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tado° Smart Radiator Thermostat battery: 2 × AA

The tado° Smart Radiator Thermostat takes two AA 1.5V batteries.

AA

AA× 21.5V batteries

Also sold as LR6, E91, MN1500, 15A · AA details

Source: tado° Smart Radiator Thermostat support page

Varta Longlife Power AA 8 pack at Amazon for AA 1.5V alkaline battery (affiliate link, opens in new tab)Energizer Max AA at Amazon (affiliate link)

Before you swap it

  • Change all two at once. Don't mix old batteries with new ones or one brand with another, since the weakest one in the set drags the others down with it.

Quick answers

What battery does the tado° Smart Radiator Thermostat take?

Two AA 1.5V batteries.

Is LR6 the same as AA?

Yes. LR6, E91, MN1500 and 15A are all the same cell as AA, sold under another name.