Drayton Wiser Radiator Thermostat battery: 2 × AA
The Drayton Wiser Radiator Thermostat takes two AA 1.5V batteries.
AA
AA× 21.5V batteries
Also sold as LR6, E91, MN1500, 15A · AA details
Source: Drayton Wiser Wiser Radiator Thermostat support page
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 Drayton Wiser 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.