Ultimate Lithium 9V Batteries 2 Pack, Long-Lasting for Smoke Detectors & Alarm Systems

ALWAYS PERFECT EVERY TIME! Nothing beats these batteries. I use them in a Sure wireless mic pack and these batteries consistently outperform every other battery on the market! These last weeks without needing to be replaced! HELPFUL WARNING: DO NOT DO NOT DO NOT use these batteries for any types of alarms (smoke, CO, etc) or electronic door locks. Stick to Alkaline batteries for those devices.

Made a huge difference in my monoxide monitoring

Love energizer lithium. Just a great battery. Enough said.

Bought it for my electric gun safe. Didn’t want alkaline with risk of leakage. Works great.

Long lasting quality batteries. Easy to use and remove. Price of Lithium batteries needs to come down and recycling needs to improve. May offer ax recycling deposit for return of used lithiums applicable to new purchase???

So I see several reviews complaining about these not lasting 10 years, these have a 10 year SHELF LIFE not a 10 year USE LIFE- those are 2 entirely different things. 10 year shelf life refers to how long these will be viable for sitting on a shelf/stored not plugged into anything. As far as actually putting these into something you can expect use-life to be about the same as a typical 9V or a little longer. I bought these to power the Fishman Fluence active pickups in my guitar because these types of batteries provide very consistent power - which is where these excel compared to your average alkaline 9V which can waver a little in power getting worse over time. The only issue with these is they will suddenly die out on you once they are done but they will give you the same consistent power until its last breathe. Who these are for: -People who have devices/uses that require very consistent power. -People using devices that are subjected to more extreme temperatures. -Expensive devices that could be destroyed by a small battery leak. -People who like to store up on back-up batteries for a long time for later use. Who these are NOT for: -People who think 10 year shelf-life is the same as 10 year use-life. -People looking for rechargeable batteries (these are NOT the same as rechargable lithium batteries) *NOTE: These are very close to the size of your average alkaline battery but ever so slightly bigger since the edges are not rounded so if you want to put these into something where the battery space is a very tight fit it might not fit.

Most expensive batteries ever. Are they worth it? Time will tell. I bought them because I got a digital safe cheap and I wanted to splurge on really good batteries so I wouldn't have combination problems. Otherwise I'd never spend the money.

Works as advertised and hopefully will last ten years.

Absolutely the best battery for guitar pickup Lasts seemingly forever !! Ok not forever but at least 1 year on my LRBaggs pickup anthem. About double the time compared to alkaline 9v for me

A+

If you need batteries, personally, I feel these are the best. They last a very long time. Good quality cost a little more but you get what you pay for.

Bought for backup for two wired in smoke alarms with ten year expiry matching the shelf life of the batteries. I’ll check back in ten years and let you know if they did the job!

Yes, good bastards last long.time