--- 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: "$34.99" currency: USD in_stock: true reviews_count: 13 category: "Hxjnldc" url: https://www.desertcart.us/products/296641463-802540-3-7v-900mah-lithium-battery-for-sena-10s-20s store_origin: US region: United States of America --- # 3.7V nominal voltage, 4.2V full charge 900mAh high-capacity power Advanced 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:** $34.99 **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?** $34.99 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/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 - • **Power Up Your Ride:** Seamlessly compatible with Sena 10S, 20S, 30K series Bluetooth headsets for uninterrupted communication on the go. - • **Ready for the Road:** Lightweight 18g design with heat-resistant silicone cables built to withstand high temperatures and rugged motorcycle conditions. - • **Long-Lasting Energy:** 900mAh lithium polymer battery delivers reliable power to keep your intercom running longer and stronger. - • **Safe & Smart Charging:** Built-in Japanese Seiko IC safeguards against overcharge, overdischarge, and short circuits for peace of mind. - • **Precision Fit & Easy Install:** Compact 8×25×41mm size with genuine JST connector ensures a snug fit and hassle-free replacement—even for non-serviceable models. ## Overview This 802540 3.7V 900mAh lithium polymer battery is a premium replacement for Sena 10S, 20S, and 30K series motorcycle Bluetooth headsets. Featuring advanced Japanese Seiko IC protection, a compact form factor, and genuine JST connectors, it ensures safe, reliable, and long-lasting power. Designed for easy installation even on models not originally serviceable, it’s the ultimate upgrade to keep your communication seamless on every ride. ## Description desertcart.com: 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 : Electronics Review: Yes this Absolutely fits and works on Sena 20s EVO - 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. Review: Works great - Fits and works great in a Sena 20S. In an email Sena claimed that replacing the battery is unserviceable. Suggested I buy a new model. The battery replacement was easy. ## 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 Amps | | Antenna Location | Motorcycles | | Battery Capacity | 900 Milliamp Hours | | Battery Cell Composition | Lithium Polymer | | Battery Cell Type | Lithium Polymer | | Battery Weight | 16.8 Grams | | Best Sellers Rank | #91,247 in Health & Household ( See Top 100 in Health & Household ) #42 in 3.7V Batteries | | Brand | HXJNLDC | | Built-In Media | 850mAh battry x 1 pack, heat shrinkable insulating sleeve x 1 | | Customer Reviews | 4.3 out of 5 stars 1,594 Reviews | | Item Dimensions | 1.61 x 0.98 x 0.31 inches | | Item Weight | 16.8 Grams | | Manufacturer | HXJN | | Model Name | 802540 | | Model Number | 402030 | | 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 (DC) | ## 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) ## 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 ### ⭐⭐⭐⭐⭐ 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. ### ⭐⭐⭐⭐⭐ Works great *by B***A on February 3, 2026* Fits and works great in a Sena 20S. In an email Sena claimed that replacing the battery is unserviceable. Suggested I buy a new model. The battery replacement was easy. ### ⭐⭐⭐⭐⭐ Fits perfectly. *by F***P on April 1, 2023* Unfortunately, this review will not be about the battery life, but more about the ease of installation. I am not in a position to actually use these yet, but I had my Sena SMH10's main units with me and knew the batteries needed to be changed. My main concerns were fit of the battery and ease of opening up the headset to install the new battery. These batteries came promptly and are a larger capacity battery than the originals in the headsets. After taking out the three screws holding the headset together, I carefully pried the two pieces apart. This took under a minute to do.....from that point on, changing out the battery was simple. It plugs right in to the port that the old battery is unplugged from and fits perfectly into it's alloyed space. Within minutes, the two pieces were fit back together and screwed right. I immediately charged both units and, initially amber, they were soon blue, indictating a charge. I know they will now work, but don't have the helmets or mic attachments with me to actually use them as this equipment is in another state. At least I'll be ready to go when I finally hop onto my scooters in a few months! ## 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.us/products/296641463-802540-3-7v-900mah-lithium-battery-for-sena-10s-20s](https://www.desertcart.us/products/296641463-802540-3-7v-900mah-lithium-battery-for-sena-10s-20s) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-21*