--- product_id: 223710633 title: "11.1V 4000mAh 3S 30C Smart LiPo Battery: IC3, SPMX40003S30" brand: "spektrum" price: "$133.53" currency: USD in_stock: true reviews_count: 5 category: "Spektrum" url: https://www.desertcart.us/products/223710633-11-1v-4000mah-3s-30c-smart-lipo-battery-ic3-spmx40003s30 store_origin: US region: United States of America --- # 30C discharge rate for peak performance 4000mAh high-capacity power Integrated smart microchip for health data 11.1V 4000mAh 3S 30C Smart LiPo Battery: IC3, SPMX40003S30 **Brand:** spektrum **Price:** $133.53 **Availability:** ✅ In Stock ## Summary > 🔋 Power up smarter, last longer, and stay ahead of the pack! ## Quick Answers - **What is this?** 11.1V 4000mAh 3S 30C Smart LiPo Battery: IC3, SPMX40003S30 by spektrum - **How much does it cost?** $133.53 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/223710633-11-1v-4000mah-3s-30c-smart-lipo-battery-ic3-spmx40003s30) ## Best For - spektrum enthusiasts ## Why This Product - Trusted spektrum brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rugged Durability:** Metal alloy shell dissipates heat and maintains battery shape under pressure. - • **Effortless Smart Charging:** Auto-upload battery health & settings to compatible chargers—just press start. - • **Extended Battery Lifespan:** Smart discharge feature prevents overcharging by auto-discharging to safe voltage. - • **Plug & Play Compatibility:** IC3 & IC5 connectors work seamlessly with EC3/EC5—no soldering needed. - • **Real-Time Performance Monitoring:** Track cell voltage, temperature, and charge cycles for optimal maintenance. ## Overview The Spektrum 11.1V 4000mAh 3S 30C Smart LiPo Battery features an integrated microchip that stores unique battery health data, enabling automatic upload to compatible chargers for hassle-free, optimized charging. Its smart discharge function extends battery life by safely lowering voltage during storage. Built with a protective metal alloy shell and equipped with IC3 and IC5 connectors compatible with EC3/EC5 systems, this battery delivers reliable, high-performance power with real-time monitoring of voltage, temperature, and charge cycles—ideal for serious hobbyists seeking durability and cutting-edge tech. ## Description Product description Key Features Integrated microchip stores unique parameters for each battery Smart discharge allows batteries to automatically discharge to a safe voltage Save time and hassle, while improving battery life Protective outer metal alloy sheet helps dissipate heat, hold battery shape, and increase durability No soldering required, equipped with IC3 and IC5 Connectors that are compatible with EC3 and EC5 Feature Overview You'll never have to set charge preferences for a Spektrum Smart battery until you want to. When a Spektrum Smart LiPo battery is connected to a Spektrum Smart charger, unique parameters and health of that Smart LiPo battery upload from the Smart memory microchip integrated into the battery. Through the charger, you can view and set preferences, such as charge rates, so that all you have to do to charge the pack every time is press the charger "Start" button. Smart technology takes care of the rest. Our new Spektrum Smart 30C LiPos come in a variety of popular sizes and are ready to drop into your RC aircraft for maximum performance, power, and reliability. These are the perfect packs for high performance models and power systems and a great upgrade to get more punch and power on nearly any setup. Our new Spektrum Smart 30C LiPos come in a variety of popular sizes and are ready to drop into your RC aircraft for maximum performance, power, and reliability. Smart Discharge When programmed with a Spektrum Smart Charger, Smart Batteries will automatically discharge to your predetermined storage voltage when they are left to rest for a time period you choose, between 12 and 240 hours. This feature will help to extend the life of your Smart Batteries by preventing your batteries from sitting fully charged for an extended period of time. This unique feature results in longer battery life expectancy and better performance over the life of the pack. Simple and Quick You'll never have to set charge preferences for a Spektrum Smart battery until you want to. Spektrum Smart LiPo Batteries Store Unique Data, Such As Battery Brand Battery Type Battery Capacity Individual Cell Voltage Battery Temperature Charge/Discharge Cycles Smart Battery Technology When connected to a Spektrum Smart charger, unique parameters and health of your Smart LiPo battery upload from the Smart memory microchip integrated into the battery. Through the charger, you can set and record preferred settings, such as charge rates and self-discharge options, so that all you have to do to charge the pack is press the "start" button. Smart technology will take care of the rest. Every Smart LiPo battery is factory assembled with the next-generation IC3 and IC5 output connector that utilizes a data transfer wire to relay saved information to your Smart Chargers. New IC3 & IC5 Connectors The innovative Smart connection is made possible by an installed microchip on every battery, feeding the unique information through a data cable to the new IC3 and IC5 connectors. The IC series of connectors are designed from the ground up to provide a more solid connection, higher heat resistance, and effortless installation. For those using the popular EC3 and EC5 connectors, there's no need to worry. The IC connector series is entirely backwards compatible with existing connectors so you can use Smart Batteries with older systems, but only when connected to a Spektrum Smart device are all the benefits of Smart technology obvious. Data Rich Review: Smart battery - Can’t go wrong with smart Spectrum battery Review: Good product - Actually this is a spare battery for the one that came with my RC model. Both are reforming well. The product arrived on time and well packaged. ## Features - Smart Battery Technology: Integrated microchip stores unique parameters and health data for each battery, enabling automatic upload to compatible chargers - Battery Specifications: 11.1V 4000mAh 3S 30C LiPo battery with IC3 connector for reliable power delivery - Automatic Discharge Feature: Smart discharge functionality allows batteries to automatically discharge to a safe voltage level - Enhanced Durability: Protective outer metal alloy sheet helps dissipate heat and maintain battery shape during operation - Connector Compatibility: Equipped with IC3 and IC5 connectors that are compatible with EC3 and EC5 without requiring soldering - Performance Monitoring: Tracks individual cell voltage, battery temperature, and charge/discharge cycles for optimal maintenance - Safety Features: Maintains error log including over-heat, over-discharge, and over-charge incidents for improved battery management ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08B1M7ZBR | | Antenna Location | Hobby | | Battery Capacity | 4000 Milliamp Hours | | Battery Cell Composition | Lithium Polymer | | Battery Cell Type | Lithium Polymer | | Battery Weight | 0.3 Grams | | Best Sellers Rank | #200,282 in Toys & Games ( See Top 100 in Toys & Games ) #1,497 in Hobby Remote & App Controlled Vehicle Batteries | | Brand | Spektrum | | Built-In Media | 11.1V 4000mAh 3S 30C Smart LiPo Battery: IC3 | | Compatible Phone Models | 30C Smart LiPo | | Customer Reviews | 4.7 out of 5 stars 55 Reviews | | Item Dimensions | 7.25 x 2.49 x 1.76 inches | | Item Type Name | Air | | Manufacturer | Spektrum | | Model Name | 11.1V 4000mAh 3S 30C Smart LiPo Battery: IC3 | | Model Number | SPMX40003S30 | | Number of Batteries | 1 Lithium Polymer batteries required. (included) | | Recommended Uses For Product | Hobby | | Reusability | Rechargeable | | UPC | 605482690352 | | Unit Count | 1 Count | | Voltage | 11.1 Volts | ## Product Details - **Number of Batteries:** 1 Lithium Polymer batteries required. (included) - **Brand:** Spektrum - **Battery Cell Composition:** Lithium Polymer - **Battery Capacity:** 4000 Milliamp Hours - **Recommended Uses For Product:** Hobby ## Images ![11.1V 4000mAh 3S 30C Smart LiPo Battery: IC3, SPMX40003S30 - Image 1](https://m.media-amazon.com/images/I/712OgNr5d0L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Smart battery *by R***O on March 13, 2024* Can’t go wrong with smart Spectrum battery ### ⭐⭐⭐⭐⭐ Good product *by P***M on June 4, 2021* Actually this is a spare battery for the one that came with my RC model. Both are reforming well. The product arrived on time and well packaged. ### ⭐⭐⭐ Has balance wire not a single plug for spectrum chargers *by J***O on August 1, 2023* Has balance wire not a single plug for spectrum chargers And that wasn’t clear in the add ## Frequently Bought Together - Spektrum 11.1V 4000mAh 3S 30C Smart LiPo Battery: IC3, SPMX40003S30 - Spektrum S155 G2 1x55W AC Smart Charger, SPMXC2050 - E-flite RC Airplane Habu STS 70mm EDF Jet RTF Basic Battery and Charger Not Included Smart Trainer with Safe EFL015001 --- ## 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/223710633-11-1v-4000mah-3s-30c-smart-lipo-battery-ic3-spmx40003s30](https://www.desertcart.us/products/223710633-11-1v-4000mah-3s-30c-smart-lipo-battery-ic3-spmx40003s30) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-09*