Customer reviews from Energizer Brands
Energizer - Ultimate Lithium 9-Volt 9 V Battery 2 pk
Average customer rating
4.9
(173 Reviews)
Rating breakdown 173 reviews
5 Stars
154
4 Stars
18
3 Stars
1
2 Stars
0
1 Star
0
99%of customers recommend this product.
(
137 out of
138)
Customer Reviews for Energizer - Ultimate Lithium 9-Volt 9 V Battery 2 pk
Customer Rating
5
Excellent and reliable battery!!
on May 20, 2026
Posted by: AngelaP
This is my go to battery for my smoke alarms in my home. I have 4 alarms in my home and even if I miss my mid-year change out they are still charged and protecting my home.
Written by a customer while visiting influenster.com
Customer Rating
5
Long lasting, top of the line
on April 29, 2026
Posted by: TrentR
Energizer is great and their ultimate lithium batteries are top notch! They last so long I forget when I changes my fire alarm batteries last! ;p
Written by a customer while visiting influenster.com
Customer Rating
5
Long lasting battery...
on April 27, 2026
Posted by: JohnP
These Energizer batteries really do keep on going and going. I have these in many different electronics around my home and I really don't need to replace them very often, they don't seem to drain very quickly.
Written by a customer while visiting influenster.com
Customer Rating
4
Last long
on April 16, 2026
Posted by: RobertF
The batterys lasted a long time in the controller for my drone and remote control cars i would definitely be buying more batterys for the rest of my toys
Written by a customer while visiting influenster.com
Customer Rating
5
So many uses!
on April 13, 2026
Posted by: michelleR
I trust Energizer's Ultimate Lithium 9V Batteries and use them in our smoke detectors, son's toys and appliances around our home. They are reliable, affordable, and last a long time.
Written by a customer while visiting influenster.com
Customer Rating
5
Works great
on April 3, 2026
Posted by: brendab150
I have used the energizer lithium 9 V batteries for years in my radio, and it works for a very long time. It’s very lightweight and never gets overheated like some batteries do
Written by a customer while visiting influenster.com
Customer Rating
5
Our house Smoke Alarms ONLY battery
on March 23, 2026
Posted by: VictoriaC
This is the ONLY batteries we use in our household Smoke Detectors
Guess you’d say that We trust our life with it ….. our lives are in the bunnies hands. Energizes you can trust your life with them.
Guess you’d say that We trust our life with it ….. our lives are in the bunnies hands. Energizes you can trust your life with them.
Written by a customer while visiting influenster.com
Customer Rating
5
Great for smoke detectors
on March 16, 2026
Posted by: MelissaP
I have these in all of my smoke detectors, and they are going strong! They have great power. The size and weight are similar to other 9V batteries. The packaging was easy for me to open.
Written by a customer while visiting influenster.com