---
product_id: 102597867
title: "Headphone Battery Li-Polymer 350 mAh/1.29wh 3.7 V suitable for SONY"
brand: "poam"
price: "€ 59.90"
currency: EUR
in_stock: true
url: https://www.desertcart.fi/products/102597867-headphone-battery-li-polymer-350-mah-1-29wh-3-7
store_origin: FI
region: Finland
---

# 3.7 V power Compact size 34.88 x 20.10 x 7.00 mm 350 mAh capacity Headphone Battery Li-Polymer 350 mAh/1.29wh 3.7 V suitable for SONY

**Brand:** poam
**Price:** € 59.90
**Availability:** ✅ In Stock

## Summary

> 🔊 Power Up Your Sound Experience!

## Quick Answers

- **What is this?** Headphone Battery Li-Polymer 350 mAh/1.29wh 3.7 V suitable for SONY by poam
- **How much does it cost?** € 59.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/102597867-headphone-battery-li-polymer-350-mah-1-29wh-3-7)

## Best For

- poam enthusiasts

## Why This Product

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

## Key Features

- • **⚡ Stay Charged:** Reliable 3.7 V output ensures your headphones are always ready to go.
- • **📏 Perfect Fit:** Designed to seamlessly replace original Sony batteries for a hassle-free upgrade.
- • **🔋 Unleash the Power:** Experience uninterrupted audio with a robust 350 mAh capacity.
- • **🌱 Eco-Friendly Choice:** Lithium Polymer technology offers a lightweight and efficient power source.
- • **🔄 Versatile Compatibility:** Compatible with multiple Sony models, making it your go-to battery solution.

## Overview

This Lithium Polymer battery, with a capacity of 350 mAh and a voltage of 3.7 V, is specifically designed for various Sony headphone models. Its compact dimensions (34.88 x 20.10 x 7.00 mm) make it an ideal replacement for original batteries, ensuring optimal performance and longevity.

## Description

Technical details Technology: Li-Polymer Voltage: 3.7 V Capacity: 350 mAh/1.29wh Dimensions (L x W x H): 34.88 x 20.10 x 7.00 mm Suitable for the following models: SonyBT21, BT22, Dr BT21, Dr BT22, Dr BT21G, Dr BT21IK, Dr/BT21GB/21/22 Replaces the following original batteries: SonyReplace HP300 A,, 64399 '01, 65358-01 64327, PLN/PLN-6439901, Ed PLN/PLN-6439901, 6535801

## Features

- Lithium Polymer, 3.7 V 350 mAh/1.29wh, 34.88 x 20.10 X 7.00 mm
- Suitable for the following models: & # X3010; Sony & # X3011; BT21, BT22, Dr BT21, Dr BT22, Dr BT21G, Dr BT21IK, Dr/BT21GB/21/22
- Replaces the following original batteries: & # X3010; Sony & # X3011; Replace HP300 A,, 64399 &apos;01, 65358-01 64327, PLN/PLN-6439901, Ed PLN/PLN-6439901, 6535801

## Product Details

- **Brand:** POAM
- **Battery cell composition:** Lithium Polymer
- **Compatible phone models:** Sony
- **Recommended uses for product:** Headphones
- **Unit count:** 1.0 count

## Images

![Headphone Battery Li-Polymer 350 mAh/1.29wh 3.7 V suitable for SONY - Image 1](https://m.media-amazon.com/images/I/51pOMoHcZAL.jpg)
![Headphone Battery Li-Polymer 350 mAh/1.29wh 3.7 V suitable for SONY - Image 2](https://m.media-amazon.com/images/I/51HDlQkKSoL.jpg)
![Headphone Battery Li-Polymer 350 mAh/1.29wh 3.7 V suitable for SONY - Image 3](https://m.media-amazon.com/images/I/51JY27taklL.jpg)
![Headphone Battery Li-Polymer 350 mAh/1.29wh 3.7 V suitable for SONY - Image 4](https://m.media-amazon.com/images/I/51MYGGGyv8L.jpg)
![Headphone Battery Li-Polymer 350 mAh/1.29wh 3.7 V suitable for SONY - Image 5](https://m.media-amazon.com/images/I/61sEzC9HMuL.jpg)

---

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**Shop now:** [https://www.desertcart.fi/products/102597867-headphone-battery-li-polymer-350-mah-1-29wh-3-7](https://www.desertcart.fi/products/102597867-headphone-battery-li-polymer-350-mah-1-29wh-3-7)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-13*