The latest advancements in the field of big battery phones - Energizer

The latest advancements in the field of big battery phones

Big battery phones


In today's fast-paced world, where we rely heavily on our smartphones for communication, entertainment, and productivity, one of the most frustrating experiences is running out of battery. The constant need to find a charging point or carry a power bank can be a hassle. However, there is hope on the horizon. Companies like Energizer are pushing the boundaries of battery technology, introducing phones with good battery life that can last for days or even a whole week on a single charge. In this article, we will explore the latest advancements in the field of big battery phones and delve into the features and specifications of these long-lasting mobile devices.

The Evolution of Battery Technology

Before we dive into the details of the phones with good battery life, let's take a moment to appreciate how far battery technology has come. From the early days of mobile phones, where batteries lasted just a few hours, to the current advancements that allow for days-long usage, the evolution has been remarkable.

In the past, smartphones were primarily focused on features such as camera quality, processing power, and display resolution. Battery life was often neglected, leaving users frustrated with the need for constant charging. However, with the increasing demands of modern smartphone usage, manufacturers have recognized the importance of a long-lasting battery as a key selling point.

Avenir Telecom's Energizer Hard Case P28K: A Battery Powerhouse

One of the pioneers in the field of big battery phones is Avenir Telecom, the company behind the Energizer brand. Their latest offering, the Energizer Hard Case P28K, takes battery capacity to new heights with its massive 28,000mAh battery. To put it into perspective, this battery capacity is more than double the average flagship smartphone battery capacity.

The Energizer Hard Case P28K is not just about raw battery capacity; it also offers durability and ruggedness. With an IP69 rating, it can withstand the harshest conditions, making it an ideal companion for outdoor enthusiasts or those who work in demanding environments. The device measures 27.8mm in thickness and weighs 570g, making it bulkier and heavier than most smartphones on the market. However, for those who prioritize battery life over sleek design, these trade-offs are worth considering.

Unparalleled Battery Life: A Week of Usage

The standout feature of the Energizer Hard Case P28K is its exceptional battery life. Avenir Telecom claims that the device can last for a whole week of regular usage on a single charge. This is a significant improvement compared to the average smartphone battery life, which usually lasts for a day or two.

To put this into perspective, the talk time on the Energizer Hard Case P28K is rated at an impressive 122 hours, which is equivalent to a little over five days of continuous talking. Even in standby mode, the device can last up to an astounding 2252 hours, or almost 94 days. This means that users can go for extended periods without worrying about finding a charging point.

Charging Speed: Fast and Efficient

Despite its massive battery capacity, the Energizer Hard Case P28K boasts fast charging capabilities. It can be fast charged at up to 33W, allowing users to fully charge the device in under an hour and a half using the included 36W charger. This is a significant advantage for those who are always on the go and don't have much time to spare for charging their devices.

Specifications: Balancing Battery and Performance

While the Energizer Hard Case P28K excels in the battery department, it's essential to consider other specifications as well. The device falls into the entry-level category when it comes to processing power and connectivity options. It doesn't support 5G and is equipped with a nondescript MediaTek MT6789 processor.

On the bright side, the device offers 8GB of RAM and 256GB of storage, providing ample space for storing apps, photos, and videos. It also features a trio of rear cameras, allowing users to capture memorable moments with decent image quality. The display is a 6.78-inch 1080p LCD, offering a vibrant and immersive visual experience.

Price and Availability

When the Energizer Hard Case P28K goes on sale in October of this year, Avenir Telecom intends to sell it for 249.99The device will be available globally, except for the US market. This competitive pricing makes it an attractive option for those who prioritize battery life and durability.


Future Trends in Battery Technology

The introduction of phones with good battery life, such as the Energizer Hard Case P28K, is just the beginning of a new era in mobile devices. As technology continues to advance, we can expect even more significant improvements in battery capacity and efficiency. 

Here are some future trends to keep an eye on:

  • Advancements in Lithium-Ion Batteries: Researchers are constantly exploring ways to enhance the performance and lifespan of lithium-ion batteries, which are the most common type of batteries used in smartphones. This includes improving the energy density, reducing charging time, and increasing overall durability.

  • Development of Solid-State Batteries: Solid-state batteries are seen as the next big breakthrough in battery technology. These batteries use solid electrolytes instead of liquid, offering higher energy density, faster charging, and improved safety. As the technology matures, we can expect to see it implemented in smartphones, providing even longer battery life.

  • Integration of Alternative Charging Technologies: Wireless charging has already become a standard feature in many smartphones. However, future devices may take it a step further by integrating technologies such as solar charging or kinetic charging, allowing users to harness energy from the environment around them.


Phones with good battery life, like the Energizer Hard Case P28K, are a game-changer for users who rely heavily on their smartphones. With its massive 28,000mAh battery, durable design, and exceptional battery life, it offers a solution to the frustrating problem of frequent charging. While sacrifices are made in terms of size and weight, the trade-off is well worth it for those who prioritize battery longevity.

As battery technology continues to evolve, we can expect to see even more significant advancements in the future. With improvements in lithium-ion batteries, the development of solid-state batteries, and the integration of alternative charging technologies, the days of constantly searching for a charging point may soon be behind us. The future of smartphones is bright, and long-lasting battery life is at the forefront of this revolution.

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