--- product_id: 296641463 title: "802540 3.7v 900mAh Lithium Battery for Sena 10S 20s 30K Series 10S-01 20s-01 20s evo 30K-01D Motorcycles Bluetooth Headset Battery Replacement Intercom" brand: "hxjnldc" price: "120.63 DT" currency: TND in_stock: true reviews_count: 13 category: "Hxjnldc" url: https://www.desertcart.tn/products/296641463-802540-3-7v-900mah-lithium-battery-for-sena-10s-20s store_origin: TN region: Tunisia --- # 3.7V nominal voltage, 4.2V full charge 900mAh high-capacity power Built-in overcharge & short circuit protection 802540 3.7v 900mAh Lithium Battery for Sena 10S 20s 30K Series 10S-01 20s-01 20s evo 30K-01D Motorcycles Bluetooth Headset Battery Replacement Intercom **Brand:** hxjnldc **Price:** 120.63 DT **Availability:** ✅ In Stock ## Summary > 🔋 Power your ride, stay connected, never miss a beat! ## Quick Answers - **What is this?** 802540 3.7v 900mAh Lithium Battery for Sena 10S 20s 30K Series 10S-01 20s-01 20s evo 30K-01D Motorcycles Bluetooth Headset Battery Replacement Intercom by hxjnldc - **How much does it cost?** 120.63 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/296641463-802540-3-7v-900mah-lithium-battery-for-sena-10s-20s) ## Best For - hxjnldc enthusiasts ## Why This Product - Trusted hxjnldc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety-First Tech:** Japanese Seiko IC safeguards against overcharge, overcurrent, and short circuits—reliable longevity. - • **Compact Powerhouse:** Slim 8×25×41mm design fits discreetly without bulk, ideal for on-the-go pros. - • **Bonus Insulation Kit:** Includes heat shrinkable sleeve for secure, professional-grade wire connections—upgrade your DIY game. - • **Quick & Easy Replacement:** No soldering needed; just plug in and revive your Bluetooth headset in minutes. - • **Seamless Sena Compatibility:** Perfectly engineered for Sena 10S, 20s, 30K series headsets—plug & play power boost. ## Overview This 802540 lithium polymer battery delivers a robust 900mAh capacity at 3.7V nominal voltage, designed specifically for Sena 10S, 20s, and 30K motorcycle Bluetooth headsets. Featuring advanced Japanese Seiko IC protection against overcharge, overcurrent, and short circuits, it ensures safe, reliable performance. Compact and lightweight, it offers a hassle-free plug-and-play replacement with included heat shrinkable insulation for secure wiring. Perfect for professionals who demand uninterrupted communication on the road. ## Description desertcart.com: HXJNLDC 802540 3.7v 900mAh Lithium Battery for Sena 10S 20s 30K Series 10S-01 20s-01 20s evo 30K-01D Motorcycles Bluetooth Headset Battery Replacement Intercom : Electronics Review: Replacement batteries for Senna intercom system - They fit perfectly Review: Fixed my 20S - After plugging in my 20S, it just died. No lights, no charging, no power. Suspecting a ruined battery, I opened the unit up with a small allen key. Bought this battery, which arrived in 48 hours, and replaced the old one. No soldering necessary, just plugged the new battery in... Charged her up and VOILA! Worked like a charm... and saved myself a ton of money. ## Features - Compatible with Sena 10S series，Sena 10S-01， Sena 20s series，Sena 20s-01，Sena 20s evo，Sena 30K series，Sena 30K-01D Bluetooth Headset Battery Replacement。It can also be used in other 3.7-5V electronic products with power less than 3.33Wh (900mAh).（★ Not applicable to high-power electric tools and model aircraft） - Please compare the connector specifications and polarity according to the display diagram before purchasing,★the red wire is the positive "+" and the black wire is the negative "-"，Do not reverse-charge or reverse-connectreverse. ★The primary battery of some products has no plug or mismatched plug or mismatched polarity. It doesn't matter, you can cut and solder the plug directly or use our heat shrinkable insulating sleeve to connect the same color wire. - 802540 rechargeable lithium ion polymer battery, nominal voltage 3.7V, full charge voltage 4.2V, capacity 900mAh, power 3.33Wh, ★size 8×25×41mm(0.315×0.984×1.614inch）(T*W*L), Weight:18g(0.635oz)，Maximum current:1A。 It can prevent overcharge, overdischarge, overcurrent, and short circuit. - It‘s consists of of large-capacity A+ lithium battery, Japanese Seiko IC overcharge and overcurrent short circuit protection board, 3302-28 high temperature resistant silicone cable, and genuine JST Pitch1.0mm 2-pin connector module. - If there are any quality issues within a year,★ please feel free to contact us via email for replacement. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08TBYRSNQ | | Amperage | 0.9 A | | Antenna Location | Motorcycles | | Battery Capacity | 900 milliamp_hours | | Battery Cell Composition | Lithium Polymer | | Battery Cell Type | Lithium Polymer | | Battery Weight | 16.8 g | | Best Sellers Rank | #97,480 in Health & Household ( See Top 100 in Health & Household ) #27 in 3.7V Batteries | | Brand | HXJNLDC | | Customer Reviews | 4.2 out of 5 stars 636 Reviews | | Included Components | 850mAh battry x 1 pack, heat shrinkable insulating sleeve x 1 | | Item Dimensions | 1.61 x 0.98 x 0.31 inches | | Item Weight | 16.8 g | | Manufacturer | HXJN | | Model Name | 802540 | | Model Number | 802540 | | Number of Batteries | 1 C batteries required. (included) | | Recommended Uses For Product | Motorcycles | | Reusability | Rechargeable | | UPC | 049500840204 | | Unit Count | 1 Count | | Voltage | 3.7 volts_of_direct_current | ## Product Details - **Battery Capacity:** 900 Milliamp Hours - **Battery Cell Composition:** Lithium Polymer - **Brand:** HXJNLDC - **Number of Batteries:** 1 C batteries required. (included) - **Recommended Uses For Product:** Motorcycles ## Images ![802540 3.7v 900mAh Lithium Battery for Sena 10S 20s 30K Series 10S-01 20s-01 20s evo 30K-01D Motorcycles Bluetooth Headset Battery Replacement Intercom - Image 1](https://m.media-amazon.com/images/I/51bgtF2X9KL.jpg) ![802540 3.7v 900mAh Lithium Battery for Sena 10S 20s 30K Series 10S-01 20s-01 20s evo 30K-01D Motorcycles Bluetooth Headset Battery Replacement Intercom - Image 2](https://m.media-amazon.com/images/I/61rAj1vlv9L.jpg) ![802540 3.7v 900mAh Lithium Battery for Sena 10S 20s 30K Series 10S-01 20s-01 20s evo 30K-01D Motorcycles Bluetooth Headset Battery Replacement Intercom - Image 3](https://m.media-amazon.com/images/I/81jSmvePDIL.jpg) ![802540 3.7v 900mAh Lithium Battery for Sena 10S 20s 30K Series 10S-01 20s-01 20s evo 30K-01D Motorcycles Bluetooth Headset Battery Replacement Intercom - Image 4](https://m.media-amazon.com/images/I/81ygEeonPJL.jpg) ![802540 3.7v 900mAh Lithium Battery for Sena 10S 20s 30K Series 10S-01 20s-01 20s evo 30K-01D Motorcycles Bluetooth Headset Battery Replacement Intercom - Image 5](https://m.media-amazon.com/images/I/61UY9+x-GSL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Will fit on a Sena Outrush Helmet???** A: Hello, I am not sure it is suitable for Sena Outrush Helmet at present. You need to take out the primary battery to compare the size, connector and polarity. **Q: current headset is listed as SMH 10b the current battery is 560mAh 2.07wh will this work?** A: If it fits the higher mAh it. will last longer between charges….. **Q: Does this battery fit the Sena 50s?** A: Existing data are not certain to apply. You need to compare the original battery connector before you can determine **Q: Do these come fully charged.** A: I just installed the battery in a motorcycle helmet and charged it without trying it right away! It was fully charged in a much shorter time than the original battery in my husband’s helmet… ## Customer Reviews ### ⭐⭐⭐⭐⭐ Replacement batteries for Senna intercom system *by T***M on July 19, 2026* They fit perfectly ### ⭐⭐⭐⭐⭐ Fixed my 20S *by J***3 on July 29, 2022* After plugging in my 20S, it just died. No lights, no charging, no power. Suspecting a ruined battery, I opened the unit up with a small allen key. Bought this battery, which arrived in 48 hours, and replaced the old one. No soldering necessary, just plugged the new battery in... Charged her up and VOILA! Worked like a charm... and saved myself a ton of money. ### ⭐⭐⭐⭐⭐ Yes this Absolutely fits and works on Sena 20s EVO *by O***. on May 26, 2023* My replacement Sena 20s EVO battery arrived today and I enjoyed 100% success installing it. The 20s evo install instructions are "scary" but very doable. I used youtube video /watch?v=x311Sux8Ppo The sena 20s evo was NOT designed to have its battery replaced. But just because it wasn't designed to be replaced doesn't mean it can't be done. Install instructions such as the above make it possible. YES this battery is about 1/32" wider and 1/16" longer than OEM. HOWEVER it still "fits" without any heroic efforts. I varied from video in two places. a) I used a loop of duct tape to affix the battery to its case vs using the OEM 2-sided tape. I did this because a loop of tape is way thinner makes up for any extra thickness batter might have. b) I used a piece of scotch tape to pin the cable to the battery side as to keep it out of the way during top circuit board insertion. when I was done my unit turn on all the functions worked. I have only owned this unit for a few hours but I know it accepts a full charge and all the evo functions work. Time will tell how long the battery will last. My old battery was 4 yrs old and didn't last long anymore. The picture with a yellow-sided battery is OEM, the picture with the silver battery is its replacement. ## Frequently Bought Together - 802540 3.7v 900mAh lithium battery for Sena 10S series Sena 10S-01 ena Sena 20s series Sena 20s-01 Sena 20s evo Sena 30K series Sena 30K-01D Motorcycles Bluetooth Headset Battery Replacement Intercom - Sena - SC-A0325 High Definition Speakers, Improved Bass and Clarity | Fits 20S EVO and 30K | Upgraded (Black, One Size) - Sena SC-A0100 Micro-USB Type Power Cable --- ## 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.tn/products/296641463-802540-3-7v-900mah-lithium-battery-for-sena-10s-20s](https://www.desertcart.tn/products/296641463-802540-3-7v-900mah-lithium-battery-for-sena-10s-20s) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-21*