How to Change Batteries in a Blink Camera (All Models)

To change batteries in a Blink camera, you need the correct number of AA lithium batteries and the right way to open your particular model. Most Blink Outdoor and Indoor cameras use two AA batteries, while newer Blink battery doorbells use three. This guide covers the Outdoor 2K+, Outdoor 4, third-generation cameras, XT and XT2, current Blink doorbells, and the battery-powered floodlight mount.

Blink Battery Quick Reference

Blink now sells several battery-powered models, and they do not all use the same number or size of batteries. Check the camera name in the Blink app if you are unsure which generation you own.

Which Batteries Should You Use?

Blink specifies AA 1.5-volt lithium non-rechargeable batteries for its battery-powered cameras and doorbells. The safe replacement is Energizer Ultimate Lithium AA batteries. Replace the entire set at the same time. Do not mix an old battery with a new one or combine brands and battery chemistries.

Alkaline AA batteries may power the camera for a while, but Blink does not recommend them. Standard NiMH rechargeables supply 1.2 volts instead of the required 1.5 volts and can cause short runtime, premature low-battery warnings, or unreliable operation. Do not use rechargeable lithium-ion cells with a higher native voltage merely because they are labeled AA.

For the full explanation of battery chemistry, cold-weather performance and rechargeable alternatives, see my guide to the best batteries for Blink cameras. This page stays focused on replacing them correctly.

How to Change Batteries in the Blink Outdoor 2K+ or Outdoor 4

The Outdoor 2K+ and Outdoor 4 use a screw-secured rear cover. Blink includes a right-angle opening tool with the camera. A wide flat-head screwdriver can work if the original tool is missing, but use light pressure so you do not damage the screw slot or surrounding plastic.

1. Remove the camera from its mounting bracket and place it face-down on a clean, soft surface.
2. Insert the opening tool into the rear screw and turn it counterclockwise until the cover is released. The screw is captive and does not need to come out of the cover.
3. Lift the rear cover carefully. Do not pry against or cut the weather-sealing gasket.
4. Remove both old batteries and insert two new AA 1.5V lithium batteries. Match the positive and negative markings inside the compartment.
5. Inspect the perimeter seal for dirt, hair or damage. Align the cover and press it evenly into place.
6. Turn the screw clockwise until the cover is snug and sits evenly. Do not overtighten it.
7. Remount the camera, refresh its thumbnail and open Live View to confirm that it is online.

How to Change Batteries in the Outdoor or Indoor (3rd Gen)

The third-generation Outdoor and Indoor cameras also use two AA lithium batteries behind a screw-secured rear cover. Remove the camera from the mount, loosen the rear screw with the opening tool or a wide coin, and lift the cover. Replace both batteries, check the polarity, inspect the seal and reinstall the cover until it is flush.

The Outdoor and Indoor versions share the same battery procedure. The important difference is placement: the Outdoor model is designed for weather exposure, while the Indoor model is not.

How to Change Batteries in the Blink XT2 or XT

The XT and XT2 use a gray release latch instead of the screw found on newer Outdoor cameras. Remove the camera from its mount, release the gray latch on the back and lift away the cover. Replace both AA lithium batteries with the polarity shown inside the compartment, then press the cover back into place until the latch is fully engaged.

Check the rubber seal before reinstalling an XT or XT2 outdoors. These cameras are old enough that a flattened, cracked or dirty gasket is more likely than it is on a newer model.

How to Change Batteries in a Blink Video Doorbell

The Battery Doorbell 2K+ and second-generation Video Doorbell use three AA lithium batteries. The original first-generation Video Doorbell uses two. Identify the model before buying batteries because the doorbells look similar from the front.

1. Insert the Blink release key into the slot at the bottom of the doorbell and press until the doorbell releases from its mounting plate.
2. Pull the doorbell away from the plate. Do not tug on connected doorbell wires.
3. Turn the unit over, lift the battery-cover latch and remove the rear cover.
4. Replace all batteries with new Energizer AA 1.5V lithium non-rechargeable cells, following the polarity markings.
5. Reinstall the cover, align the doorbell with its mounting plate and press until it clicks securely into place.
6. Restore breaker power if applicable, press the doorbell button and confirm the event in the Blink app.

Blink Outdoor 4 Floodlight Battery Replacement

The wire-free Outdoor 4 Floodlight has two separate power systems. The Outdoor 4 camera uses its own two AA lithium batteries, while the floodlight mount uses four D-cell batteries. A low camera battery can stop video while the lights still work. Depleted floodlight batteries can stop the lights even though the camera remains online.

If only one part of the system has failed, replace the batteries for that component first. The hardwired Blink Wired Floodlight Camera is a different product and does not contain replaceable batteries.

What to Do After Replacing the Batteries

Blink does not provide a precise battery percentage for these cameras. The app reports a general battery status, so a new set may still appear simply as OK. The better test is to refresh the thumbnail, open Live View and trigger one short motion recording.

If the camera remains offline, remove both batteries for at least 10 seconds, check their polarity and reinstall them. If that does not work, try another new matched pair. Clean dirty battery contacts with a dry lint-free cloth. Do not scrape the contacts with a metal tool or apply household cleaners inside the compartment.

How to Make Blink Batteries Last Longer

Blink rates several wire-free models for up to two years, but that estimate depends on settings, use and environmental conditions. A camera facing a busy street can consume batteries far faster than one watching a quiet side yard.

• Reduce unnecessary motion: Tighten activity zones and lower sensitivity enough to avoid trees, traffic and other constant movement.
• Shorten clips: Record long enough to capture useful activity without keeping the camera awake after the event has ended.
• Increase retrigger time: A longer delay reduces repeated clips from one continuous event.
• Limit Live View: Streaming video keeps the camera awake and is one of the fastest ways to reduce battery life.
• Check signal strength: A poor connection can force the camera to work harder when communicating with the Sync Module and network.
• Expect seasonal variation: Cold weather can reduce available battery capacity even when you use the correct lithium cells.

For a compatible Outdoor 4 or Outdoor 2K+ in a hard-to-reach location, the Blink Battery Extension Pack adds another pair of AA lithium batteries and can extend the rated interval between changes. USB-C and solar power are alternatives when you want to eliminate routine battery swaps.

Frequently Asked Questions About How to Change Batteries in a Blink Camera

Can I use alkaline batteries in a Blink camera?

They may power the camera temporarily, but Blink specifies AA 1.5V lithium non-rechargeable batteries. Alkaline batteries generally provide shorter service life and poorer cold-weather performance.

Can I replace only one dead Blink battery?

Replace the complete set. Mixing a partly discharged battery with a new one can cause uneven performance and shorten the life of the replacement.

Why does my Blink camera still say battery OK instead of 100%?

Blink reports broad battery status rather than a precise percentage on these models. OK is the expected reading after a successful replacement.

Does the Blink Mini 2K+ have a backup battery?

No. The Mini, Mini 2, Mini 2K+ and Mini Pan-Tilt require plug-in power and do not contain user-replaceable backup batteries.

Does hardwiring a Blink Video Doorbell remove the need for batteries?

Not on the first- or second-generation Blink Video Doorbell. Those models continue to operate from AA lithium batteries when connected to compatible doorbell wiring. The Wired Doorbell 2K+ is the battery-free model.

For more help, visit my Blink camera reviews and guides, compare Blink battery options, or see how to power a Blink camera without batteries.