---
product_id: 647988672
title: "RYX NX9 Smart Watch Battery, 380mAh 3.7v Compatible for Smart Watch DZ09 W8 Q18(2PCS)"
brand: "devmto"
price: "1099316₫"
currency: VND
in_stock: false
reviews_count: 1
url: https://www.desertcart.vn/products/647988672-ryx-nx9-smart-watch-battery-380mah-3-7v-compatible-smart
store_origin: VN
region: Vietnam
---

# 3.7V stable voltage Compact 31x24x5.1mm size 380mAh high capacity RYX NX9 Smart Watch Battery, 380mAh 3.7v Compatible for Smart Watch DZ09 W8 Q18(2PCS)

**Brand:** devmto
**Price:** 1099316₫
**Availability:** ❌ Out of Stock

## Summary

> 🔋 Power your day, the smart way!

## Quick Answers

- **What is this?** RYX NX9 Smart Watch Battery, 380mAh 3.7v Compatible for Smart Watch DZ09 W8 Q18(2PCS) by devmto
- **How much does it cost?** 1099316₫ with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/647988672-ryx-nx9-smart-watch-battery-380mah-3-7v-compatible-smart)

## Best For

- devmto enthusiasts

## Why This Product

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

## Key Features

- • **All-day Power Boost:** Stay connected longer with a robust 380mAh battery that outlasts the competition.
- • **Rapid Recharge Ready:** High-quality Lithium-ion cells deliver fast charging and consistent power output.
- • **Safety First, Always:** Built to meet strict industry standards for durability and safety, so you can trust every charge.
- • **Seamless Fit, Zero Bulk:** Precision-engineered 31x24x5.1mm dimensions ensure a sleek, secure fit inside your smartwatch.
- • **Upgrade Your Smartwatch Life:** Extend your device’s uptime and never miss a notification or app alert again.

## Overview

The RYX NX9 Smart Watch Battery is a high-capacity 380mAh, 3.7V Lithium-ion replacement battery designed for DZ09, W8, and Q18 smartwatches. Its compact 31x24x5.1mm size ensures a perfect fit without added bulk, providing reliable, long-lasting power with fast recharge capabilities and industry-standard safety.

## Description

This high-capacity 380mAh 3.7V battery is perfect for keeping your smartwatch running all day long. At 380mAh it provides extended use on a single charge compared to lower capacity batteries. The compact dimensions ensure it fits securely inside your device without adding unwanted bulk. Built with high-quality Lithium-ion cells, it charges quickly and delivers reliable power with every use. A safe and durable replacement, this battery meets all industry standards for performance and safety. Extend your smartwatch's uptime and enjoy continuous access to notifications, apps and more between charges with this robust and dependable battery.

Review: Old battery. - They didn't last more than 3-4 hours.

## Features

- Voltage: 3.7V
- Capacity: 380mAh
- Dimensions: 31 x 24 x 5.1 mm
- If you are looking for a long-lasting, high-capacity, safe, and reliable battery for your smartwatch, this battery is a great option.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D4XZX19R |
| Best Sellers Rank | 329,913 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 118 in Sports Technology Batteries |
| Guaranteed software updates until | unknown |
| Item model number | RYX NX9 |
| Manufacturer | DEVMTO |

## Product Details

- **Battery capacity:** 380 Milliamp Hours
- **Battery cell composition:** Lithium Ion
- **Brand:** DEVMTO
- **Number of batteries:** 2 Lithium Ion batteries required.
- **Recommended uses for product:** smart watch

## Images

![RYX NX9 Smart Watch Battery, 380mAh 3.7v Compatible for Smart Watch DZ09 W8 Q18(2PCS) - Image 1](https://m.media-amazon.com/images/I/51bZPk4Rx-L.jpg)

## Customer Reviews

### ⭐ Old battery.
*by M***E on 16 September 2024*

They didn't last more than 3-4 hours.

## Frequently Bought Together

- RYX NX9 Smart Watch Battery, 380mAh 3.7v Compatible for Smart Watch DZ09 W8 Q18(2PCS)
- YiKaiEn 6mm Magnetic USB DC Charger Cable, 2.7ft Replacement Oval Base Charging Cord for Rechargeable Toys, Massagers, Electric Toothbrushes,Children's Watches, Dog Trainer, Facial Cleanser
- 2 Pack SD Card 8GB with SD Adapter, High Speed Memory Card, UHS-I C10 A1 Memory TF Card for Tablet/Mobile Phone/Camera/Car Audio/Game Console (TF162 Red Gold 8GB)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.vn/products/647988672-ryx-nx9-smart-watch-battery-380mah-3-7v-compatible-smart](https://www.desertcart.vn/products/647988672-ryx-nx9-smart-watch-battery-380mah-3-7v-compatible-smart)

---

*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-01-23*