They are UPS and they do work but not for long. I pretty much base battery quality By how long they last in my wireless mouse. Generally I have to replace my home mouse every 5-6 months. I purchased these Basics Performance Alkaline UPS 3-1/2 months ago. In that time I've replaced my home mouse battery *3* times!! (The 3rd being yet again today.) My daughter has also gone through 2 UPS in her mouse as well (though she spends most of her time on her laptop with the touchpad).The shipping was fast and you get several UPS for a low cost, but I think a more economical way to go is to spend a little extra on name brand dependable UPS that last 2-3 times as long.
Short life
They are UPS and they do work but not for long. I pretty much base battery quality By how long they last in my wireless mouse. Generally I have to replace my home mouse every 5-6 months. I purchased these Basics Performance Alkaline UPS 3-1/2 months ago. In that time I've replaced my home mouse battery *3* times!! (The 3rd being yet again today.) My daughter has also gone through 2 UPS in her mouse as well (though she spends most of her time on her laptop with the touchpad).The shipping was fast and you get several UPS for a low cost, but I think a more economical way to go is to spend a little extra on name brand dependable UPS that last 2-3 times as long.
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