--- product_id: 381895524 title: "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" brand: "melasta" price: "$66.09" currency: USD in_stock: true reviews_count: 13 category: "Melasta" url: https://www.desertcart.us/products/381895524-14-4v-3500mah-replacement-battery-for-eufy-robovac-11-11s store_origin: US region: United States of America --- # 3500mAh long-lasting capacity 14.4V high-voltage power Multi-layer safety protection 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 **Brand:** melasta **Price:** $66.09 **Availability:** ✅ In Stock ## Summary > 🔋 Power your clean lifestyle—never miss a spot or a beat! ## Quick Answers - **What is this?** 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 by melasta - **How much does it cost?** $66.09 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/381895524-14-4v-3500mah-replacement-battery-for-eufy-robovac-11-11s) ## 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 - • **Built to Last:** Up to 500 charge cycles with less than 1% monthly self-discharge means your RoboVac stays powered longer, month after month. - • **Smart Safety First:** Patented PCB tech guards against overcharge, over-discharge, overheating, and short circuits, keeping your home and device safe. - • **Power Through Your Day:** 14.4V lithium-ion battery delivers consistent, high-voltage energy for up to 4 hours of uninterrupted cleaning. - • **Seamless Compatibility:** Engineered to perfectly match original batteries for Eufy, Ecovacs, Conga, Shark, and more—plug and play with zero hassle. - • **Endurance That Impresses:** 3500mAh capacity ensures extended runtime, letting your RoboVac cover more ground without frequent recharges. ## Overview The melasta 14.4V 3500mAh Replacement Battery is a premium lithium-ion power source designed for a wide range of robotic vacuum models including Eufy RoboVac, Ecovacs Deebot, Conga, and Shark. Featuring Grade A+ cells with UL, CE, and MSDS certifications, it offers up to 4 hours of runtime, smart CC-CV charging compatibility, and advanced multi-protection circuitry for safe, reliable performance. With a lifespan of up to 500 cycles and less than 1% self-discharge per month, this battery ensures your vacuum cleaner operates like new, delivering consistent cleaning power and peace of mind. ## Description Product Description Compatible with the following models For Eufy Robovac Robovac 11, RoboVac 11S, RoboVac 11S Max, RoboVac 12, RoboVac 15C, RoboVac 15C Max, RoboVac 15T, RoboVac 30, RoboVac 30 Max, RoboVac 30C , RoboVac 35C For Conga Excellence Conga Excellence 990, Conga Excellence 950, Conga Excellence 1090 For Ecovacs Deebot Deebot N79S, Deebot N79, Deebot N79W, Deebot N79SE, Deebot 500 Deebot DN622.11,Deebot DN622, Deebot DN622.31 For Tesvor X500 For Shark: RV700, RV720, RV750, RV755 This battery is not compatible with the iLife A4 A6 V7 and Conga 1290 1390 3090 series. Cellules de catégorie A + certifiées CE Founded in 2008, melasta has been recognised as a renowned portable power projector in Europe and Asia. melasta is engaged in the production and sale of rechargeable batteries and chargers in various models. Our production facilities to the latest international standards. More professional, better quality, better service High-tech plant Past ISO9001 3500 mah lithium-ion battery, 100% real capacity. Longer working time: provides up to 3-4 hours of work. Integrated intelligent CC-CV charging circuit, fully compatible with the original charger. Longer life: up to 500 life cycles at 80% capacity. Made from 100% original parts, used like the originals. Less than 1% self-discharge rate/month. Multiple protection system, patented PCB technology Tested by the manufacturer to match OEM products All have been tested in hoovers Cleaning time varies according to appliance model and floor surface Durée plus longue Provide up to 3-4 hours of working time on a full charge. （Cleaning time may vary depending on appliance model and floor surface）. Fully compatible with your original battery and charger. More durable, longer lasting. Fonction de protection multiple Built-in protection against overloads, excessive discharges, overvoltage, overcurrent, overheating and short circuits. The multiple protection function makes the hoover safer and can also extend the life of the hoover and the battery. Longue durée de vie The over-discharge function means that the self-discharge rate is less than 1% per month. It still has power when it has been set aside for a month. it can retain 80% of its original capacity after 12 months of use. 500 cycle life. Review: Fixed the issue of no charging - Replacement battery in my Eufy RoboVac 11S MAX. Fixed the issue of no charging (red light after 4 orange pulses) with the original battery after 3 years of use. Easy to replace: 2 screws to open the battery compartment, lift out the old battery using the white tabs; disconnect the old battery [this was the only tricky part, I needed the roll back the black covering over the connector to see the clip to disconnect the old battery]. Connect the new battery is a reversal of the steps above - its a tight fit! All is now working as new. Review: Easy replacement for eufy robot vacuum - My eufy robovac 12 battery died, so I replaced it with is one and so far the battery is lasting considerably longer . ## 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 | | Battery capacity | 3500 Milliampere Hour (mAh) | | Battery cell composition | Lithium Ion | | Best Sellers Rank | 23,202 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 10 in Vacuum Batteries | | Brand | melasta | | 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 out of 5 stars 677 Reviews | | Item Dimensions | 9.1 x 6 x 5 centimetres | | Manufacturer | melasta | | Number of Batteries | 1 Lithium Ion batteries required. (included) | | Number of batteries | 1 Lithium Ion batteries required. (included) | | Product Warranty | 1 year | | Recommended uses for product | Vacuum Cleaner | | Reusability | Rechargeable | | UPC | 630148238289 | | Unit Count | 1.0 count | | Unit count | 1.0 count | | Voltage | 14.4 Volts | ## Product Details - **Number of batteries:** 1 Lithium Ion batteries required. (included) - **Brand:** melasta - **Battery cell composition:** Lithium Ion - **Battery capacity:** 3500 Milliampere Hour (mAh) - **Recommended uses for product:** Vacuum Cleaner ## Images ![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 - Image 1](https://m.media-amazon.com/images/I/61ppOy-7rRL.jpg) ![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 - Image 2](https://m.media-amazon.com/images/I/61zpsTL2CWL.jpg) ![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 - Image 3](https://m.media-amazon.com/images/I/71d94H+uyaL.jpg) ![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 - Image 4](https://m.media-amazon.com/images/I/71G1EaJ9iYL.jpg) ![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 - Image 5](https://m.media-amazon.com/images/I/717yt5Vf5EL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fixed the issue of no charging *by D***N on 14 December 2025* Replacement battery in my Eufy RoboVac 11S MAX. Fixed the issue of no charging (red light after 4 orange pulses) with the original battery after 3 years of use. Easy to replace: 2 screws to open the battery compartment, lift out the old battery using the white tabs; disconnect the old battery [this was the only tricky part, I needed the roll back the black covering over the connector to see the clip to disconnect the old battery]. Connect the new battery is a reversal of the steps above - its a tight fit! All is now working as new. ### ⭐⭐⭐⭐⭐ Easy replacement for eufy robot vacuum *by L***A on 23 August 2024* My eufy robovac 12 battery died, so I replaced it with is one and so far the battery is lasting considerably longer . ### ⭐⭐⭐⭐ Doesn’t last all that much longer *by A***R on 14 January 2025* so understanding battery capacity et cetera quite disappointed actually that it doesn’t last as long that’s what I would hopeful given it has had multiple charges so it should be up to capacity, however fitment is the same no issues with that at all ## 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/381895524-14-4v-3500mah-replacement-battery-for-eufy-robovac-11-11s](https://www.desertcart.us/products/381895524-14-4v-3500mah-replacement-battery-for-eufy-robovac-11-11s) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-05*