---
product_id: 584735855
title: "Rechargeable Battery Pack with USB-C, Quick-Release Battery Pack, Long-Lasting Backup Power, 6,500 mAh Capacity, Easy to Install and Remove, Compatible with eufy Video Doorbell E340 &C31"
brand: "eufy security"
price: "HK$553"
currency: HKD
in_stock: true
reviews_count: 13
category: "Eufy Security"
url: https://www.desertcart.hk/products/584735855-rechargeable-battery-pack-with-usb-c-quick-release-battery-pack
store_origin: HK
region: Hong Kong
---

# USB-C fast charging Quick-release easy install 6,500 mAh long-lasting power Rechargeable Battery Pack with USB-C, Quick-Release Battery Pack, Long-Lasting Backup Power, 6,500 mAh Capacity, Easy to Install and Remove, Compatible with eufy Video Doorbell E340 &C31

**Brand:** eufy security
**Price:** HK$553
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your peace of mind with effortless, long-lasting energy!

## Quick Answers

- **What is this?** Rechargeable Battery Pack with USB-C, Quick-Release Battery Pack, Long-Lasting Backup Power, 6,500 mAh Capacity, Easy to Install and Remove, Compatible with eufy Video Doorbell E340 &C31 by eufy security
- **How much does it cost?** HK$553 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/584735855-rechargeable-battery-pack-with-usb-c-quick-release-battery-pack)

## Best For

- eufy security enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Power:** USB-C charging means no extra cables—just the one you already use for your devices.
- • **Snap-On, Snap-Off:** Intuitive quick-release clasp makes battery swaps effortless and tool-free.
- • **Half a Year of Peace:** Up to 6 months of uninterrupted backup power keeps your eufy doorbell always ready.
- • **Lightweight & Compact:** At just 150g, it’s a discreet powerhouse that fits perfectly without bulk.
- • **Officially Compatible:** Designed specifically for eufy Video Doorbell E340 & C31 for seamless integration.

## Overview

The eufy Security Rechargeable Battery Pack offers a robust 6,500 mAh lithium-ion capacity, delivering up to 6 months of backup power for your eufy Video Doorbell E340 & C31. Featuring USB-C fast charging and a quick-release clasp, it ensures easy installation and removal without tools. Lightweight and officially compatible, this battery pack guarantees reliable, uninterrupted home security with minimal hassle.

## Description

From the brand At eufy we believe all great smart home products need to be thoughtfully built from the start. From whole-home security to smart cleaning solutions, eufy's technology brings you expert protection and deep cleaning that's tailored to your lifestyle and creates human-first technology that enlivens the lives of everyone around you. Because care is what makes a house a home, everything we build is built with care for you. eufy, Built with Care At eufy we believe all great smart home products need to be thoughtfully built from the start. From whole-home security to smart cleaning solutions, eufy's technology brings you expert protection and deep cleaning that's tailored to your lifestyle and creates human-first technology that enlivens the lives of everyone around you. Because care is what makes a house a home, everything we build is built with care for you. eufy, Built with Care 2026 Valentine’s Day

Review: Reliable and easy to use - Great battery pack — easy to install, charges well, and holds power reliably. It’s made a noticeable difference to performance and gives real peace of mind. Solid quality and well worth it.
Review: Very good product - It works very well, good battery life!

## Features

- Long-Lasting Backup Power: 6,500 mAh capacity, up to 6 months of use from a single charge.
- Easy to Install and Remove: Intuitive clasp is designed to be simple and quick to use.
- Charge with USB-C: Power it up with the same cable you use for other devices.
- Official Accessory: Works with eufy Video Doorbell E340 &C31

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CJC3ZKBQ |
| Batteries | 1 C batteries required. (included) |
| Batteries Required? | No |
| Batteries included? | Yes |
| Battery Cell Type | Lithium Ion |
| Best Sellers Rank | 824 in DIY & Tools ( See Top 100 in DIY & Tools ) 34 in Home Security Systems |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,263) |
| Date First Available | 26 Sept. 2023 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Item Package Quantity | 1 |
| Item Weight | 150 g |
| Item model number | T8743 |
| Package Dimensions | 11.6 x 10.1 x 3.3 cm; 150 g |
| Part Number | T8743111,B0CJC3ZKBQ |

## Images

![Rechargeable Battery Pack with USB-C, Quick-Release Battery Pack, Long-Lasting Backup Power, 6,500 mAh Capacity, Easy to Install and Remove, Compatible with eufy Video Doorbell E340 &C31 - Image 1](https://m.media-amazon.com/images/I/71ZTQ82VrUL.jpg)
![Rechargeable Battery Pack with USB-C, Quick-Release Battery Pack, Long-Lasting Backup Power, 6,500 mAh Capacity, Easy to Install and Remove, Compatible with eufy Video Doorbell E340 &C31 - Image 2](https://m.media-amazon.com/images/I/61M7tXlCSrL.jpg)
![Rechargeable Battery Pack with USB-C, Quick-Release Battery Pack, Long-Lasting Backup Power, 6,500 mAh Capacity, Easy to Install and Remove, Compatible with eufy Video Doorbell E340 &C31 - Image 3](https://m.media-amazon.com/images/I/6139Z+Ifz-L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliable and easy to use
*by I***. on 22 December 2025*

Great battery pack — easy to install, charges well, and holds power reliably. It’s made a noticeable difference to performance and gives real peace of mind. Solid quality and well worth it.

### ⭐⭐⭐⭐⭐ Very good product
*by M***E on 21 January 2026*

It works very well, good battery life!

### ⭐⭐⭐⭐⭐ Much needed Back up battery
*by B***D on 13 January 2026*

Solid piece of kit well made does the job backing up the original battery.0

## Frequently Bought Together

- eufy Security Rechargeable Battery Pack with USB-C, Quick-Release Battery Pack, Long-Lasting Backup Power, 6,500 mAh Capacity, Easy to Install and Remove, Compatible with Video Doorbell E340/C31
- eufy Security Video Doorbell E340 (Battery Powered), Dual Cameras with Delivery Guard, 2K Full HD and Color Night Vision, HomeBase S380 Compatible, No Monthly Fee

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**Shop now:** [https://www.desertcart.hk/products/584735855-rechargeable-battery-pack-with-usb-c-quick-release-battery-pack](https://www.desertcart.hk/products/584735855-rechargeable-battery-pack-with-usb-c-quick-release-battery-pack)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-21*