---
product_id: 296641463
title: "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"
brand: "hxjnldc"
price: "5175 som"
currency: KGS
in_stock: true
reviews_count: 13
category: "Hxjnldc"
url: https://www.desertcart.kg/products/296641463-802540-3-7v-900mah-lithium-battery-for-sena-10s-series
store_origin: KG
region: Kyrgyzstan
---

# 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 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

**Brand:** hxjnldc
**Price:** 5175 som
**Availability:** ✅ In Stock

## Summary

> 🔋 Stay charged, stay connected — never miss a ride or a call!

## Quick Answers

- **What is this?** 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 by hxjnldc
- **How much does it cost?** 5175 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/296641463-802540-3-7v-900mah-lithium-battery-for-sena-10s-series)

## 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, Always:** Integrated Japanese Seiko IC safeguards against overcharge, overdischarge, overcurrent, and short circuits for worry-free rides.
- • **Power Your Ride All Day:** 900mAh capacity ensures long-lasting Bluetooth headset performance for your Sena 10S, 20S, and 30K series.
- • **Lightweight & Compact Powerhouse:** Slim 8×25×41mm size and 18g weight fit discreetly inside your headset without bulk or hassle.
- • **Precision Voltage for Peak Performance:** 3.7V nominal voltage with a 4.2V full charge keeps your device running smoothly without power dips.
- • **Seamless Compatibility & Easy Installation:** Designed specifically for Sena Bluetooth headsets with genuine JST 2-pin connector; DIY-friendly with included heat shrink sleeve.

## Overview

This 802540 lithium-ion battery delivers a reliable 900mAh capacity at 3.7V nominal voltage, perfectly engineered for Sena 10S, 20S, and 30K series Bluetooth motorcycle headsets. Featuring advanced Japanese Seiko IC protection against overcharge, overcurrent, and short circuits, it ensures safe, long-lasting power. Compact and lightweight, it fits seamlessly into your headset, making it the ultimate replacement battery to keep your communication uninterrupted 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: Perfect fit - Arrived on time, exactly as stated by seller , fits well in my Sena S20 & charges fast.. within an hour it was fully charged!

## 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 |
| Batteries | 1 C batteries required. (included) |
| Best Sellers Rank | #125,069 in Health & Household ( See Top 100 in Health & Household ) #145 in 3.7V Batteries |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,501) |
| Date First Available | January 8, 2021 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.593 ounces |
| Item model number | 402030 |
| Manufacturer | HXJN |
| Product Dimensions | 1.61 x 0.98 x 0.31 inches |

## 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 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 - Image 1](https://m.media-amazon.com/images/I/61uXzPTiM8L.jpg)

## 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.

### ⭐⭐⭐⭐⭐ Perfect fit
*by C***0 on September 17, 2025*

Arrived on time, exactly as stated by seller , fits well in my Sena S20 & charges fast.. within an hour it was fully charged!

### ⭐⭐⭐⭐⭐ Good batter replacement
*by A***R on June 16, 2025*

Worked really well. The plug was identical no need to change like some videos Ive seen. I’m now able to go for long ride without recharging. I get typical 8 to 12 hrs depending on if i play music the entire time . Old battery went about 3 hrs. The new battery is awesome,

## 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
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**Shop now:** [https://www.desertcart.kg/products/296641463-802540-3-7v-900mah-lithium-battery-for-sena-10s-series](https://www.desertcart.kg/products/296641463-802540-3-7v-900mah-lithium-battery-for-sena-10s-series)

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-03-03*