---
product_id: 722886570
title: "Duaermen Ultimate Lithium Battery"
brand: "energizer"
price: "316 Lei"
currency: RON
in_stock: true
reviews_count: 5
category: "Energizer"
url: https://www.desertcart.ro/products/722886570-duaermen-ultimate-lithium-battery
store_origin: RO
region: Romania
---

# Long-lasting recharge cycle 8 Amps power output 8800 mAh high capacity Duaermen Ultimate Lithium Battery

**Brand:** energizer
**Price:** 316 Lei
**Availability:** ✅ In Stock

## Summary

> 🔋 Stay charged, stay ahead — power that never quits!

## Quick Answers

- **What is this?** Duaermen Ultimate Lithium Battery by energizer
- **How much does it cost?** 316 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/722886570-duaermen-ultimate-lithium-battery)

## 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

- • **Rechargeable & Ready:** Eco-friendly and wallet-smart with multiple recharge cycles.
- • **Trusted by Thousands:** 4.7-star rating from 47,000+ users means you’re joining a community that demands quality.
- • **Power Through Your Day:** 8 Amps of reliable energy to keep your devices running without a hitch.
- • **Featherlight Efficiency:** At just 2.5 grams, experience powerhouse performance without the bulk.
- • **Massive 8800mAh Capacity:** Stay unplugged longer with industry-leading battery endurance.

## Overview

The Duaermen Ultimate Lithium Battery delivers a robust 8 Amp output and an impressive 8800mAh capacity in a lightweight 2.5-gram design. Rechargeable and highly rated by over 47,000 users, it’s engineered for long-lasting, reliable power—perfect for professionals who demand uninterrupted performance.

## Description

Duaermen

Review: Half of them hold no charge, and the other half charges really slowly
Review: Long lasting battery

## Features

- Duaermen

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00EAKP8S0 |
| Amperage | 8 Amps |
| Antenna Location | Watch |
| Battery Capacity | 8800 Milliampere Hour (mAh) |
| Battery Weight | 2.5 Grams |
| Battery capacity | 8800 Milliampere Hour (mAh) |
| Best Sellers Rank | 51,105 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 2,750 in Disposable Household Batteries |
| Brand | Energizer |
| Brand Name | Energizer |
| Customer Reviews | 4.7 out of 5 stars 47,075 Reviews |
| Global Trade Identification Number | 00039800062826 |
| Item Dimensions | 18.7 x 11.4 x 9.5 centimetres |
| Item Weight | 0.13 Grams |
| Manufacturer | Duaermen |
| Model Number | L91SBP-8 |
| Number of Batteries | 8 AA batteries required. (included) |
| Number of batteries | 8 AA batteries required. (included) |
| Recommended uses for product | Watch |
| Reusability | Rechargeable |
| UPC | 039800062826 |
| Unit Count | 1.0 Count |
| Unit count | 1.0 Count |
| Voltage | 1.5 Volts |

## Product Details

- **Battery capacity:** 8800 Milliampere Hour (mAh)
- **Brand:** Energizer
- **Number of batteries:** 8 AA batteries required. (included)
- **Recommended uses for product:** Watch
- **Unit count:** 1.0 count

## Images

![Duaermen Ultimate Lithium Battery - Image 1](https://m.media-amazon.com/images/I/71EZYJvULBL.jpg)
![Duaermen Ultimate Lithium Battery - Image 2](https://m.media-amazon.com/images/I/71myAPIdnzL.jpg)
![Duaermen Ultimate Lithium Battery - Image 3](https://m.media-amazon.com/images/I/61siClfQmdL.jpg)
![Duaermen Ultimate Lithium Battery - Image 4](https://m.media-amazon.com/images/I/71uESVb6itL.jpg)
![Duaermen Ultimate Lithium Battery - Image 5](https://m.media-amazon.com/images/I/61ePd5YuO7L.jpg)

## Questions & Answers

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

## Customer Reviews

### ⭐⭐ Half of them hold no charge, and the other half charges really slowly
*by G***P on 9 November 2024*



### ⭐⭐⭐⭐⭐ Long lasting battery
*by A***R on 25 May 2025*



### ⭐⭐⭐⭐⭐ Batería AA fiable y duradera
*by J***A on 19 September 2025*

Probablemente la batería AA más duradera y fiable en el mercado. Ninguna de las que he utilizado ha vertido ácido al exterior.

## 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

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-03-03*