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Energizer Ultimate Lithium AA Batteries, World's Longest Lasting Battery for High-Tech Devices, 8 count

from Energizer
4.6 out of 5 stars 2,107 customer reviews
| 51 answered questions
About the Product
  • Lithium Battery, AA, 8/PK
Special Shipping Information: Due to federal and international regulations, this product can only be shipped within the continental United States.


Frequently Bought Together

  • Energizer Ultimate Lithium AA Batteries, World's Longest Lasting Battery for High-Tech Devices, 8 count
  • +
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Total price: $80.35
Buy the selected items together

Product Description

Size: AA | Unit Count: 8

Energizer Ultimate Lithium batteries raise the bar on long-lasting power for today’s modern electronics. Earning the title “the world’s longest-lasting AA batteries in high-tech devices”, Ultimate Lithium helps ensure uninterrupted gaming, music, home safety systems and critical work tasks. With its ability to perform in extreme temperatures and last in storage for up to 20 years, Ultimate Lithium is the clear choice to dependably power the essential devices in your life.

Product Details

Size: AA | Unit Count: 8
  • Product Dimensions: 1.2 x 3.8 x 4.5 inches ; 4 ounces
  • Shipping Weight: 4 ounces (View shipping rates and policies)
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • Origin: USA
  • ASIN: B0000DC4EL
  • UPC: 872182722854 039800062888 641438109776 001910053278 640206539487 021111145336
  • California residents: Click here for Proposition 65 warning.
  • Item model number: L91BP-8
  • Batteries 8 Lithium Metal batteries required. (included)
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (2,107 customer reviews)
  • Amazon Best Sellers Rank: #416 in Health & Personal Care (See Top 100 in Health & Personal Care)

From the Manufacturer

energizer bunny choose the right energizer battery

Feeling a little lost? Compare batteries to make the best choice with the battery comparison chart below. Want to compare alkaline batteries? Need a particular battery size or certain battery life? Use this easy guide to our most popular, long-lasting batteries.

Energizer MAX Energizer EcoAdvanced Energizer Ultimate Lithium Energizer Recharge Power Plus Energizer Recharge Universal
Sizes AA, AAA, C, D, 9V AA, AAA AA, AAA, 9V AA, AAA AA, AAA, C, D, 9V
Composition Alkaline Alkaline Lithium NiMH NiMH
Shelf Life up to 10 years; up to 5 years 9V up to 12 years up to 20 years AA, AAA; up to 10 years 9V Hold charge up to 12 months when not in use; 5-year battery life Hold charge up to 12 months when not in use; 5-year battery life
Rechargeable
# of Recharges up to 700 up to 1000 for AA, AAA
No-Leak Guarantee Yes - AA, AAA Yes - AA, AAA Yes - AA, AAA Yes - AA, AAA Yes - AA, AAA
Made with Recycled Batteries AA - 4% recycled batteries; AAA - 3.8% recycled batteries
Key Benefit Long-lasting power & leakage protection for your devices World's 1st AA battery made with 4% recycled batteries and our longest-lasting alkaline battery World's longest lasting in high-tech devices Up to 350 photos and up to 7 hours toy activity per charge with AA Up to 230 photos and up to 5 hours handheld gaming per charge with AA
Best Uses Everyday low- to mid-drain electronics Everyday and high-drain electronics Everyday and high-tech electronics; suitable for use in extreme temperatures Frequently used devices that drain batteries fast Frequently used devices that drain batteries fast

Important Information

Legal Disclaimer
Actual product packaging and materials may contain more and different information than what is shown on our website. We recommend that you do not rely solely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. Please see our full disclaimer below.

Bulb Voltage
1.5 Volts

Customer Reviews

Top Customer Reviews

Size: AAUnit Count: 4
The Energizer L91 Lithium AA cell is a fantastic power source. For high-drain applications, it offers great advantages over ordinary alkaline cell and rechargeable NiMH cell. However, it is also very expensive as a disposable battery. So it is important to recognize the strength of L91, and use it only in applications that give you the best results. Otherwise you'll be wasting your money.

According to data sheet published by Energizer, the capacity of the Lithium AA cell (L91) is 3000mAh. This number remains nearly constant with load current. In comparison, the ordinary Alkaline battery (such as the Energizer E91 AA) is rated as 2800mAh, but only at a very light load of 25mA. At a heavy load of 1000mA (typical for a digital camera or flash unit), its capacity drops to below 1000mAh. This number gets even worse at low temperature. At zero degree C and 1000mA load, the L91 can provide about seven times more energy compared to the E91. This is where the marketing claim of "Last up to 7 times longer" comes from.

When used in a digital camera at room temperature of 25 degree C, the L91 is more likely to last 3-4 times longer than alkaline. This is enough to justify its price, which is also around 3-4 times higher than alkaline. However, in low-drain applications (such as smoke detector, wireless mouse or remote control) alkaline cells will last just as long at a fraction of the cost.

The L91 also contains much higher energy when compared to an ordinary rechargeable NiMH cell such as the Energizer NH15-2500.
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Size: AAUnit Count: 8
[Updated on June 8, 2011]
Note: Amazon has moved two of my previous reviews (one for Energizer Lithium AA 4-pack, one for 8-pack) under one page. Therefore I have to update my review to add some new information - or else I look like a fool who says the same thing twice.

=== New information follows ===

There seems to be some confusion about those Energizer Lithium AA batteries. Several people have bought those batteries under the assumption that they are rechargeable, only to be disappointed later.

Despite the name 'Lithium', those Energizer Lithium AA batteries are very different from the commonly known 'Lithium-ion' rechargeable batteries. Namely:

- They are single-use batteries (NOT rechargeable like Li-ion)
- The terminal voltage for each cell is around 1.65V (compared to around 3.7V for each Li-ion rechargeable cell)

The two types of batteries are not compatible. If your camera accepts AA cells, then you should use those Lithium AA cells and not Li-ion rechargeable battery. Alternatively, you may explore other rechargeable battery options, namely:

1. Low-self-discharge NiMH AA cells, such as Sanyo Eneloop or Sony Cycle Pre-Charged. Those have a operating voltage of 1.25V per cell, so some cameras (especially those that use only two cells) may not operate correctly on those.

2. Nickel-Zinc rechargeable such as PowerGenix AA.
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15 Comments 287 of 303 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Size: AAAUnit Count: 4
The Energizer L92 Lithium AAA cell is a fantastic power source. For high-drain applications, it offers great advantages over ordinary alkaline cell and rechargeable NiMH cell. However, it is also very expensive as a disposable battery. So it is important to recognize the strength of L92, and use it only in applications that give you the best results. Otherwise you'll be wasting your money.

According to data sheet published by Energizer, the capacity of this Lithium AAA cell (L92) is 1200mAh. This number remains nearly constant with load current. In comparison, the ordinary Alkaline battery (such as the Energizer E92) is also rated as 1200mAh, but only at a very light load of 25mA. At a heavy load of 500mA (typical for a P&S digital camera), its capacity is reduced to about one-third. The difference gets even greater at low temperature. At zero degree C and 500mA load, the L92 can provide about seven times more energy compared to the E92. This is where the marketing claim of "Last up to 7 times longer" comes from.

When used in a digital camera at room temperature of 25 degree C, the L92 is more likely to last 3-4 times longer than alkaline. This is enough to justify its price, which is also around 3-4 times higher than alkaline. However, in low-drain applications (such as smoke detector, wireless mouse or remote control) alkaline cells will last just as long at a fraction of the cost.

The L92 also contains much higher energy when compared to rechargeable NiMH cell such as the Sanyo Eneloop AAA.
Read more ›
11 Comments 142 of 156 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Energizer Ultimate Lithium AA Batteries, World's Longest Lasting Battery for High-Tech Devices, 8 count
This item: Energizer Ultimate Lithium AA Batteries, World's Longest Lasting Battery for High-Tech Devices, 8 count
Price: $14.20
Ships from and sold by Amazon.com
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