---
product_id: 332964612
title: "502540 3.7v Battery 550mAh for Sena SMH5 Motorcycles Bluetooth Headset Batter..."
brand: "hxjnldc"
price: "€ 28.22"
currency: EUR
in_stock: null
reviews_count: 13
category: "Hxjnldc"
url: https://www.desertcart.sk/products/332964612-502540-3-7v-battery-550mah-for-sena-smh5-motorcycles-bluetooth
store_origin: SK
region: Slovakia
---

# 3.7V nominal voltage, 4.2V full charge 550mAh high-capacity power Overcharge & short circuit protection 502540 3.7v Battery 550mAh for Sena SMH5 Motorcycles Bluetooth Headset Batter...

**Brand:** hxjnldc
**Price:** € 28.22
**Availability:** ❌ Out of Stock

## Summary

> 🔋 Power your adventure with confidence — never miss a beat on the road!

## Quick Answers

- **What is this?** 502540 3.7v Battery 550mAh for Sena SMH5 Motorcycles Bluetooth Headset Batter... by hxjnldc
- **How much does it cost?** € 28.22 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/332964612-502540-3-7v-battery-550mah-for-sena-smh5-motorcycles-bluetooth)

## 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:** 550mAh lithium polymer battery delivers reliable, long-lasting energy for your Sena SMH5 headset and compatible devices.
- • **Lightweight & Compact:** Slim 5×25×41mm design weighing just 11.5g fits discreetly inside your headset without bulk or hassle.
- • **Built-In Safety Shield:** Advanced Japanese Seiko IC protects against overcharge, overdischarge, overcurrent, and short circuits for peace of mind.
- • **Seamless Compatibility:** Fits multiple Sena models including SMH5, SMH5-FM, SMH5D, and even Nextbase 312GW HD DVR cams — DIY-friendly with included connector options.
- • **Precision Voltage Control:** Nominal 3.7V with a full charge of 4.2V ensures optimal performance without risking device damage.

## Overview

This 502540 rechargeable lithium polymer battery offers 550mAh capacity at 3.7V nominal voltage, designed as a direct replacement for Sena SMH5 series Bluetooth motorcycle headsets and compatible with Nextbase 312GW HD DVR cams. Featuring advanced Japanese Seiko IC protection circuitry, it safeguards against overcharge, overdischarge, overcurrent, and short circuits. Compact and lightweight, it supports DIY installation with clear polarity guidance and connector options, making it the smart choice to extend your device’s life and keep you connected on every ride.

## Description

desertcart.com: 502540 3.7v Battery 550mAh for Sena SMH5 Motorcycles Bluetooth Headset Battery Replacement Sena SMH5-FM SMH5D SPH10H-FM Part Number (P/N): ICP40/25/40P fits Nextbase 312GW HD Recording DVR Cam : Electronics

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.
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.

## Features

- ★Compatible with Sena SMH5 Motorcycles Bluetooth Headset Battery Replacement,compatible models for Sena SMH5S,Sena SMH5-UNIV,Sena SMH5D,Sena SMH5D-UNIV,Sena SMH5-FM,Sena SMH5-FM-01,Sena SMH5-FM-UNIV, SPH10H-FM Battery Part Number (P/N): ICP40/25/40P fits Nextbase 312GW，HD Recording DVR Cam。Also suitable for DIY electronic products with 3.7-5V and less than 2.03Wh 550mAh built-in 2-wire battery replacement.（★ 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.
- ★502540 rechargeable lithium ion polymer battery, nominal voltage 3.7V, full charge voltage 4.2V, capacity 550mAh, power 2.03Wh, size 5×25×41mm(0.197×0.984×1.614inch）(T*W*L), Weight:11.5g(0.405oz)，Maximum current:0.5A。 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, 3302-26 high temperature resistant silicone cable, and genuine JST Pitch1.25mm 2-pin connector module.
- If there are any quality issues within a year, ★please feel free to contact us via email for replacement.
- ★Please carefully compare the polarity of the connector before use,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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08SJ1WCDT |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Best Sellers Rank | #137,583 in Health & Household ( See Top 100 in Health & Household ) #139 in 3.7V Batteries |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,519) |
| Date First Available | January 20, 2021 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.388 ounces |
| Item model number | 402030 |
| Manufacturer | HXJN |
| Product Dimensions | 1.61 x 0.98 x 0.2 inches |

## Product Details

- **Battery Capacity:** 550 Milliamp Hours
- **Battery Cell Composition:** Lithium Polymer
- **Brand:** HXJNLDC
- **Number of Batteries:** 1 Lithium Polymer batteries required. (included)
- **Recommended Uses For Product:** Motorcycles

## Images

![502540 3.7v Battery 550mAh for Sena SMH5 Motorcycles Bluetooth Headset Batter... - Image 1](https://m.media-amazon.com/images/I/61E-EuIJfFL.jpg)
![502540 3.7v Battery 550mAh for Sena SMH5 Motorcycles Bluetooth Headset Batter... - Image 2](https://m.media-amazon.com/images/I/71bszR7VytL.jpg)
![502540 3.7v Battery 550mAh for Sena SMH5 Motorcycles Bluetooth Headset Batter... - Image 3](https://m.media-amazon.com/images/I/81jSmvePDIL.jpg)
![502540 3.7v Battery 550mAh for Sena SMH5 Motorcycles Bluetooth Headset Batter... - Image 4](https://m.media-amazon.com/images/I/81ygEeonPJL.jpg)
![502540 3.7v Battery 550mAh for Sena SMH5 Motorcycles Bluetooth Headset Batter... - Image 5](https://m.media-amazon.com/images/I/6106D5+qX5L.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ 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

- 502540 3.7v Battery 550mAh for Sena SMH5 Motorcycles Bluetooth Headset Battery Replacement Sena SMH5-FM SMH5D SPH10H-FM Battery Part Number (P/N): ICP40/25/40P fits Nextbase 312GW HD Recording DVR Cam
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- Sena SMH10-10 Motorcycle Bluetooth Headset/Intercom Communication System (Single)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-08*