Blink cameras use AA lithium batteries, typically two per camera

Most Blink indoor and outdoor cameras run on two AA lithium batteries. Blink sells these as part of their system, but you can also use standard AA lithium batteries from other manufacturers — the camera does not care about the brand. Alkaline AA batteries will work in a pinch, but they drain much faster and are not recommended for regular use.

The reason Blink chose lithium over alkaline comes down to performance in cold weather and consistent voltage output over the battery's life. Alkaline batteries lose power gradually and perform poorly below freezing, which matters if your camera is outside or in an unheated space. Lithium batteries hold their voltage longer and work reliably even when it is cold.

A few Blink models — the Blink Video Doorbell and some older Blink XT cameras — use different power sources entirely. The Video Doorbell connects to your home's existing doorbell wiring and does not use batteries. The original Blink XT used a proprietary battery pack instead of standard AAs. If you own one of these, check your camera's manual or the label on the back to confirm what it needs.

Key Takeaways

  • Blink cameras use two AA lithium batteries, and you can buy any brand of AA lithium battery — you do not have to buy Blink's own batteries.
  • Alkaline AA batteries work but drain in weeks rather than months, so lithium is the practical choice for regular use.
  • Battery life ranges from three months to two years depending on how often your camera records and how cold the environment is.
  • The Blink Video Doorbell does not use batteries at all; it draws power from your doorbell wiring.
  • You can check your remaining battery level in the Blink app and set up notifications when batteries run low.

How long Blink batteries actually last

Battery life depends on how much your camera records. Blink estimates two years for a camera that records 10 to 15 times per day, but that number drops sharply if your camera is busier. A camera that records 40 times a day might last six months. A camera in a quiet hallway that records once a day could last two years or longer.

Cold weather shortens battery life significantly. If your outdoor camera is in a climate that stays below 40°F for months, expect the batteries to drain faster than Blink's estimates. The lithium batteries still work better than alkaline in cold, but the chemistry itself slows down in freezing temperatures.

Motion sensitivity and video quality also matter. A camera set to high sensitivity will record more clips and drain batteries faster. Recording in 1080p uses more power than 720p. Night vision mode uses more power than daytime recording. If you want longer battery life, lowering sensitivity or resolution in the Blink app will extend it.

Where to buy AA lithium batteries and what to expect

You can buy AA lithium batteries at any electronics retailer, drugstore, or online marketplace. Common brands include Energizer Ultimate Lithium, Duracell Ultra, and store brands from Target or Amazon. They cost between $1 and $3 per battery depending on the brand and where you buy them. Blink's own batteries are priced similarly.

Lithium batteries last longer than alkaline, but they also cost more upfront — usually two to three times as much per battery. Over a year, the math often favors lithium because you replace them less often. If you have multiple Blink cameras, buying in bulk (packs of four or eight) brings the per-battery cost down.

Some retailers sell rechargeable AA batteries marketed as "lithium" or "NiMH" (nickel-metal hydride). These are not the same as the disposable lithium batteries Blink recommends. Rechargeable batteries have lower voltage and may not work reliably in Blink cameras. Stick with disposable AA lithium batteries unless Blink's documentation specifically says rechargeable batteries are safe for your model.

How to replace batteries in your Blink camera

Replacing batteries takes less than a minute. Open the battery compartment on the back or bottom of your camera — it usually slides or pops open without tools. Remove the old batteries and note which way they were facing (the positive end should point toward the spring). Insert two new AA lithium batteries in the same direction and close the compartment.

After you replace the batteries, open the Blink app and check the battery status. It should show "Good" or a percentage within a few seconds. If it still shows "Low" or "Critical," the batteries may not be making good contact. Open the compartment again, remove the batteries, and reinsert them firmly. If the app still does not register the new batteries, try different batteries to rule out a defective pair.

The Blink app will send you a notification when batteries drop to "Low" — usually around 20 percent remaining. You do not have to replace them when ready, but you should have new batteries on hand. Once batteries reach "Critical," the camera may stop recording or lose connection to your network.

Why Blink chose batteries over wired power

Battery power means you can place a Blink camera anywhere without running an electrical cord or hiring an electrician. You can move it from room to room or take it with you. This flexibility is the main reason Blink cameras are popular for renters and people who do not want to drill holes or run wires through walls.

The trade-off is that you have to remember to replace batteries every few months to two years. If you forget, the camera stops recording and you lose security coverage until you swap in fresh batteries. Some people set phone reminders or buy extra batteries in bulk to avoid this problem.

If you want to avoid batteries altogether, Blink does make the Video Doorbell, which plugs into your existing doorbell wiring. You can also look at wired security cameras from other manufacturers, though they require an electrician or significant DIY work to install.

Checking battery status and getting alerts

The Blink app shows your camera's battery level on the device settings page. Open the app, tap on the camera, and look for "Battery" or "Power" in the device details. It will show either a percentage (like "87%") or a status word like "Good," "Low," or "Critical."

You can turn on low-battery notifications in the app settings. Go to the camera's settings, find "Notifications" or "Alerts," and enable the low-battery warning. The app will send you a push notification when the battery drops below a certain threshold, usually around 20 percent. This gives you time to buy new batteries before the camera stops working.

If you have multiple cameras, the app shows the battery status for each one on the main dashboard. This makes it straightforward to see at a glance which cameras need new batteries soon. Some people check this once a month as part of their routine home maintenance.

Frequently Asked Questions

Can I use rechargeable AA batteries in my Blink camera?

Rechargeable NiMH batteries have lower voltage than disposable lithium batteries and may not work reliably in Blink cameras. Blink recommends disposable AA lithium batteries. If you want to use rechargeable batteries, check your camera's manual first — some models may support them, but most do not.

What happens if I put in alkaline batteries instead of lithium?

Alkaline batteries will work, but they drain in weeks rather than months. They also perform poorly in cold weather and may not power the camera reliably if the temperature drops. If you are in a pinch, alkaline batteries will get you through a few days, but switch to lithium as soon as you can.

Do I need to buy Blink brand batteries?

No. Any brand of AA lithium battery will work in your Blink camera. Energizer, Duracell, Amazon Basics, and store brands are all compatible. Blink's own batteries are the same chemistry and cost about the same as other brands.

Why is my battery draining so fast?

Fast drain usually means your camera is recording very often — either because motion sensitivity is set too high or because there is a lot of activity in the camera's view. Cold weather also drains batteries faster. Try lowering motion sensitivity in the app or moving the camera to a warmer location. If the problem continues, the batteries themselves may be defective.

Can I use the camera while the batteries are charging?

Blink cameras do not have built-in charging. You remove the batteries and charge them separately in an external charger, or you buy new batteries. The camera cannot record while the batteries are out. If you want continuous power, consider the Blink Video Doorbell or a wired security camera instead.