This has to be fixed. I have 11 around my house and replacing 11 sets of double AA batteries every 9months or so is ludicrous and wasteful, goes against the green savings made elsewhere and the credentials of this organisation. Please fix. Soon.
Please make rechargeable batteries usable with Tado. It's amazing it's not already implemented.
Completely crazy that an energy efficiency product doesnt allow use of rechargeable batteries.
Unlikely to happen because Tado cannot reliably predict the chemistry or age of your rechargeable battery.
Regular batteries discharge in a linear manner, making the voltage drop down from 1.5V predictable. Rechargeable batteries discharge in a non-linear manner and the pattern of that discharge varies by brand and age of the battery. To overcome this Tado would need to use a sealed battery, similar to your smartphone.
Given the level of discussion, both here and other places, I am staggered Tado have not yet implemented a fix so that we can use rechargable batteries without having to have the 'low battery' notification constantly on.
At the very least, some proper feedback - indicating either an estimated implementation date or a technical explanation of why it can't be implemented, should be provided.
Come on Tado - show some customer consideration!!