---
product_id: 417024113
title: "FITHOOD Battery Replacement for Sony SRS-XB21 ST-05 ST-05S (3000mAh/3.78V)"
brand: "fithood"
price: "€ 40.55"
currency: EUR
in_stock: true
reviews_count: 1
url: https://www.desertcart.hr/products/417024113-fithood-battery-replacement-for-sony-srs-xb21-st-05-st
store_origin: HR
region: Croatia
---

# 3.78V Voltage Compact 68.6mm Size 3000mAh Capacity FITHOOD Battery Replacement for Sony SRS-XB21 ST-05 ST-05S (3000mAh/3.78V)

**Brand:** fithood
**Price:** € 40.55
**Availability:** ✅ In Stock

## Summary

> 🔊 Power Up Your Sound Experience!

## Quick Answers

- **What is this?** FITHOOD Battery Replacement for Sony SRS-XB21 ST-05 ST-05S (3000mAh/3.78V) by fithood
- **How much does it cost?** € 40.55 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/417024113-fithood-battery-replacement-for-sony-srs-xb21-st-05-st)

## Best For

- fithood enthusiasts

## Why This Product

- Trusted fithood brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **⚡ Stay Charged:** Reliable 3.78V voltage for optimal performance
- • **📏 Perfect Fit:** Compact dimensions for seamless integration
- • **📧 Expert Support:** Professional assistance available for compatibility
- • **✅ Certified Quality:** ISO9001, RoHS, CE certified for peace of mind
- • **🔋 Unleash the Power:** 3000mAh capacity for extended playtime

## Overview

The FITHOOD Battery Replacement for Sony SRS-XB21 ST-05 ST-05S is a high-quality, certified Li-ion battery with a robust 3000mAh capacity and 3.78V voltage, designed to keep your speaker performing at its best. With compact dimensions and expert support for compatibility, this battery ensures you never miss a beat.

## Description

- Compatible Model:   SRS-XB21  - Compatible Battery Part Number:   ST-05  ST-05S  Tips Before Purchase Please confirm the compatible model and battery part number carefully before you purchase it.

## Features

- High quality replacement battery for Speaker
- All batteries are Certificated with ISO9001, RoHS, CE, UN38.3, and MSDS
- Battery Specifications - Capacity: 3000mAh, WH: 11.34Wh, Type: Li-ion, Voltage: 3.78V
- Dimensions: 68.6 x 20.0 x 20.0mm Weight: 76.4g
- Please ensure both model and battery part number are matched with your device. If you are not sure, please send email to us with your battery details or pictures, we will give you professional suggestions.

## Product Details

- **Number of Batteries:** 1 Lithium Ion batteries required. (included)
- **Brand:** FITHOOD
- **Battery Cell Composition:** Lithium Ion
- **Battery Capacity:** 3000 Milliampere Hour (mAh)
- **Unit Count:** 1 Count

## Images

![FITHOOD Battery Replacement for Sony SRS-XB21 ST-05 ST-05S (3000mAh/3.78V) - Image 1](https://m.media-amazon.com/images/I/71ORB17-ISS.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ It works
*by A***R on April 25, 2024*

So far so good, I just swapped out the batter on my Sony xb-21 and it works. All plugs fit correctly and power the speaker. I have had this speaker for 4+ years and beat it to death. After taking it apart and replacing the battery I wouldn’t trust it to be waterproof any longer.But for $20 if I get another year or so out of it I’d be happyEdit: update after 5 months still going strong. Stays charged and plays music for a decent amount of time considering it is an off brand replacement.

## Frequently Bought Together

- FITHOOD Battery Replacement for Sony SRS-XB21 ST-05 ST-05S (3000mAh/3.78V)
- 18650 3.7V 6600mAh 1S3P Rechargeable Li-ion Battery Pack, JST-PH2.0 2-pin Connector / Compatible with Simplehuman Mirrors ST3024, ST3026, ST3028, BT1080/ Arduino Projects/ Rak LoRa Board/ 2GIG Panel.

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**Shop now:** [https://www.desertcart.hr/products/417024113-fithood-battery-replacement-for-sony-srs-xb21-st-05-st](https://www.desertcart.hr/products/417024113-fithood-battery-replacement-for-sony-srs-xb21-st-05-st)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-02*