--- product_id: 381895524 title: "3500mAh Replacement Battery for Eufy RoboVac 11 11S 11S MAX 30 30C" brand: "melasta" price: "$55.83" currency: USD in_stock: true category: "Melasta" url: https://www.desertcart.us/products/381895524-3500mah-replacement-battery-for-eufy-robovac-11-11s-11s-max store_origin: US region: United States of America --- # 14.4V powerful output 3500mAh high capacity Multi-layer safety protection 3500mAh Replacement Battery for Eufy RoboVac 11 11S 11S MAX 30 30C **Brand:** melasta **Price:** $55.83 **Availability:** ✅ In Stock ## Summary > 🔋 Power your clean life with confidence—never miss a spot or a beat! ## Quick Answers - **What is this?** 3500mAh Replacement Battery for Eufy RoboVac 11 11S 11S MAX 30 30C by melasta - **How much does it cost?** $55.83 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/381895524-3500mah-replacement-battery-for-eufy-robovac-11-11s-11s-max) ## Best For - melasta enthusiasts ## Why This Product - Trusted melasta brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Premium Grade A+ Cells:** Built with UL, CE, UN38.3, and MSDS certified cells ensuring durability and reliable performance. - • **Seamless Compatibility:** Engineered to perfectly fit a wide range of top robot vacuum models—no guesswork, just plug & play. - • **Advanced Safety Circuitry:** Patented PCB tech shields against overcharge, over-discharge, and overheating for peace of mind. - • **Eco-Friendly Rechargeable:** Low self-discharge rate (<1%/month) means your battery stays fresh and ready, reducing waste. - • **Extended Runtime Powerhouse:** Keep your RoboVac running longer with 3500mAh capacity—outlast competitors effortlessly. ## Overview The melasta 3500mAh Replacement Battery delivers robust 14.4V power with premium Grade A+ lithium-ion cells, engineered for perfect compatibility with leading robot vacuum models including Eufy RoboVac, Ecovacs Deebot, and Conga. Featuring patented multi-protection circuitry, it ensures safe, long-lasting performance with a low self-discharge rate, backed by CE and RoHS certifications and a 1-year warranty. ## Description melasta 3500mAh Replacement Battery for Eufy RoboVac 11 11S 11S MAX 30 30C | Longer Life Than Other Battery, Li-Ion Battery for 15C 15C MAX 12 15T 35C, Ecovacs Deebot N79S N79 DN622, Conga 990 950 1090: desertcart.co.uk: Home & Kitchen ## Features - 【Fit Model】★ Eufy Robovac 11, 11C, 11S, 11S Max, 11S PLUS, 12, 15, 15C, 15C Max, 15T, 25C, 25C Max, 30, 30 Max, 30C, 35C, G10 Hybrid, G30, G30 Edge, G30 Hybrid, G30 Verge, R500, R450; ★ Ecovacs Deebot N79S, N79, N79SE, N79W, DN622. 11, DN622, DN622.31, 500, 600, 601, 661; ★ Tesvor X500, X500 Pro; ★ Conga Excellence 950 990 1090, 1190, 1790 1990; ★ Tesvor 500; ★ IKOHS Netbot S14, S15; ★ Lefant T700; ★ Proscenic 850t. - 【Perfectly compatible】★ Shark ION Robot RV700, RV720, RV750, RV755; Coredy R300, R500+, R580, R600, R650, R3500, R3500S; ★ Amarey A800, A900; ★ Bagotte BG600, BG700; Goovi D380, F007C / J10C; ★ iMartine C800, ONSON J10C, Dser 22T, Thamtu G11, Deenkee DK700. - 【Battery Technology】: 14.4V 3500mah lithium ion battery, bulid-into Grade A+ cells, the cells selection with UL CE UN38.3 MSDS cetified. 【Original Match】Manufactured to 100% match with original vacuum cleaner. Build-in smart charging CC-CV circuit, fully compatible with your original battery charger. - 【Multiple Protection】Patented PCB technology provide over-charge, over-discharge, over-voltage, over current, short-circuit and over-temperature protection. Advanced Li-ion technology improves energy density, self-discharge rate is less than 1% per month. - 【Safe and Reliable】melasta batteries have passed CE, RONHS testing, reliable and safe. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09CT78QFH | | Amperage | 14.4 Amps | | Antenna Location | Vacuum Cleaner | | Battery Capacity | 3500 Milliampere Hour (mAh) | | Battery Cell Type | Lithium Ion | | Battery Weight | 230 Grams | | Best Sellers Rank | 22,985 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 12 in Vacuum Batteries | | Brand Name | melasta | | Compatible Phone Models | Replacement Battery for Eufy RoboVac 11 11S 11S MAX 30 30C 30C Max, 15C 15C MAX 12 15T 35C, Ecovacs Deebot N79S N79 DN622, Conga 990 950 1090, Shark RV700 RV720 RV750 RV755 | | Country of Origin | China | | Customer Reviews | 4.4 4.4 out of 5 stars (686) | | Item Dimensions | 9.1 x 6 x 5 centimetres | | Manufacturer | melasta | | Number of Batteries | 1 Lithium Ion batteries required. (included) | | Product Warranty | 1 year | | Reusability | Rechargeable | | UPC | 630148238289 | | Unit Count | 1.0 count | | Voltage | 14.4 Volts | ## Product Details - **Battery capacity:** 3500 Milliampere Hour (mAh) - **Battery cell composition:** Lithium Ion - **Brand:** melasta - **Number of batteries:** 1 Lithium Ion batteries required. (included) - **Recommended uses for product:** Vacuum Cleaner ## Images ![3500mAh Replacement Battery for Eufy RoboVac 11 11S 11S MAX 30 30C - Image 1](https://m.media-amazon.com/images/I/61ppOy-7rRL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - melasta 14.4V 3500mAh Replacement Battery for Eufy RoboVac 11 11S 11S MAX 30 30C 30C Max, 15C 15C MAX 12 15T 35C, Ecovacs Deebot N79S N79 DN622, Conga 990 950 1090, Shark RV700 RV720 RV750 RV755 - KEEPOW Replacement Parts Kit for Ecovacs Deebot N79S N79 Robot Vacuum Cleaner, Main Brush HEPA Filter Side Brush Accessory for Eufy RoboVac 11, for Cecotec Conga Excellence 990, Pack of 12 --- ## 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.us/products/381895524-3500mah-replacement-battery-for-eufy-robovac-11-11s-11s-max](https://www.desertcart.us/products/381895524-3500mah-replacement-battery-for-eufy-robovac-11-11s-11s-max) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-19*