‎How to Replace Batteries in SimpliSafe® Devices | SimpliSafe Support Home

How to Replace Batteries in SimpliSafe® Devices

Updated 

Gen 3 SimpliSafe® Keypad

​Does your Keypad look like the one pictured to the left? Then you're in the right place! You've got the Gen 3 SimpliSafe® system. If you purchased a system in 2017 or earlier, you have the Original SimpliSafe®. You can learn more about what batteries the Original SimpliSafe® devices use on our Help Center. You can also learn about the differences between our systems to determine which version you have.

With the exception of the Base Station, SimpliCam Indoor Camera, Smart Alarm Indoor Camera, and Key Fob, all of the components for our latest SimpliSafe have batteries that can and should be replaced periodically. When a sensor needs new batteries, your system will display an error message on the Keypad. 

The Base Station requires specific rechargeable batteries; and the SimpliCam Indoor Camera only functions when connected to power, rather than being battery operated. The Smart Alarm Wireless Indoor Security Camera has non-replaceable batteries within it, and can be used on battery or plugged into a power outlet.

Finally, the battery within the Key Fob cannot be replaced. If you require assistance with your Key Fob, please contact support.

Quickly access the product you want to replace batteries for from the list below:

Entry Sensor

Slide the Entry Sensor off of its mounting bracket. This will expose its CR-2032 Lithium 3V battery, which can then be replaced.

If you find that your sensor does not come back online after replacing the battery, it’s possible that it may have been offline for too long. The best step would be to remove the sensor from the SimpliSafe® Mobile App and then add it back to your system.

To remove your Entry Sensor:

  1. Open the SimpliSafe® Mobile App on your phone or tablet

  2. Choose My System from the bottom navigation bar

  3. Select Device Settings

  4. Tap on the sensor you wish to remove

  5. Choose ‘Remove Device’

Once you have removed your sensor, you can add it back using our Installation Guide.

Motion Sensor Gen 1

Slide the Motion Sensor off of its mounting bracket. This will expose its CR-123A Lithium 3V battery, which can then be replaced.

If the sensor does not come back online after changing the battery, it’s possible that your sensor has been offline for too long. The best step would be to remove the sensor from the SimpliSafe® Mobile App and then add it back to your system.

To remove your Motion Sensor Gen 1:

  1. Open the SimpliSafe® Mobile App on your phone or tablet

  2. Choose My System from the bottom navigation bar

  3. Select Device Settings

  4. Tap on the sensor you wish to remove

  5. Choose ‘Remove Device’

Once you have removed your sensor, you can add it back using our Installation Guide.

Motion Sensor Gen 2

The Motion Sensor Gen 2 takes a single CR-123A Lithium 3V battery and has a life expectancy of up to 4 years depending on placement and usage.

To change your Motion Sensor Gen 2 battery, slide the sensor up and off its bracket. Then, replace the battery and slide it back onto its bracket.

If the sensor does not come back online after changing the battery, it’s possible that your sensor has been offline for too long. The best step would be to remove the sensor from the SimpliSafe® Mobile App and then add it back to your system.

To remove your Motion Sensor Gen 2:

  1. Open the SimpliSafe® Mobile App on your phone or tablet

  2. Choose My System from the bottom navigation bar

  3. Select Device Settings

  4. Tap on the sensor you wish to remove

  5. Choose ‘Remove Device’

Once you have removed your sensor, you can add it back using our Installation Guide.

Glassbreak Sensor 

Slide the Glassbreak Sensor off of its mounting bracket. This will expose its CR-123A Lithium 3V battery, which can then be replaced.

If the sensor does not come back online after changing the battery, it’s possible that your sensor has been offline for too long. The best step would be to remove the sensor from the SimpliSafe® Mobile App and then add it back to your system.

To remove your Glassbreak Sensor:

  1. Open the SimpliSafe® Mobile App on your phone or tablet

  2. Choose My System from the bottom navigation bar

  3. Select Device Settings

  4. Tap on the sensor you wish to remove

  5. Choose ‘Remove Device’

Once you have removed your sensor, you can add it back using our Installation Guide.

Smoke & Carbon Monoxide Detector

The Smoke & CO Detector takes two CR-123A Lithium 3V batteries and has a life expectancy of up to 2 years, depending on placement and usage.

To change your Smoke & CO Detector battery, twist it off its bracket and open the back panel. Then, replace the lithium batteries and put the device back in place.

Smoke Detector

Twist the Smoke Detector counterclockwise to remove it from its mounting bracket.

Lift the hatch covering the battery compartment. This will expose the Smoke Detector’s Panasonic CR-123A Lithium 3V battery, which can then be replaced.

Carbon Monoxide Detector

Position the Carbon Monoxide Detector in your hand so that the “DO NOT PAINT” text is right side up, directly in front of you. The shape outlining the “CARBON MONOXIDE ALARM” text is the battery cover.

Press your finger into the oval-shaped button below the “DO NOT PAINT” text.

Once you feel the button compressing, slide the battery cover towards you. This will expose the three Energizer AA “Ultimate Lithium” 1.5V* batteries, which can then be replaced.

Keypad

Slide the Keypad up and off of its mounting bracket.

Slide the battery cover off of the back of the Keypad. This will expose four AA batteries, which can then be replaced.

Extra Siren

Slide the Siren up and off of its mounting bracket.

Using a Phillips-head screwdriver, remove the four screws that are holding the battery cover in place.

Remove the battery cover. This will expose four AA batteries, which can then be replaced.

Panic Button

Slide the Panic Button up and off of its mounting bracket. This will expose its CR-2032 Lithium 3V battery, which can then be replaced.

Smart Lock

The Smart Lock is powered by four (4) AA Alkaline batteries with the PIN Pad taking two (2) CR2450 Lithium Batteries. The batteries within the Smart Lock and PIN Pad have a life expectancy of 8-12 months, depending on usage.

To change your Smart Lock batteries, follow the steps below:

1. Slide the battery cover (the oval portion of the Lock labeled "SimpliSafe") off the device by pulling down on it.

This will expose the batteries and allow you to replace them.

2. Once the batteries have been replaced, put the battery cover back on and slide the compartment up until it clicks into place.

To replace the PIN Pad batteries, follow the steps below:

1. Use the pinhole key that was included in your Smart Lock box and press the tool into the pinhole on the bottom of the PIN Pad

If you do not have the pinhole key still, a SIM Card tool or a paperclip may also work

Smart Lock with pinhole key inserted into pinhole at the bottom of the pad.

2. Once the pinhole has been pressed, the top of the PIN Pad will pop off and you will then be able to replace the batteries

3. After the batteries have been replaced, press the PIN Pad top back on until it clicks into place

If the Smart Lock does not come back online after changing the battery, it’s possible that your lock has been offline for too long. The best step would be to remove the Smart Lock from the SimpliSafe® Mobile App and then add it back to your system.

To remove your Smart Lock:

  1. Open the SimpliSafe® Mobile App on your phone or tablet

  2. Choose My System from the bottom navigation bar

  3. Select Device Settings

  4. Tap on your Smart Lock

  5. Choose ‘Remove Device’

Once you have removed Smart Lock, you can add it back using our Installation Guide.

Temperature/Freeze Sensor

Slide the Temperature/Freeze Sensor up and off of its mounting bracket. This will expose its CR-2032 Lithium 3V battery, which can then be replaced.

If the sensor does not come back online after changing the battery, it’s possible that your sensor has been offline for too long. The best step would be to remove the sensor from the SimpliSafe® Mobile App and then add it back to your system.

To remove your Temperature Sensor:

  1. Open the SimpliSafe® Mobile App on your phone or tablet

  2. Choose My System from the bottom navigation bar

  3. Select Device Settings

  4. Tap on the sensor you wish to remove

  5. Choose ‘Remove Device’

Once you have removed your sensor, you can add it back using our Installation Guide.

Water Sensor

While holding the top part of the Water Sensor firmly with one hand, twist the bottom of the Water Sensor counterclockwise with your other hand. This will expose its CR-2032 Lithium 3V battery, which can then be replaced.

If the sensor does not come back online after changing the battery, it’s possible that your sensor has been offline for too long. The best step would be to remove the sensor from the SimpliSafe® Mobile App and then add it back to your system.

To remove your Water Sensor:

  1. Open the SimpliSafe® Mobile App on your phone or tablet

  2. Choose My System from the bottom navigation bar

  3. Select Device Settings

  4. Tap on the sensor you wish to remove

  5. Choose ‘Remove Device’

Once you have removed your sensor, you can add it back using our Installation Guide.

Wireless Outdoor Security Camera

The Wireless Outdoor Security Camera has a rechargeable battery with an expected 3-6 months lifetime, depending on usage and placement.

To remove the battery, simply untwist the cap on your Outdoor Camera. Then, use the tab on the battery to gently remove it from the battery compartment.

To charge your battery, you’ll need a USB-supported power brick that supports 5V, 7.5W+, 1.5A+ charging. Using the supplied cable, plug it into the power brick and the camera and charge your battery. To fully charge your battery, it can take up to 5 hours. You’ll know the battery is fully charged once all 3 lights are illuminated and no longer pulsing.

To replace your battery, slide it back into the battery compartment in the Outdoor Camera with the tab facing outwards. Then, twist the cap back onto the Outdoor Camera until you hear it click.

Still Need Help?

If the battery for your SimpliSafe® product was recently replaced, it can take up to 21 hours for the low battery or offline warning to clear. You can bypass this time frame with the following steps:

  1. Using your Keypad, press the Menu button

  2. Enter your Primary PIN

  3. Scroll until Test Mode is highlighted

  4. Use the rocker and tap to the right to enter Test Mode

  5. Locate the test button on your SimpliSafe® device and press it three times

    1. This will cause the device to check back in with the Base Station and should clear the low battery or offline warning

  6. If those steps do not work, we recommend removing the camera or sensor from your account and reinstalling it using the corresponding installation guide on our Help Center