POWEROWL AAA Batteries, 1.5V Lithium, Triple A Battery - Pack of 8 (Not Rechargeable)

Purchase these a while ago and so far they are working very well in what I am using them in . Only used half of them so far so still have some spare batteries to use when the ones in use run out.

Excellent life and cheapest on the market

The idea of having batteries for a remote that last 10 years is amazing. The weight of the batteries is incredible. It is almost as if they are hollow. Simply brilliant - but expensive. I just had to try them out when I found them. Glad that I did.

Work well in headlamp and torch but not so good for outside alarm as the batteries run down very quick in cold temps

This is absolutely fantastic I've had no issues with it whatsoever

Used for outside data gathering technology; exceptional longevity and efficiency

I was never a huge fan of disposable batteries since they offer terrible value compared to rechargeable ones. Circumstances changed though when one of my devices (an external Netatmo module for monitoring outside temperature and humidity), started eating batteries like there was no tomorrow. Being fed up on recharging the batteries every month for that device I decided to test the POWEROWL lithium ones compared to the previously used Eneloop pro in the hope of less frequent battery replacements.Well, the results are in and they are not any good. As you can see in the provided screenshot from my home assistant instance, the module managed to last 30 days with the POWEROWL lithium batteries (right side) compared to the 24 the Eneloop PRO did (left side). You may say well that is 20% more than the rechargeable ones which is significant but I was getting the same performance if not better with cheaper alcalines. Even worse the Eneloop ones are a few years old by now already having gone through multiple charging cycles that have potentially reduced the capacity they can hold.Getting a bit deeper into the results the big fluctuations in voltage (battery percentage) tell me that either they are really sensitive to the weather conditions or sth is wrong with their chemistry. The sudden drop in voltage near the end of their lifetime is I guess kind of expected for lithium batteries which I guess are better fit for devices that require consistent high nominal voltage, sth that neither alkaline nor rechargeable can provide.So if you are looking for value stay away. At the time of writing 8 POWEROWL lithium batteries cost 10 pounds compared to around 15 pounds for 4 Eneloop pro that will give you 500 more cycles just with a reduced 80% capacity compared to the lithium ones.

. . . Only last about a third of the life of Energizer Lithiums. (Used in the same appliances).