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Energizer L91BP-8 Lithium AA Photo Battery (8-Pack) by Technuity
List Price: $25.61Our Price: $10.07You Save: $15.54 (61%)Availability: Usually ships in 1-2 business days Category: CE See more product details
Digital Photo Product DetailsManufacturer: Technuity Published: 2010-09-15 Release Date: 2012-01-31 Model: L91BP-8 Color: BLUE Product features: - Last up to 8x longer in digital cameras (versus Energizer MAX. results vary by camera.)
- Weigh 1/3 less than standard alkaline batteries
- Perform in extreme temperatures from -40degree F to 140degree F
- 17 year storage life
- This item is not for sale in Catalina Island
Digital Cameras Photo Reviews of Energizer L91BP-8 Lithium AA Photo Battery (8-Pack)Customer Review: Match those batteries with the correct application for best results Summary: 5 Stars
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. This is partially due to its higher terminal voltage of 1.5V, which is 20% higher than that for NiMH.
Energy stored in NH15-2500 : 2.5Ah * 1.25V = 3.125Wh,
Energy stored in L91 : 3Ah * 1.5V = 4.5Wh (44% higher).
Higher terminal voltage for L91 is especially advantageous in digital camera applications, because your camera flash will recharge up to 20% faster. An added benefit is that the L91 weighs only 14.5 grams (0.5 oz) each, compared to 30 grams (1 oz) for NiMH. So your camera becomes much lighter.
The NH15-2500, like all ordinary NiMH cells, suffers from rapid self-discharge problem. If you charge up a set of those cells and leave them in your camera for a few weeks, you're likely to be greeted by 'Low Battery' sign when you try to take a photo. The new generation of 'ready-to-use' NiMH cells such as SANYO eneloop and Rayovac Hybrid solved this problem by having very low self discharge rate. But they have lower capacity of only 2000-2100mAh.
Bottom line: If you need AA batteries for a long hiking trip, then L91 is obviously your best choice. For most other situations, I recommend using low self-discharge NiMH cells for lower operating cost.
Description of Energizer L91BP-8 Lithium AA Photo Battery (8-Pack)Energizer Ultimate Lithium batteries deliver long-lasting power to keep up with today's high-tech, power hungry devices like digital cameras, photo flash units and handheld GPS devices. Energizer Ultimate Lithium BatteriesEnergizer Ultimate Lithium batteries offer the longest lasting power for your high-tech devices. This dependable, light-weight battery offers the latest lithium battery technology that's proven to be the world's longest lasting AA and AAA batteries in high-tech devices. Made from the lightest metal known, Energizer Ultimate Lithium differs from traditional alkaline batteries in its construction and chemistry. It is this unique composition that is able to meet the needs of today's high-draining devices and provide the longest lasting power available. Energizer Ultimate Lithium batteries also produce up to 8X less waste in digital cameras than traditional alkaline batteries. Energizer Ultimate Lithium is the product that powers the devices that make your life easier and more fun. Digital cameras to capture memories, a handheld GPS device to find your way, and everything in between.  |  | Performs in extreme temperatures from -40° F to 140° F: Great for outdoor use |
|  | Leak resistant construction: Assurance for expensive electronics |
|  | Weigh 1/3 less than ordinary alkaline AA and AAA batteries: Ideal for traveling and portability |
|  | Up to 15 years shelf life: AA and AAA cells |
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| Available in multiple cell sizes to power all your high-draining devices. | 
Energizer Ultimate Lithium AA- Lasts up to 8X longer* in digital cameras
- Lasts up to 7 hours longer** in handheld GPS devices
- Lasts up to 3.5 hours longer** in CD Players
- Lasts up to 2X longer*** in photo flashes
*vs. Energizer MAX. Results vary by camera. **vs. Energizer MAX. AA only. Results vary by device. ***vs. leading ordinary alkaline. AA only. Results vary by align="left">
Energizer Ultimate Lithium AAA- Lasts up to 8X longer* in digital cameras
- Lasts up to 6 hours longer** in handheld GPS devices
- Lasts up to 5.5 hours longer*** in MP3 Players
*vs. Energizer MAX. Results vary by camera. **vs Energizer MAX. AAA only. Results vary by device. ***vs. Energizer MAX based on proposed industry standard tests. AAA colspan="2">Reusable Power | High Tech | Everyday Life |  | Energizer Advanced Lithium:- Lasts 30% longer* in handheld games, AA only
- Lasts up to 4X longer* in digital cameras
- Up to 10 years shelf life
*vs. Energizer Max. Results vary by device | 
Ideal for use in digital cameras, handheld GPS devices, photo flashes and video-game accessories | Available Cell Sizes: |
|  | Energizer Max:- Makers of the World's 1st* Zero Mercury alkaline battery
- Up to 7 years of shelf life for AA, AAA, C, and D and up to 5 years of shelf life for 9V
*Commercially available since 1991 | 
Ideal for the devices you use every day--from toys to video game controllers to flashlights | Available Cell Sizes: |
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(C) 2011 Energizer. Energizer, Energizer Bunny design, card and label graphics and shape, and other marks are trademarks of Energizer.
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