Energizer Ultimate Lithium 9V Batteries
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The Energizer Ultimate Lithium 9V batteries are highly regarded for their exceptional longevity and reliability, making them ideal for critical devices like smoke detectors and remote controls. Guests appreciate their lightweight design and resistance to extreme temperatures, ensuring consistent performance. With a 10-year shelf life and leak-proof construction, these batteries provide peace of mind for various household needs. Many guests recommend them for their outstanding value and durability, making them a trusted choice for powering essential electronics.
Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
4.7 out of 5 stars with 227 reviews
53% would recommend
15 recommendations
5 out of 5 stars
4 September, 2026
originally posted on influenster.com

Long life
Great battery, the battery life has been long and it has been reliable. Well packaged with clear marketing. Easy to install with clear instructions.
1 out of 5 stars
Thumbs down graphic, would not recommend
4 September, 2026Verified purchase
DON'T FIT TOO SQUARE
Too large for the newest smoke detectors. Tried to start the process for returning on-line but Target’s crazy app won't allow even though I purchased online for curbside pickup. One would think curbside return would be available for this return because these batteries are very expensive!
1 reply from Energizer Team team - 8 days ago
Thank you for submitting your Review.B! We apologize for the inconvenience caused. Please reach out to us on 1-800-383-7323 or email us on customersupport@energizer.com to assist you better. Energizer Consumer Services
5 out of 5 stars
4 September, 2026
originally posted on influenster.com

Standard 9V
What’s there to say - this is a standard solid 9V battery. I’ve got it in my smoke alarms and it’s been going strong for a long time. No complaints it has a lot of charge
5 out of 5 stars
2 September, 2026
originally posted on influenster.com

Reliable and long lasting
: 1 These Energizer 9V batteries are always reliable and last a long time. I prefer them for all my devices that need this battery type. High quality and worth the purchase. Highly recommend.
5 out of 5 stars
2 September, 2026
originally posted on influenster.com

Reliable and long lasting.
I’m really happy with the energizer 9v lithium battery. It works great seems to last much longer than standard 9v batteries. I like that it has a long shelf life and will be reliable when I need it.
5 out of 5 stars
26 August, 2026
originally posted on influenster.com

Longest lasting.
This is the best battery I have used for my fire alarms they have lasted longer than any other brand I have used, about a fourth of my hand, very light, no discharge.
5 out of 5 stars
28 July, 2026
originally posted on influenster.com

if you are not looking to be constantly changing batteries this is a good option
The Energizer Ultimate Lithium 9V Batteries are of very good quality, since they are of long life and performance. They are light and resistant to extreme temperatures. These batteries stand out for their long service life and leakage resistance, if you are not looking to be constantly changing batteries this is a good option
5 out of 5 stars
Thumbs up graphic, would recommend
22 July, 2026
Goid product bad service.
My complaint is for Target. You only had half my order yet charged me for the whole order. This is unacceptable. I expect a refund asap
4 out of 5 stars
14 July, 2026
originally posted on influenster.com

They work as intended
The output is fine, the size is the same as others, durability is hard as a rock. If you have ever shot one of these with a 0.22 bullet they explode and makes a fun boom.
5 out of 5 stars
9 July, 2026
originally posted on influenster.com

Works great
Purchased for my wife’s grandmother to use in her alarm clock. Even though it’s plugged in the battery will help when the power goes out so it’s long endurance will be great.
5 out of 5 stars
9 July, 2026
originally posted on influenster.com

Really good
These Energizer batteries are really good because they have a long lifespan I ve been using them in my device for several months and they work like new I highly recommended them
5 out of 5 stars
12 June, 2026
originally posted on influenster.com

Build to last
These batteries are top notch. The lithium line is the best. They always last long. They’re easy to install. I don’t notice a difference in temperature. There just built to last.
5 out of 5 stars
12 June, 2026
originally posted on influenster.com

Energized again
Once again Energizer is a battery name you can trust. I’ve used their Ultimate lithium line in several different sizes for many different devices. There are more and more devices that require lithium batteries. This is my go to brand. I found the 9v to be no different. It doesn’t let me down. It lasts a long time and the price isn’t bad either. The package is easy to open as well.
5 out of 5 stars
4 June, 2026
originally posted on influenster.com

Trustworthy batteries used in all of my smoke detectors!!
Trustworthy batteries used in all of my smoke detectors!! Good size lightweight no leakage or drainage! My go to for many of my battery operated devices!! Highly recommended!!
5 out of 5 stars
23 May, 2026
originally posted on influenster.com

Long-lasting and reliable batteries that deliver strong performance for everyday devices.
This battery lasts a long time and works really well in devices that need strong power. I like that it feels reliable and doesn’t overheat easily. Great for smoke detectors, electronics, and other household devices. The packaging is simple and easy to open, and I haven’t had any leakage problems so far.
5 out of 5 stars
21 May, 2026
originally posted on influenster.com

Long Lasting
These 9V batteries deliver, strong consistent power with excellent performance and a long lasting charge. They store well and are easy to dispose of through battery recycling programs.
5 out of 5 stars
20 May, 2026
originally posted on influenster.com

Excellent and reliable battery!!
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.
5 out of 5 stars
29 April, 2026
originally posted on influenster.com

Long lasting, top of the line
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
5 out of 5 stars
27 April, 2026
originally posted on influenster.com

Long lasting battery...
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.
4 out of 5 stars
17 April, 2026
originally posted on influenster.com

Last long
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