Long-Lasting Battery Lithium vs AGM, in brief,

Exploring the Types and Comparing Lithium and AGM

C. L. Beard
Energy Wrinkles
3 min readApr 1, 2024

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Photo by Markus Spiske on Unsplash

Where we rely heavily on portable electronic devices, and having a long-lasting battery is of utmost importance. Whether it’s our smartphones, laptops, or even electric vehicles, a battery that can go the distance without requiring frequent recharging is highly sought after. But what type of battery truly stands out in terms of longevity? And are lithium batteries better than AGM (Absorbent Glass Mat) batteries? Let’s delve into these questions and find out.

When it comes to longevity, lithium batteries have gained significant attention in recent years. Lithium-ion batteries, in particular, are known for their impressive energy density, allowing them to store more power in a smaller and lighter package. This attribute makes them highly desirable for portable devices such as smartphones and laptops, where size and weight are crucial factors.

In addition to their high energy density, lithium batteries also boast a low self-discharge rate. This means they can retain their charge for extended periods, even when not used. As a result, lithium batteries are ideal for devices that are intermittently used or left idle for long periods, such as emergency backup power supplies.

Another key advantage of lithium batteries is their ability to handle deep discharges without suffering from memory effects. Memory effect is when a battery loses capacity when repeatedly charged without being fully discharged. Lithium batteries, on the other hand, are not prone to this issue, allowing them to maintain their full capacity for a longer period.

On the contrary, AGM batteries, commonly used in vehicles and marine applications, have their own set of advantages. AGM batteries are known for their exceptional durability and long service life. They are designed to withstand deep cycling, making them suitable for applications that require repeated discharging and recharging, like electric vehicles and off-grid solar systems.

Moreover, AGM batteries are known for their robust construction, which makes them highly resistant to vibrations and shocks. This feature is particularly important for automotive and marine applications, where batteries are subjected to rough road conditions or rough seas. AGM batteries also have a lower risk of leaking or spilling, making them safer to handle and maintain.

While lithium batteries excel in terms of energy density and low self-discharge rate, AGM batteries have the upper hand when it comes to durability and ruggedness. The choice between these two types of batteries ultimately depends on the specific application and the user’s requirements.

Both lithium and AGM batteries have their unique advantages when it comes to longevity. Lithium batteries shine in terms of energy density, low self-discharge rate, and resistance to memory effect. On the other hand, AGM batteries offer exceptional durability, long service life, and resistance to shocks and vibrations. It’s essential to consider the specific needs of your device or application to make an informed decision about which battery type will best suit your requirements.

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C. L. Beard
Energy Wrinkles

I am a writer living on the Salish Sea. I also publish my own AI newsletter https://brainscriblr.beehiiv.com/, come check it out.