--- product_id: 61187552 title: "Pulse 3800mAh Transmitter 7.4V 2S Lipo Battery Ultra 7.4V 2S Lipo Battery for Radio Transmitter FrSky QX7 & Spektrum DX7S/DX8/DX9 (HELIDIRECT)" brand: "pulse" price: "€ 84.78" currency: EUR in_stock: true reviews_count: 6 url: https://www.desertcart.hr/products/61187552-pulse-3800mah-transmitter-7-4v-2s-lipo-battery-ultra-7 store_origin: HR region: Croatia --- # 7.4V 2S LiPo power 50% cost savings vs stock 3800mAh high capacity Pulse 3800mAh Transmitter 7.4V 2S Lipo Battery Ultra 7.4V 2S Lipo Battery for Radio Transmitter FrSky QX7 & Spektrum DX7S/DX8/DX9 (HELIDIRECT) **Brand:** pulse **Price:** € 84.78 **Availability:** βœ… In Stock ## Summary > πŸ”‹ Power your passion, not your worries. ## Quick Answers - **What is this?** Pulse 3800mAh Transmitter 7.4V 2S Lipo Battery Ultra 7.4V 2S Lipo Battery for Radio Transmitter FrSky QX7 & Spektrum DX7S/DX8/DX9 (HELIDIRECT) by pulse - **How much does it cost?** € 84.78 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/61187552-pulse-3800mah-transmitter-7-4v-2s-lipo-battery-ultra-7) ## Best For - pulse enthusiasts ## Why This Product - Trusted pulse brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Optimized Voltage:** Stable 7.4V 2S LiPo design ensures consistent, reliable transmitter performance. - β€’ **Seamless Charging:** Charges effortlessly inside your transmitter using standard Spektrum chargersβ€”no extra gear needed. - β€’ **Smart Compatibility:** Works perfectly with Spektrum DX7S/DX8/DX9 when set to 'LiPo' mode for accurate battery monitoring. - β€’ **Extended Flight Time:** Maximize your transmitter uptime with 3800mAh capacity for marathon flying sessions. - β€’ **Budget-Friendly Upgrade:** Enjoy premium LiPo tech at half the price of the original Spektrum battery. ## Overview The Pulse 3800mAh 7.4V 2S LiPo battery is a dedicated transmitter power solution designed for Spektrum DX7S, DX8, and DX9 radios. Offering extended run times, cost-effective pricing, and easy in-transmitter charging, it replaces NiMH packs to deliver reliable, long-lasting performance tailored for serious RC pilots. ## Description Replacing your NiMh transmitter battery with a dedicated transmitter lipo battery brings a new dimension to transmitter functionality. Gone are the days of the constant need to keep your Tx lipo battery charged or topped off, and never again will you have to worry about having your Tx lipo battery die at the field. Utilizing a 4000mah 2S 7.4V LiPo battery dedicated for the Spektrum DX7S & DX8, this battery will provide immense flight time with your transmitter, allowing you to simply enjoy flying. Further, at half the cost of the stock Spektrum LiPo battery, the Pulse Ultra Tx battery allows you to enjoy all the benefits of LiPo battery technology without the excessive cost. Designed to charge inside your transmitter with your Spektrum based transmitter charger (not included), the charging process is simple as it gets. Simply charge your Tx battery as normal, and get ready to enjoy massive run time without the worry of a dying transmitter pack. Note: For Spektrum DX7S, DX8 & DX9 users, be sure to select the "LiPo" function within your transmitter when installing the Pulse Ultra LiPo battery. This will allow your transmitter to properly monitor the battery voltage and warn you when the battery voltage becomes too low. Features: Pulse 3800mAh Transmitter 7.4V 2S Lipo Battery for FrSky QX7 Dedicated High Performance Transmitter Lipo Battery Large Array of Sizes & Voltages, Light Weight & Low Cost Charge Rate: 1C - Do Not Attempt Higher Charge Rates Applications: RC Transmitter Frsky QX7 Lipo Battery | RC Transmitter Spektrum DX7S/DX8/DX9 Lipo Battery (You will need to change the wire connector in order it works with Spektrum transmitter) Specifications: Voltage | Cell Count : 7.4V 2S Lipo Battery Capacity: 3800mAh Lipo Battery Dimensions: 71*51*17mm(12mm) (LxWxH) Weight: 134g Balance Tap: JST-XH Connector Battery Connector: Servo Connector ## Features - Replacing your NiMh transmitter battery with a dedicated LiPo transmitter lipo battery brings a new dimension to transmitter functionality. Gone are the days of the constant need to keep your Tx lipo battery charged or topped off, and never again will you have to worry about having your Tx battery die at the field. - Utilizing a 4000mah 2S 7.4V LiPo battery dedicated for the Spektrum DX7S & DX8, this battery will provide immense flight time with your transmitter, allowing you to simply enjoy flying. Further, at half the cost of the stock Spektrum LiPo battery, the Pulse Ultra Tx battery allows you to enjoy all the benefits of LiPo battery technology without the excessive cost. - Designed to charge inside your transmitter with your Spektrum based transmitter charger (not included), the charging process is simple as it gets. Simply charge your Tx battery as normal, and get ready to enjoy massive run time without the worry of a dying transmitter pack. - Note: For Spektrum DX7S, DX8 & DX9 users, be sure to select the "LiPo" function within your transmitter when installing the Pulse Ultra LiPo battery. This will allow your transmitter to properly monitor the battery voltage and warn you when the battery voltage becomes too low. - Warning: This LiPo transmitter battery is intended to power a transmitter only, and is in no way designed for use as a flight power system, such as powering a motor / ESC system. Due to the lower discharge rate and lighter gauge wiring, any use as a flight pack will immediately void the warranty of this LiPo battery, and very well may cause battery failure. ## Product Details - **Brand:** Pulse - **Battery Cell Composition:** NiMH - **Recommended Uses For Product:** Radio - **Voltage:** 7.4 Volts - **Reusability:** Rechargeable ## Images ![Pulse 3800mAh Transmitter 7.4V 2S Lipo Battery Ultra 7.4V 2S Lipo Battery for Radio Transmitter FrSky QX7 & Spektrum DX7S/DX8/DX9 (HELIDIRECT) - Image 1](https://m.media-amazon.com/images/I/51QE7SVuaVL.jpg) ![Pulse 3800mAh Transmitter 7.4V 2S Lipo Battery Ultra 7.4V 2S Lipo Battery for Radio Transmitter FrSky QX7 & Spektrum DX7S/DX8/DX9 (HELIDIRECT) - Image 2](https://m.media-amazon.com/images/I/51VzfUoO2WL.jpg) ![Pulse 3800mAh Transmitter 7.4V 2S Lipo Battery Ultra 7.4V 2S Lipo Battery for Radio Transmitter FrSky QX7 & Spektrum DX7S/DX8/DX9 (HELIDIRECT) - Image 3](https://m.media-amazon.com/images/I/51IKpJR1epL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Battery life last so long! *by J***S on April 29, 2018* For me, this was an essential mod for my Q X7. I love the radio, but constantly replacing AA batteries when learning/practicing on a simulator just wasn't practical. This battery was the perfect solution. Pay close attention to the connectors you have with your lipo charger. An adaptor may be necessary. ### ⭐⭐⭐⭐⭐ Perfect for my Qx7 *by S***N on February 14, 2019* Got this for my tanaris Qx7, long battery life, much better than the stock version. ### ⭐⭐⭐⭐⭐ Exactly what I needed *by C***S on March 14, 2019* Lasts a long time, even with a TBS module outputting some serious wattage --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/61187552-pulse-3800mah-transmitter-7-4v-2s-lipo-battery-ultra-7](https://www.desertcart.hr/products/61187552-pulse-3800mah-transmitter-7-4v-2s-lipo-battery-ultra-7) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-20*