Hero and Go! Monitor Batteries

If your Snuza® Hero or Go! have an SE on the label, use only CR2 batteries. You can purchase your CR2 battery from any retailer that sells batteries. If it does not say SE on the label of your monitor, use a CR14250 3.0v battery. Contact your nearest Distributor to order a replacement battery.

If you have the HERO or GO with the letters SE next to the word HERO or GO on the product label, you need one of the following batteries:

• Snuza CR2 Battery (3-Volt)
• Energizer CR2 (3-Volt)

If you have the HERO without the letters SE next to the word HERO on the product label, you need one of the following batteries:

• Snuza CR14250 Battery (3-Volt)
• SAFT LS14250 Battery (3.6-Volt)

We have tested the SAFT LS, and will work as a substitute.

Batteries have three parts, an anode (-), a cathode (+), and the electrolyte. The cathode and anode (the positive and negative sides at either end of a traditional battery) are hooked up to an electrical circuit. The chemical reactions in the battery causes a build-up of electrons at the anode.

If the SAFT battery has been sitting on the shelf for a while, the chemical reactions become dormant, so to say, and there are no electrons being built up for the battery to work efficiently, which means that initially it will indicate that the battery is low. All you do then is switch it on and off a few times (5 to 10) which should reverse the dormant state, and help with the build-up of electrons.

The device should then work fine.

Replacing the Battery

The batteries used in the Snuza® movement monitors are user-replaceable. The life of the replaceable Snuza® battery depends entirely on usage time. Battery life will vary significantly depending on the average daily duration of use and/or alarm duration and/or number of alarms. Turning it on and off unnecessarily also shortens the battery life. If the number of alarms is high, always check the diaper fitment.

If the Snuza® Battery Indicator Light shows that the battery is depleted or nearing depletion (flashing orange or red), do not use the monitor again until you have replaced the battery. Use onlyCR14250 3.0v batteries in the monitor if the label does not say SE. If the label says SE only, use CR2 batteries.

  • Remove the Battery Cover on the underside of the unit.
  • Remove the depleted battery.
  • Insert the new battery, ensuring that the polarity is correct.
  • Replace the Battery Cover and ensure that it is correctly closed.
  • Test the unit by switching on and ensuring that the Battery Indicator Light flashes green.
  • If the unit starts emitting a beep after the battery has been replaced, simply press the ON/OFF and MODE/OFF buttons simultaneously to turn it off.

**Please note that the product guarantee does not apply to the battery.


The battery must be disposed of in accordance with your country’s laws governing the disposal and recycling of batteries.