250mah-lipo-battery-rechargeable-lithium) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-19*