Blink Battery Doorbell 2K+

Blink Battery Doorbell 2K+

4.1
164 ratings
Launch Year: 2026

Model: BDM00400U

$79.99
As an Amazon Associate I earn from qualifying purchases
Open selection
Our review

Blink Battery Doorbell 2K+ Review: A Cheap 2K Head-to-Toe Upgrade With a Few Connectivity Catches

Sharper 2K video and a full head-to-toe view at a budget price, held back by a fiddly setup, no included chime, and subscription-gated smart alerts.

The verdict

The Blink Battery Doorbell 2K+ is Blink's most affordable way to get a sharp, head-to-toe 2K view of your front door, and most owners are happy with the clearer image, improved night vision, and quick battery or wired install. It slots neatly into the Blink and Alexa ecosystem and can store clips locally on a Sync Module without a subscription, but the smart person and vehicle alerts, cloud video, and the best features need a paid plan, no indoor chime is included, and a noticeable minority run into fiddly setup and connectivity glitches. If you want a budget doorbell inside Blink and Alexa and can live with those caveats, it is strong value; if you need HomeKit, Google Home, or flawless out-of-the-box reliability, look elsewhere.

Best for
  • Budget buyers
  • Existing Blink or Alexa households
  • Renters wanting a battery install
  • Head-to-toe front-door coverage

Pros

  • Budget-friendly, especially within the Blink ecosystem
  • Sharper 2K head-to-toe view captures visitors and packages
  • Improved black-and-white night vision
  • Fast, easy battery or wired installation
  • Works with Alexa (live view and announcements on Echo Show) and IFTTT
  • Optional local storage on a Sync Module without a subscription

Cons

  • Setup and app onboarding can be fiddly for some buyers
  • Reports of connectivity glitches: short clips, missed alerts, or notification delays
  • No indoor chime included; a mechanical chime, Blink Chime, or Alexa device is needed
  • Person and vehicle detection and cloud video require a subscription
  • Tall 1:1 video can look cramped next to widescreen cameras
  • 2.4GHz Wi-Fi only; no Google Home, HomeKit, SmartThings, or Matter

Who is the Blink Battery Doorbell 2K+ for?

This is Blink's newest, third-generation battery video doorbell, built around a 2K (1920 by 1920) head-to-toe sensor with a tall 1:1 aspect ratio that shows visitors from face to feet and packages on the ground. It runs on three AA lithium batteries (rated up to around two years) or can be wired to existing doorbell wiring for backup power and to ring an in-home mechanical chime, and it needs a Blink Sync Module to work (the Sync Module Core is included in the System bundle). It connects over 2.4GHz Wi-Fi and fits best for budget buyers, existing Blink or Alexa households, and renters who want a quick battery install with a wide, head-to-toe view of the doorstep. If you rely on Apple HomeKit or Google Home, or want subscription-free smart alerts, read the caveats first.

What buyers love

Value and simplicity lead the praise. Owners repeatedly call setup fast and easy, often finishing in well under an hour and reusing the mounting holes from an older Blink doorbell. The upgraded image is the other highlight: buyers describe the 2K video as noticeably sharper and less fisheyed than older or pricier rivals, with clearer black-and-white night vision and a wider, taller field of view that captures the whole doorway. Many like the reliable motion notifications with text descriptions of what is approaching, the flexibility of battery or wired power, and how neatly it works alongside other Blink cameras and Alexa devices (you can view the feed and get announcements on an Echo Show). Blink's customer support also earns repeat praise for helping resolve issues, and several owners note this is their second or third Blink doorbell.

What to know before you buy

The most common gripes are about setup and reliability rather than the hardware. A meaningful minority report a painful onboarding (a confusing quick-start guide, app error codes, or trouble linking to Wi-Fi) and post-install glitches such as very short recordings, dropped motion notifications, or a delay between the button press and the alert. No indoor chime is included, so to hear a ring you either wire the doorbell to an existing mechanical chime or buy a Blink Mini, Blink Chime, or compatible Alexa device separately. The smart extras also cost more: person and vehicle detection, cloud video, and photo capture require a subscription, though basic local clip storage on a Sync Module (via USB) does not. The tall 1:1 view divides opinion, with some loving the head-to-toe framing and others finding the square video looks shrunken next to widescreen cameras. A few note the unit is slightly larger than the previous generation, so old backplates may not fit, and battery drain can be heavy for the unlucky. It is 2.4GHz Wi-Fi only, with no Google Home, Apple HomeKit, SmartThings, or Matter support.

Is the Blink Battery Doorbell 2K+ worth it?

For a low-cost doorbell inside the Blink and Alexa world, the Battery Doorbell 2K+ delivers where it counts: a clearer 2K head-to-toe image, better night vision, easy battery or wired installation, and optional subscription-free local storage. The trade-offs are a setup that can be fiddly, occasional connectivity bugs, no chime in the box, and a subscription for the smart alerts and cloud recording that many buyers will want. Buy it if you want an affordable, easy Blink doorbell and can accept those caveats; if you need rock-solid reliability out of the box or HomeKit and Google Home support, spend more elsewhere.

Frequently asked questions

Does the Blink Battery Doorbell 2K+ need a subscription?

Not to work, but to get the most out of it. Live view, two-way talk, and basic motion alerts work without a plan, and you can store clips locally on a compatible Sync Module (via USB) with no subscription. However, cloud video storage plus person and vehicle detection require a paid Blink subscription.

Does it come with a chime?

No. A dedicated indoor chime is not included. The doorbell can ring an existing in-home mechanical chime if you wire it to your doorbell wiring, or you can add a Blink Mini, Blink Chime, or a compatible Alexa device (each sold separately) to hear alerts indoors.

Does it work with Alexa, Google Home, or Apple HomeKit?

It works with Amazon Alexa, including live view and doorbell announcements on Echo Show devices, and with IFTTT. It does not support Google Home, Apple HomeKit, Samsung SmartThings, or Matter.

Is it battery-powered or wired?

Both options work. It runs on three AA lithium batteries, rated up to around two years, or you can connect it to existing doorbell wiring for backup power and to ring an in-home mechanical chime. Either way it requires a Blink Sync Module, and the Sync Module Core is included in the System bundle.

How good is the video and field of view?

It records 2K video at 1920 by 1920 resolution with a tall 1:1 head-to-toe view (about 140 degrees horizontal and vertical), so you see visitors from head to toe and packages on the ground. It also has IP65 weather resistance, a color low-light view, and infrared black-and-white night vision out to roughly 33 feet.

What are the main downsides?

The most common complaints are a sometimes-fiddly setup and app onboarding, occasional connectivity glitches (short recordings, missed motion alerts, or notification delays), no chime in the box, and a subscription requirement for smart alerts and cloud storage. The square video framing and a slightly larger body than the previous model also bother some owners.

At a glance

Summary

Everything this doorbell supports, grouped by category.

Size & Materials
Weather Resistance (IP65)5.1 × 1.9 × 1.3 in (130 × 48 × 34 mm)4 oz (113 g)Available in colors
Power
WiredRechargeable Battery (3x AA)
Connectivity
2.4 GHz WiFi
Integrations
AlexaIFTTT
Storage
Cloud (Subscription required)
Alerts
MotionPeople (Subscription required)Vehicles (Subscription required)

Price History

Loading price history...

Company
Blink logo

Blink

4.3/ 5 avg ratingUSA flagHeadquartered in USA

Blink, owned by Amazon, makes affordable, battery-powered smart security cameras and video doorbells. Its products are known for long battery life and simple setup, with local storage available through the Blink Sync Module plus optional cloud plans. Blink cameras integrate tightly with Alexa for live view and voice control.

Full specifications

Every spec, organized

Browse the full breakdown by category. Tap the on any row for what it means, or the for sources and documentation.

Size & Materials

Weather Resistance

IP65

Dimensions

5.1 × 1.9 × 1.3 in (130 × 48 × 34 mm)

Weight

4 oz (113 g)

Available in colors

YES

Black, White

Power

Wired

YES

Rechargeable Battery

3x AA

Battery Life

2 years

Included accessories

Chime

NO

Connectivity

2.4 GHz WiFi

YES

5 GHz WiFi

NO

Ethernet

NO

Integrations

Google Home

NO

Alexa

YES

Apple HomeKit

NO

Samsung SmartThings

NO

Home Assistant

?

IFTTT

YES

Matter

NO

Hub

Zigbee Coordinator

NO

Thread Border Router

NO

Matter Bridge

NO

Storage

Internal

NO

MicroSD Card Slot

NO

Cloud

Subscription required

Video

HD Video

YES

2K Video

YES

HDR

NO

Black & White Night Vision

YES

Color Night Vision

YES

24/7 Live Streaming

NO

24/7 Video History

NO

Video Event History

YES

Offline Video Event History

NO

Powerless Video Event History

NO

Field of View

140° Horizontal / 140° Vertical / 173° Diagonal

Privacy Zone

YES

WebRTC

NO

RTSP

NO

Alerts

Motion

YES

People

Subscription required

Packages

NO

Animals

NO

Vehicles

Subscription required

Familiar Faces

NO

Motion Detection

Customizable Motion Zones

YES

Angle of Detection

140° Horizontal

Range of Detection

10m / 33ft

Features

Outdoor Custom Ringtone

?

Indoor Custom Ringtone

?

Voice Changing

NO

Automatic Replies

NO

Automations

?

More Doorbells

Compare these next

View all
Blink

More from Blink

View all
Stay in the loop

Smart Home Deals & News straight to your inbox

Join the newsletter and get the best smart home deals and new releases in your inbox.

Your subscription could not be saved. Please try again.
Your subscription has been successful.

Smart Home Deals & News straight to your inbox

Join the newsletter and get the best smart home deals and new releases in your inbox.