# eufy Security T8743 Rechargeable Battery Pack, 6,200 mAh

The eufy Security T8743 Rechargeable Battery Pack is a USB-C rechargeable replacement or backup pack listed for the Video Doorbell E340 and C31. Its 6,200 mAh capacity and clasp-style installation suit buyers wanting a swap-in power option, though the claimed run time depends on use.

- [Original product page](https://bargainpostbox.co.uk/product/eufy-security-t8743-rechargeable-battery-pack)
- [View offer](https://bargainpostbox.co.uk/visit/eufy-security-t8743-rechargeable-battery-pack)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: eufy Security
- Model: T8743
- Category: Electronics > Electronics Accessories > Batteries
- Price: 17.99 GBP
- Previous price: 29.99 GBP
- Discount: 40%
- Price checked: 2026-11-12T15:11:01.129Z
- Rating: 4.6 / 5
- Reviews: 1322

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- USB-C charging uses a cable type the listing says is used with other devices.
- The manufacturer claims up to 6 months of use from a single charge.
- An intuitive clasp is designed to make fitting and removal simple.

## Pros

- The listed E340 and C31 compatibility gives existing owners a clearly targeted spare-power option.
- USB-C charging avoids a proprietary charging connector claim.
- The clasp design is described as quick to install and remove.

## Specifications

### Capacity and charging
- Capacity: 6,200 mAh
- Charging connection: USB-C
- Battery cell type: Lithium Ion
### Compatibility and installation
- Listed compatible doorbells: Works with eufy Video Doorbell E340 &C31
- Installation feature: Intuitive clasp is designed to be simple and quick to use.
### Dimensions and installation
- Weight listed: 150 g
- Package dimensions: 13.1 x 10 x 3 cm; 150 g
### Identification
- Model: T8743

## Before you buy

- The manufacturer claims up to 6 months per charge, while customer feedback reports varied experience, including both around 22 days and less than two weeks. Actual run time is not guaranteed and may depend on use.

## A good fit for

- Owners of the eufy Video Doorbell E340 or C31 seeking a rechargeable spare or replacement battery.
- Buyers who want USB-C charging and a clasp-style pack for quick swapping.

## Less suited to

- Owners of doorbell models other than the listed E340 and C31 unless compatibility is confirmed.

## Customer feedback

Customer feedback describes easy installation and a good fit, with some customers reporting around 22 days of power and others saying the pack lasts less than two weeks. These differing experiences matter if you rely on long intervals between charging. The listing's up-to-six-month claim is a manufacturer claim, not a run time established by customer feedback.
- Positive themes: Customers describe the pack as easy to install and report that it fits well.
- Positive themes: Some customer feedback describes useful battery life and good value.
- Negative themes: Some customers report that the battery does not last more than two weeks.
- Mixed feedback: Reported battery life and durability vary, so experiences do not establish a consistent charging interval.

## Frequently asked questions

### Which doorbells is this battery pack listed for?
The listing names the eufy Video Doorbell E340 and C31. Confirm your exact doorbell model before ordering.
### How is the battery charged?
The listing specifies USB-C charging. It does not state whether a cable or charger is included.
### How long does one charge last?
The manufacturer claims up to 6 months, but customer feedback reports differing durations. Treat that figure as a maximum claim rather than a guaranteed run time.

## Alternative options

- [REACELL 3.7V 7000mAh Rechargeable Battery for Eufy E340 C31 Video Doorbell \| Backup Battery for Eufy E340 C31, Long-Lasting, Quick-Release, Easy to Instal&Remove, with USB-C Cable \(2026 New Version\)](https://bargainpostbox.co.uk/visit/eufy-security-t8743-rechargeable-battery-pack)
- [Mounting Bracket Anti-theft Video Doorbell for Eufy E340 Camera, No Drilling Adjustable Mounting Bracket Accessories for Eufy Doorbell Camera Mount, Apartment Doorbell Kits for](https://bargainpostbox.co.uk/visit/eufy-security-t8743-rechargeable-battery-pack)
- [EKJANEPE 4K HD Mini WiFi Hidden Camera, Wireless Indoor Security Cam \| with Night Vision/Motion Detection/Real-Time Video/Cloud&SD Storage Indoor Home Monitoring](https://bargainpostbox.co.uk/visit/eufy-security-t8743-rechargeable-battery-pack)
- [EZVIZ 3K 5MP Dual Lens WiFi Battery Security Camera, 180° View, CB30 Dual](https://bargainpostbox.co.uk/visit/eufy-security-t8743-rechargeable-battery-pack)
- [EZVIZ 3K 5MP Dual Lens WiFi Security Camera Outdoor Wireless,HB30 \| 180° Panoramic View, Human Vehicle Detection, 3K 5MP Dual Lens, Long Battery Life, Color Night Vision, IP65 Weatherproof](https://bargainpostbox.co.uk/visit/eufy-security-t8743-rechargeable-battery-pack)
- [HomiQ W8 3MP Window Security Camera, Dual Band WiFi Indoor Cam \(2-Pack\) \| AI Colour Night Vision, Auto-Focus Human Detection, No-Drill Stick-On Mount, 24/7 Recording](https://bargainpostbox.co.uk/visit/eufy-security-t8743-rechargeable-battery-pack)
- [REACELL 14.4V 4000mAh Replacement Battery for Eufy RoboVac 11 11S Battery \| Compatible for Eufy RoboVac 11 11S 11C 12 15C MAX 15T 25C G30 G40 30C 35C G20, Ecovacs Deebot N79 N79S DN622 Li-ion Battery](https://bargainpostbox.co.uk/visit/eufy-security-t8743-rechargeable-battery-pack)
- [aosu 3K Battery Video Doorbell Wireless, Radar Detection, 8G Local, 5G Wifi \| Long Battery Life, IR Night Vision, 166° View, 2-way Talk, 5MP, 3 Motion Detection, Security Front Door, Audio Alarm](https://bargainpostbox.co.uk/visit/aosu-video-doorbell-ultra-v8s-5mp-wireless)
- [Reolink 4K PTZ PoE Security Camera Outdoor, 6X Hybrid Zoom, TrackMix PoE \| Dual-Lens IP Camera, 355° Pan 90° Tilt, Auto Tracking, Color Night Vision, Human/Vehicle/Animal Detection, Two-Way Audio](https://bargainpostbox.co.uk/visit/reolink-trackmix-poe-4k-dual-lens-ptz-security-camera)
- [Reolink OMVI 3i PoE Security Camera Outdoor, 10MP+8MP Triple-Lens \| 10MP Dual-Lens Camera plus 8MP PT Camera, SyncTrack Auto Tracking, AI Video Search, Color & IR Night Vision, 24/7 Recording](https://bargainpostbox.co.uk/visit/reolink-omvi-3i-poe-outdoor-security-camera)
- [aosu T2 Pro 3K Security Cameras Wireless Outdoor, Dual Cam No Blind Spot \| 5MP 360° PTZ + 170° Wide-Angle, 8x Zoom, Solar Powered, AI Auto Tracking Human Vehicle, Color Night Vision, Local Storage](https://bargainpostbox.co.uk/visit/eufy-security-t8743-rechargeable-battery-pack)
- [REACELL V8 Battery for Dyson, 21.6V Lithium Replacement Battery 215681 \| Compatible for Dyson SV10 V8 Animal Absolute Motorhead Fluffy Cordless Vacuum Cleaner](https://bargainpostbox.co.uk/visit/eufy-security-t8743-rechargeable-battery-pack)

## Add-ons

- [eufy Security Video Doorbell E340, Dual Cameras with Delivery Guard 2K FHD \| Wireless Doorbell, No Monthly Fee, Built-in 8GB, Wired or Battery Powered, Colour Night Vision, AI Motion/Package Detection](https://bargainpostbox.co.uk/visit/eufy-security-t8743-rechargeable-battery-pack)
- [eufy Video Doorbell Chime 2, 10 Built-in Chimes \| 2.4 GHz and 5 GHz Dual-Band Wi-Fi Connectivity, Easy Setup, Bluetooth Auto-Pairing, Adjustable Volume up to 80 dB](https://bargainpostbox.co.uk/visit/eufy-security-t8743-rechargeable-battery-pack)

## Images

![eufy Security T8743 Rechargeable Battery Pack, 6,200 mAh — 1](https://bargainpostbox.co.uk/i/kDGspEI-9T7ElMal9TAzZ4u8GXq4BdHVuN2PZVtPXKbG1XQgO4S9v9gO0MHX9rVC6Pwf2KgpjZZOwzj4dR4IL4hpNmiBaPaSb97T6maQwt9H3bTqDvNA0M1b.jpg)

![eufy Security T8743 Rechargeable Battery Pack, 6,200 mAh — 2](https://bargainpostbox.co.uk/i/uckXWVaPWLSgiV9llE3RXre76WbcqjhVwMh5RhWlzW5yCMrViMuyWtO7x-VAWXiszaGVN3JM64KREbxi5El7x7JbG3veg2hoJZqECmyBcfUo3cm5enCEzPVF.jpg)

![eufy Security T8743 Rechargeable Battery Pack, 6,200 mAh — 3](https://bargainpostbox.co.uk/i/FeLxN2T-IEkVm8KiA755_RI7v91CKU-CQhpQdReM8orHfkmnkRgpJTPns1Q2nNcvwbqZDmIUBpfdcoJWOBzqRJx_igb8iUJWN7kmuQtAbEBdBHgcwVpweyMk.jpg)