Lithium or alkaline batteries play a huge role in keeping thermostats working in times of emergencies and power outages. But, how long do batteries last in a thermostat?
In general, lithium or alkaline batteries last between 8-12 months before they need replacing. Programmable battery-operated thermostats use AA or AAA batteries as a backup power source to run HVAC’s Thermostat when there is a power outage.
Low batteries affect thermostats that use more than one battery run on AA or AAA batteries. Thermostats using only one battery usually require either a 9-volt or a CR123A lithium battery which can last up to 3 years.
A thermostat with alkaline batteries will only work for 8-12 months before you need to replace them and reset the clock and time of day your HVAC system was running on the new ones.
On the other hand, lithium batteries can last many years if not used regularly; however, they don’t hold charges as long as regular alkaline batteries do. Alkaline batteries cost less than lithium batteries but they’re not rechargeable like lithium batteries are, plus they do not work in sub-zero temperatures.
The best thing to do is use lithium batteries when they’re ideal for your area, then alkaline batteries when it’s too cold or too hot outside for lithium batteries to function efficiently.
Thermostats help reduce energy costs and those with built-in rechargeable batteries are considered the best option because you can’t lose power with them and there is no need for replacements. Thermostats that only work with AA or AAA batteries are recommended for year-round use but be aware that they will need recharging after a couple of power outages before regular battery replacement times come around again.
How do you know if the thermostat needs new batteries?
Programmable thermostat’s battery status can be checked or observed via the unit’s display screen where a message indicating that the thermostat battery needs to be changed as they have low batteries.
In general, a thermostat will display a ” Replace Batteries” message once low battery is detected. Thermostats will display low battery notice at least 1-2 months before it completely runs out. The Thermostat will still function below the ” Replace Batteries” message but it loses some functionality.
Since the Thermostat uses batteries to back up power, once they run out of battery power it’s considered that there is no electricity in your Thermostat. That means that it can’t turn on or off automatically since there is no backup power source.
That being said, any smart Thermostat needs to have a backup energy system like batteries even if the Thermostat has an internal rechargeable lithium-ion battery. Any Thermostat with external AA or AAA batteries should be replaced after 8-12 months before they lose their charge completely and stop working during blackouts.
There are programmable battery Thermostats that will indicate low battery sooner than Thermostats that only use AA or AAA batteries. Check your Thermostat for indicator lights that signify low battery status. If you see low battery warning, replace the Thermostat’s batteries as soon as possible to ensure safety during power outages.
Battery-operated Thermostats are more common in areas where there is no electricity available on a regular basis so it’s important to buy the right Thermostat for your needs and consider how long do batteries last in a Thermostat? before purchase.
How often should you change batteries in a thermostat?
Keeping thermostat batteries regularly changed or recharged is vital to make sure that it functions as expected when you need it. So, If you own any kind of Thermostat with built-in rechargeable lithium-ion batteries, it’s best to fully charge them once they are depleted by leaving them plugged into an outlet for at least four hours. But, how often should you change batteries in a thermostat?
As a general rule, you should change your batteries once or twice every year. Alkaline or lithium-ion batteries can be changed anywhere between 6-12 months depending on how frequently your area experiences power outages.
Thermostat batteries can be charged even while they are in the Thermostat, although this method will require more frequent battery changes.
Thermostats that use external AAA or AA batteries only should be changed every 6-12 months for best results depending on your location and the Thermostat model. Some Thermostats use rechargeable AAA batteries which need to be recharged every month but offer better performance than typical alkaline AAA batteries; however, it’s recommended to always keep a minimum of 1 spare set of rechargeable AAA batteries handy.
Best Batteries For Thermostat.
As programmable thermostats require reliable batteries, you need to make sure that your thermostat is using the best batteries.
In general, rechargeable lithium-ion Thermostat batteries are the best choice for Thermostats as they last longer than standard AAA or AA Alkaline batteries and can be charged even while they are inside thermostats. Lithium-ion Thermostat batteries also work better during power outages as low temperatures won’t affect their performance.
If you need Thermostat that only uses replaceable alkaline AAA or AA batteries, it’s recommended to use Energizer Ultimate Lithium AAA Batteries as they offer 8 times more battery life than regular alkalines and will keep your Thermostat working during power outages where other types of batteries fail to function properly.
Eizer Ultimate Lithium AAA Batteries are also the Thermostat battery of choice for Thermostats with built-in rechargeable lithium-ion batteries.
Is it hard to replace thermostat batteries?
As a novice, replacing thermostat batteries isn’t too difficult if you follow the Thermostat manual instructions. You may also need to replace Thermostat batteries in cases where Thermostats are supplied without AA or AAA batteries out of the box, which is common for programmable Thermostats with built-in lithium-ion batteries.
Difficulty level: Easy to replace
Cost: $0 – $15
Note that battery replacement frequency depends on your location and the Thermostat model. It’s best to check your Thermostat for indicator lights that show low battery status and change batteries when needed for safety during power blackouts.”
How long do batteries last in a thermostat? – Thermostat batteries should be changed every 6-12 months depending on the Thermostat model and weather conditions.
Best Thermostat Batteries: Energizer Ultimate Lithium AAA Batteries are the best choice for Thermostats with built-in rechargeable lithium-ion batteries, while Eizier Ultimate Lithium AAA batteries are the Thermostat battery of choice for Thermostats that use external alkaline AAA or AA batteries only.