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Ultimate Lithium 9-Volt Batteries

Ratings & Reviews for Energizer Ultimate Lithium 9-Volt Batteries

4.7
317
Review
 4.7 out of 5
317 Reviews


96% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The batteries are praised for their exceptional performance, long-lasting power, and suitability for use in smoke detectors, where their extended lifespan of up to 10 years is highly valued. Reviewers report the batteries last significantly longer than standard alkaline 9V batteries, reducing the need for frequent replacements. The lithium composition provides superior energy density and shelf life. Customers appreciate the reliable and dependable power the batteries deliver, though some note the square shape may not fit all devices as well as the more common rounded 9V batteries. Overall, the batteries are regarded as a high-quality, long-lasting product that provides excellent value, especially for critical applications like smoke detectors.

Customer review summary generated by AI, including incentivized reviews.
317 Customer Reviews

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

April 29, 2026

From 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.

April 27, 2026

From 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

April 17, 2026

From influenster.com

So many uses!

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.

April 13, 2026

From influenster.com

Worked as intended

Would Recommend

Worked as intended

April 5, 2026
From Ultimate Lithium 9-Volt Batteries 2 -Pack Verified Purchaser
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Works great

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

April 3, 2026

From influenster.com

Battery life

Long life and excellent reputation.

April 2, 2026
Verified Purchaser
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Our house Smoke Alarms ONLY battery

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.

March 23, 2026

From influenster.com

Great for smoke detectors

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.

March 16, 2026

From influenster.com

They last!

They last so long! I can trust in energizer for all of my needs may it be my smoke detectors to my child’s toys! The don’t drain as quick as other brands.

March 15, 2026

From influenster.com

Great

Great battery. Consistency is good and no leakage. Great to have for the little race cars your kids like to play with. Absolutely love this brand!

March 5, 2026

From influenster.com

Good

Energizer 9v batteries worked great in mi kids toy long lasting reliable power. Held up well no leaks or issues.Good value for the price would buy again

February 27, 2026

From influenster.com

Long lasting

The energizer lithium 9v batteries have been a game changer for my homes outdoor cameras. Before switching to lithium batteries i was having to change the batteries so frequent. Now I only have to worry about them once a year.

February 26, 2026

From influenster.com

Extremely long-lasting 9V batteries ideal for safe

Energizer Ultimate Lithium 9V batteries deliver outstanding performance and reliability. I use them in smoke detectors and other critical devices, and they last significantly longer than regular alkaline batteries. They provide consistent power, even in extreme temperatures, and give great peace of mind. A bit more expensive, but absolutely worth it for safety and long-term use.

January 25, 2026

From influenster.com

Great value

These batteries last much longer than others I’ve tried. I use them in my remote controls and they still work perfectly after weeks. Great value for the price!

January 10, 2026

From influenster.com