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Duaermen Ultimate Lithium Battery

Q: What is the capacity of the 1.5v batteries in mAh?

Thank you for reaching out to Energizer.The capacity of the 1.5v is 3000 mAh. For any further information you can reach out to us at energizer@custhelp.com or can call us at 800-383-7323.

Q: Anyone know if there is a difference between the "advanced" lithium and the "ultimate" lithium?? Other than price.

I thought it would be marketing as well. So I looked in a leading consumer review Magazine and there is apparently a difference. They rated the "ultimate" A few points higher than the "advanced" and for the two tests that they use, one a flashlight test and the other a toy test, the "ultimate" received "excellent" on both tests, while the "advanced" Received "excellent" on the flashlight test and a "good" on the toy test. So I assume the lithium ultimate version lasted longer on the run down test for the toy, which is going to draw energy more inconsistently than a flashlight. If I find a product is burning through batteries faster than expected, I will usually try lithiums. More often than not, the improvement in run time is substantial

Q: Are these “energizer e91” batteries? my co detector requires that type (won’t work with generic aas). where on packages does it indicate e91?

E91 refers to Eveready Alkaline batteries¹ (open circuit about 1.5 VDC). L91 refers to Eveready Lithium batteries² (open circuit about 1.8 VDC). The physical casing is the same size. The CO detector may present such a low battery load that it does not like the slightly higher voltage that the L91 battery exhibits when not under a typical load. Contact your CO detector manufacturer and get their opinion on which battery to use (Alkaline or Lithium). I've used both in a number of applications and they've both worked well (although the Alkalines leak while the Lithium never have [for me at least]). _________________________________ ¹ https://www.amazon.com/s?k=E91+battery ² https://www.amazon.com/s?k=L91+battery

Q: What is the voltage of these batteries? they don't work in my handheld mic. non-lithium aa energizer batteries do work in the mic.

The open circuit voltage (i.e., just the battery alone) of Eveready's Ultimate Lithium batteries is roughly 1.8 VDC. Under a reasonable load this drops to roughly 1.5 VDC (as Reilly pointed out). This is normal. It is possible in your application -- a very low load on the batteries -- it is possible that the higher voltage is affecting your electrical circuit somehow. I've never run into this but it is possible. Physically they use the same physical case (50mm long, 14mm diameter). But I have seen some designs where the designer got cute and tried to mask off the + battery terminal using barriers to protect from reverse polarity. The result is sometimes the + battery terminal doesn't make contact with the + device terminal. If you're really intent on using the Lithium batteries, I'd recommend checking out those two scenarios. Good luck. And feel free to come back and leave "an answer" if you come up with a solution to use the Lithiums.

Product ID: 722886570

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Details

Number of batteries
8 AA batteries
Brand
Energizer
Battery capacity
8800 Hour
Recommended uses for product
Watch
Unit count
1.0 count

⚡High energy density

🔋Long-lasting power

🪶Lightweight design

Frequently Bought Together

Energizer AA Batteries, Ultimate Lithium Double A Battery, 8 Count

Energizer Ultimate Lithium AAA Batteries (8 Pack), Lithium Triple A Batteries

Energizer Ultimate Lithium AA Batteries Pack, 1.5V AA Batteries, 24 Count

Description

🔋 Power your hustle with Duaermen’s ultimate lithium energy!

COMPACT READY - Sleek dimensions fit seamlessly into your devices, perfect for on-the-go professionals.
FEATHERLIGHT ADVANTAGE - At just 127g, this battery delivers robust power without the bulk.
ENDURANCE THAT OUTLASTS - Experience extended battery life that keeps your devices powered when it matters most.
POWER PACKED PERFORMANCE - High energy density ensures your gadgets run efficiently without compromise.
TRUSTED BRAND RELIABILITY - From Energizer, a name synonymous with quality and consistent performance.

The Duaermen Ultimate Lithium Battery by Energizer offers a lightweight, compact power solution with high energy density and long-lasting performance, ideal for professionals seeking reliable and efficient battery life in their everyday electronics.

Specifications

Package Dimensions L x W x H	11.6 x 10.4 x 1.9 centimetres
Package Weight	0.13 Kilograms
Product Dimensions L x W x H	18.7 x 11.4 x 9.5 centimetres
Item Weight	127 g
Brand	Energizer
Part number	L91SBP-8
Guaranteed software updates until	unknown

Have a Question? See What Others Asked

What is the capacity of the 1.5v batteries in mAh?

Anyone know if there is a difference between the "advanced" lithium and the "ultimate" lithium?? Other than price.

Are these “energizer e91” batteries? my co detector requires that type (won’t work with generic aas). where on packages does it indicate e91?

What is the voltage of these batteries? they don't work in my handheld mic. non-lithium aa energizer batteries do work in the mic.

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