Welcome to the brand new Panasonic Eneloop AA rechargeable batteries with improvements in performance and sustainabiltiy. These new Panasonic Eneloop rechargeable AA batteries hold even more energy and have an improved capacity of 2000mAh. This new version has up to 7% more capacity and will perform outstandingly well in demanding situations. The Panasonic Eneloop AA batteries are the latest multi-purpose batteries by Panasonic (formerly Sanyo Eneloop) providing long-life, pre-charged, energy and money saving, eco-friendly rechargeable batteries. These batteries benefit from superior performance even at low temperatures down to -20 ℃ making them suitable for various conditions and occasions. The Eneloop range comes in three flavors of AA and AAA batteries. The standard Eneloop batteries have a 1,900- or 750-mAh capacity, can be recharged up to 2,100 times, and retain 70 percent of their capacity after 10 years in storage. The Eneloop Pro has a 2,500- or 930-mAh capacity, can be recharged up to 500 times, and retains 85 percent of its capacity after a year in storage. The Eneloop Lite has 950- or 550-mAh capacity, can be recharged up to 3,000 times and retains 70 percent of its capacity after five years in storage.

My understanding regarding other brands and capacities is that there is a question mark over physical fit. That would include the 2500 LADDAs, just like the larger Eneloops. Many customers and professional users will have bought and used this product under the Sanyo brand name. No, it is not necessary to fully discharge these batteries before recharging as they do not suffer from so called memory effect. These new Panasonic Eneloop AA batteries can be recharged up to 2100 times. These revolutionary low self discharge rechargeable batteries retain 70% of their charge for up to 10 years. The Panasonic Eneloop AA rechargeable batteries are pre-charged using solar energy.

Cancellations

I think this is why Tado doesn't recommend other types of batteries. By observing their "very diligent" documentation style I can imagine that they don't want to recommend inserting fingers or tweezers into the battery compartment in case things go wrong. They're on the charger now, so far too early to comment on performance in the long term, but I tried two pairs in one of my Tado SRTs and the fit was easy peasy. Also, no problem to operate the SRT with the "ready to use" charge they came with. apparently the specific type of battery. eg Panasonic eneloop 1900mAh is important. Perhaps tado help are confusing the issue, and it's really about SIZE not TYPE, and its other issues that are causing battery failure. Perhaps it's both. But they need to be clear.

Designed to be used for the regular battery consumers and professionals the Panasonic Eneloop rechargeable batteries are the perfect choice for powering medium to high current consuming devices such as Digital Cameras, torches, game controllers, radio-controlled toys and a range of household devices.So in essence seems to me there are 3 design issues with the radiator thermostat in connection with battery use that I have discovered. Pretty major I think and im mulling getting rid of them Recycle responsibly, a wide range of schemes are available. Most batteries rechargeable or non-rechargeable can be recycled.

https://community.tado.com/en-gb/discussion/3099/released-rechargeable-batteries-in-smart-radiator-thermostats-va02-hardware-revision Also, thinking this hypothesis out loud - What if VERY cheap non-standard battery types tend to heat up (event) at mechanically idle current and thus cause reading error? (I don't think anybody will do that though :) ) But the technology has improved over the years. Eneloop batteries outperform alkaline batteries in the cold (they work down to -20 degrees Celsius or -4 degrees Fahrenheit), and they can be recharged whenever you want (you don’t have to worry about the memory effect you get with some rechargeable batteries, which require you to only recharge them when empty).