---
product_id: 87180611
title: "SM-621/621D-BAT"
brand: "simolio"
price: "NT$1732"
currency: TWD
in_stock: true
reviews_count: 8
url: https://www.desertcart.tw/products/87180611-sm-621-621d-bat
store_origin: TW
region: Taiwan
---

# 1000mAH Current 7.4V Voltage Overcharge Protection SM-621/621D-BAT

**Brand:** simolio
**Price:** NT$1732
**Availability:** ✅ In Stock

## Summary

> 🔊 Elevate Your Audio Experience!

## Quick Answers

- **What is this?** SM-621/621D-BAT by simolio
- **How much does it cost?** NT$1732 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/87180611-sm-621-621d-bat)

## Best For

- simolio enthusiasts

## Why This Product

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

## Key Features

- • **🔒 Durable Design:** Metal casing ensures longevity and resistance to deformation.
- • **🛡️ Safety First:** Equipped with advanced protection circuits to prevent overcharging.
- • **🔋 Power Up Your Sound:** Experience uninterrupted audio with a robust 7.4V voltage.
- • **📡 Seamless Compatibility:** Perfectly designed for Simolio wireless TV speakers SM-621 and SM-621D.
- • **⚡ Long-Lasting Performance:** Enjoy extended playtime with a powerful 1000mAH capacity.

## Overview

The SIMOLIO Rechargeable Li-ion Battery SM-621, SM-621D is a high-performance battery designed specifically for Simolio wireless TV speakers. With a voltage of 7.4V and a capacity of 1000mAH, this upgraded battery features advanced protection circuits to prevent overcharging and overdischarge, ensuring safety and longevity. Its durable metal casing adds an extra layer of protection, making it the ideal power source for your audio needs.

## Description

SIMOLIO Rechargeable Li-ion Battery SM-621,SM-621D

## Features

- Brand new wireless TV speaker Li-ion battery.
- Voltage: 7.4V Current:1000mAH.
- Can be used with Simolio wireless tv speaker SM-621 and SM-621D
- UPGRADED BATEERY: The upgraded battery has protection circuits and microcontrollers limiting the charge to the battery, preventing battery from overcharging and overdischarge. Metal casing is added to avoid deforming.

## Product Details

- **Number of Batteries:** 1 Lithium Polymer batteries required. (included)
- **Brand:** SIMOLIO
- **Battery Cell Composition:** Lithium Polymer
- **Battery Capacity:** 1000 Milliamp Hours
- **Recommended Uses For Product:** For SIMOLIO TV speakers

## Images

![SM-621/621D-BAT - Image 1](https://m.media-amazon.com/images/I/51HDFv2DAYL.jpg)

## Questions & Answers

**Q: The battery that came with my wireless tv speaker has some type of padding on it and the compartment will not close. Is it removable? I had to tape it**
A: Please up load a photo. I don't think any padding should be removed. What specifically do you mean by padding? Is it a new purchase? 
The battery in our lasted a long time but it expanded when it got older, then we used tape to keep it in. I ordered a new one that fit right in.

**Q: Why would my battery swell up?**
A: If you use AC adapter to power the speaker, please remember to take off the battery from speaker to protect battery.
Please contact our support team or send Amazon message to us. We would like to send you a replacement.

**Q: Unit "beeps" after about every minute or so. It is charged. Could this possibly need new battery? Only 5 months old.**
A: The beep sound seems to be a low battery indication, how about the LED indicator? In addition, did you try to directly connect the speaker to the power supply to charge?

**Q: When will this be in stock? My 95 year old mother in law loves this speaker, it works great, the battery just went out. I can't find a source anywhere**
A: If the unit will no longer charge you can purchase a new battery. They sell the batteries on Amazon.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Replacement battery
*by A***R on September 9, 2025*

Works like original and was very easy to install.

### ⭐⭐⭐⭐⭐ Rechargeable batteries
*by D***E on February 26, 2025*

An exact replacement for my remote speakers battery. The original bloated and lost charge so I ordered this one. It works just fine.

### ⭐⭐⭐⭐⭐ Works
*by S***B on August 2, 2025*

Works beautifully

## Frequently Bought Together

- SIMOLIO Rechargeable Li-ion Battery SM-621,SM-621D
- SIMOLIO Wireless Portable TV Speakers with TV Audio Listening Assistance, Voice Highlighting TV Speakers for Hard of Hearing, Seniors and Elderly, 100ft Range, Extra Headset & 2 Adapters -SM-621D

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**Shop now:** [https://www.desertcart.tw/products/87180611-sm-621-621d-bat](https://www.desertcart.tw/products/87180611-sm-621-621d-bat)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-06-02*