---
product_id: 27498933
title: "Energizer Ultimate Lithium 9V Batteries (2 Pack), Lithium 9 Volt Batteries"
brand: "energizer"
price: "$79"
currency: NZD
in_stock: true
reviews_count: 13
category: "Energizer"
url: https://www.desertcart.nz/products/27498933-energizer-ultimate-lithium-9v-batteries-2-pack-lithium-9-volt
store_origin: NZ
region: New Zealand
---

# 20% longer runtime 10-year shelf life Works -40°F to 140°F Energizer Ultimate Lithium 9V Batteries (2 Pack), Lithium 9 Volt Batteries

**Brand:** energizer
**Price:** $79
**Availability:** ✅ In Stock

## Summary

> ⚡ Energize your essentials with unstoppable power and reliability!

## Quick Answers

- **What is this?** Energizer Ultimate Lithium 9V Batteries (2 Pack), Lithium 9 Volt Batteries by energizer
- **How much does it cost?** $79 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/27498933-energizer-ultimate-lithium-9v-batteries-2-pack-lithium-9-volt)

## Best For

- energizer enthusiasts

## Why This Product

- Trusted energizer brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ready When You Are:** Holds power for up to 10 years in storage—ideal for emergency backups and long-term peace of mind.
- • **Power that Outlasts:** Lasts up to 20% longer than standard alkaline batteries, keeping your devices energized when it counts.
- • **Extreme Temperature Ready:** Reliable performance from freezing -40°F to scorching 140°F—perfect for any environment or season.
- • **Leak-Resistant Durability:** Engineered with leak-resistant construction to protect your valuable devices from damage.
- • **Lightweight & Long-Lasting:** 25% lighter than alkaline 9V batteries, reducing bulk without sacrificing power or longevity.

## Overview

Energizer Ultimate Lithium 9V Batteries deliver up to 20% longer life than standard alkaline batteries, operate flawlessly in extreme temperatures (-40°F to 140°F), and feature leak-resistant design. Lightweight and boasting a 10-year shelf life, these batteries are perfect for toys, clocks, and critical devices needing consistent, long-lasting power.

## Description

Nothing outlasts Energizer Ultimate Lithium 9V Batteries. These Energizer batteries last up to 20 percent longer in toys versus Energizer MAX batteries, and feature leak resistant construction and performance in temperatures from -40 F to 140 F. Use these 9 volt lithium batteries for toys and games. Energizer 9 volt Ultimate Lithium batteries weigh 25 percent less than standard alkaline batteries. They hold power for up to 10 years in storage, perfect for backup 9 volt batteries. To ensure your devices operate at peak performance, use Energizer lithium 9 volt batteries for work, play and home.

Review: THE BEST WIRELESS TRANSMITTER BATTERIES MONEY CAN BUY - 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.
Review: Fantastic for solid voltage, please understand what "10 year SHELF LIFE" means. - 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.

## Features

- 2 pack of Energizer Ultimate Lithium 9V Batteries
- Lasts up to 20 percent longer in toys versus Energizer MAX batteries
- Performance in extreme temperatures from -40 F to 140 F ensures reliable use in all seasons
- Long lasting batteries have leak-resistant construction
- Lightweight 9 volt batteries last up to 10 years in storage
- Ideal battery for toys and clocks, and long lasting smoke detector battery

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B01684J7P0 |
| Batteries  | 2 Lithium Metal batteries required. (included) |
| Best Sellers Rank | #10,005 in Health & Household ( See Top 100 in Health & Household ) #15 in 9V Batteries #1,073 in Sales & Deals |
| Customer Reviews | 4.7 4.7 out of 5 stars (5,714) |
| Date First Available  | April 12, 2016 |
| Is Discontinued By Manufacturer  | No |
| Item model number  | 30039800911576 |
| Manufacturer  | Energizer Batteries |
| Product Dimensions  | 0.7 x 3.7 x 4.5 inches; 2.4 ounces |

## Product Details

- **Battery Capacity:** 750
- **Battery Cell Composition:** Lithium Metal
- **Brand:** Energizer
- **Number of Batteries:** 2 Lithium Metal batteries required. (included)
- **Recommended Uses For Product:** Camera

## Images

![Energizer Ultimate Lithium 9V Batteries (2 Pack), Lithium 9 Volt Batteries - Image 1](https://m.media-amazon.com/images/I/71iov2Yg4+L.jpg)

## Questions & Answers

**Q: what is the mah?**
A: According to a vendor, it is  750 mAh capacity; I use them for smoke alarms (hardwired installed) and haven't replaced one yet. Generally standard 9v batteries would die after a power outage, ive replaced them all with lithium no problems in since.

**Q: are these l522bp-2 the same as advance lithium l522 ?**
A: Nope, different.  "9V Ultimate lithium" are Energizer's current product.   Energizer '9V Advanced lithium' has been discontinued so I'd bet that those are old stock.  Be sure to check the expiration date.    BP-2 just indicates there are two batteries in each individual package.  No designation, A plain BP, or Bp-1 would indicate a single battery per package.  BP4 would be a 4 pack, etc.

**Q: Life span in smoke alarms?**
A: Lasted only 1 year 5 months in my smoke detector.

**Q: Is there any chance of these batteries used in a smoke detector exploding and causing a fire?**
A: Virtually none.  This type of battery constuction is by far the most stable of all common types.  These are much safer and more stable than NiMH such as rechargeables or "standard" batteries which are generally Alkaline.  I use these in any sensitive devices or devices not used often but important.  As such I use these in my own smoke detectors and have never had any issue. For what it is worth I've been a FireFighter for 25+ years, so yes they are safe.  The one thing to be aware of is that if your smoke detector is hard wired and requires a rechargeable battery as a backup power source then do not use these.  These are not rechargeable batteries.

## Customer Reviews

### ⭐⭐⭐⭐⭐ THE BEST WIRELESS TRANSMITTER BATTERIES MONEY CAN BUY
*by S***A on January 18, 2026*

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.

### ⭐⭐⭐⭐⭐ Fantastic for solid voltage, please understand what "10 year SHELF LIFE" means.
*by A***T on August 15, 2020*

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.

### ⭐⭐⭐⭐⭐ For smoke detectors.
*by T***N on November 7, 2025*

Works as advertised and hopefully will last ten years.

## Frequently Bought Together

- Energizer Ultimate Lithium 9V Batteries (2 Pack), Lithium 9 Volt Batteries
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- Energizer AA Batteries, Ultimate Lithium Double A Battery, 8 Count

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-21*