How to Change Battery in Blink Camera | Swap in 3 Minutes

Changing the battery in a Blink camera is a quick process that requires removing the camera, opening its back cover, and installing two or three fresh AA 1.5V lithium non-rechargeable batteries with the correct polarity.

A low battery warning in the Blink app is the first sign your camera needs fresh power. The right battery choice matters more than most owners realize — drop in alkaline cells and the camera will lose live view, two-way talk, and cut its battery life by two-thirds. Blink builds three different release mechanisms across its product line, so matching the right steps to your specific camera is the only trick.

Which Battery Does a Blink Camera Take?

Every Blink camera requires AA 1.5-volt Lithium non-rechargeable batteries. Blink’s official documentation and support videos specifically recommend Energizer Ultimate Lithium as the brand that delivers the advertised battery life and full feature set.

How Many Batteries Does Each Blink Model Need?

The battery count depends entirely on which Blink camera you own. The table below lays out the requirements for every current model.

The included opening key — a small plastic tool — unlocks the cover on Outdoor and Doorbell models. If you’ve lost it, a coin or a flat-head screwdriver works just as well.

Step-by-Step: How to Change Blink Outdoor Camera Batteries (Models 2K, 2K+, 4)

This is the most common Blink camera on the market, and the procedure is identical across all Outdoor 4-series and 2K-series models.

1. Remove the camera from the mount. Grasp the camera body firmly and pull it straight away from the wall mount. It releases with a firm tug — no twisting required.
2. Turn off the system in the app. Open the Blink app and disable the system for the affected camera. This prevents motion alerts while you work and preserves sync module connection.
3. Unlock the back cover. Locate the small screw on the camera’s back. Insert the included opening key — or a coin or flat-head screwdriver — into the slot and turn counter-clockwise (left) until the screw rotates freely. You’ll feel it loosen completely.
4. Pry the cover open. Use the adapter end of the opening tool or the tip of a screwdriver to gently work the cover loose. Hold the camera on its side and pull upward on the cover.
5. Replace the batteries. Remove the old AA lithium batteries. Insert two fresh AA 1.5V lithium cells, matching the Positive (+) and Negative (-) markings inside the compartment. The camera clicks into place when the polarity is correct.
6. Reattach the cover. Align the small post on the inside of the back cover with the keyhole next to the USB port. Push the cover closed until it’s flush. Turn the screw clockwise (right) until snug — stop as soon as the cover is flush and doesn’t rock. Over-tightening can crack the plastic.
7. Remount and test. Push the camera back onto its wall mount until it clicks. Re-enable the system in the Blink app. Within 30 seconds the camera should show a healthy battery reading.

If your cover won’t seat flush, check that the alignment post is fully seated in the keyhole — this is the most common resealing mistake on Outdoor models and breaks the weather seal.

How to Change Batteries in a Blink Indoor Camera (1st Gen)

Indoor cameras use a simpler latch system with no screw.

1. Hold the camera with its lens facing away from you.
2. Locate the grey switch or latch on the bottom of the camera — there’s an arrow pointing toward the base.
3. Slide and hold the latch in the direction of the arrow while pulling up on the battery cover with your thumb. The cover pops off.
4. Remove old batteries and insert two fresh AA lithium batteries, matching polarity.
5. Snap the cover back on until it clicks firmly. You should hear a solid click confirming the air-tight seal is restored.

Blink Video Doorbell Battery Replacement

The doorbell is the only Blink model that carries an electrical hazard at its back plate — live current passes through the metal contact posts even when the doorbell is not ringing.

Warning: Turn off power at the circuit breaker that supplies your doorbell chime before removing the unit.

1. After power is off, press the opening key straight into the slot on the doorbell’s bottom edge. This releases the catch.
2. Pull the doorbell away from its mounting plate.
3. Flip the doorbell over. Lift the gray latch at the bottom edge to release the weather-resistant cover.
4. Remove old batteries and insert three AA 1.5V Lithium non-rechargeable cells, matching the polarity markings.
5. Push the bottom of the cover closed until the gray latch clicks. Remount the doorbell by hooking the top edge onto the plate and pressing the bottom until it snaps into place.

If your doorbell shows a battery warning soon after replacement, verify that all three batteries are fresh and that the polarity is correct — a single reversed battery causes the doorbell to report incorrectly.

Before you invest in a new system, check our roundup of the best battery-powered security cameras available right now — including models that last longer on a single charge.

Common Mistakes That Kill Blink Battery Life

Most battery-related problems with Blink cameras come from three easily avoidable errors.

Using alkaline batteries. This is the most expensive mistake. Blink’s own support callout is clear: only 1.5V non-rechargeable lithium batteries work.

Inserting batteries backward. A single reversed battery prevents the camera from turning on. Check the + and – symbols molded into the plastic inside the compartment before closing the cover.

Forcing the cover closed without aligning the post. On Outdoor models, the back cover has a plastic post that must seat into the keyhole beside the USB port. If it doesn’t align, the cover won’t seal and moisture gets inside.

Final Checklist for a Successful Blink Battery Swap

• Use AA 1.5V lithium non-rechargeable batteries — Energizer Ultimate Lithium is Blink’s recommended brand.
• Count your batteries: 2 for Outdoor, Indoor, XT, and XT2 models; 3 for Video Doorbell.
• Turn off the system in the Blink app before removal, and turn off power at the breaker for the Doorbell.
• Align the back cover’s post with the keyhole on Outdoor models — the cover must be flush on all four corners to seal.
• Dispose of old lithium batteries at a designated recycling drop-off, not in household trash.