A AA size lithium battery is a type of battery with the same dimensions as a standard AA battery but made with lithium chemistry. That means it packs more energy, lasts longer, and handles extreme temperatures better than regular alkaline AA batteries.
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It’s often used in high-drain devices—things that need a lot of power fast. Think digital cameras, GPS devices, or medical equipment.
An AA battery is 14.5 mm in diameter and 50.5 mm in length. That’s standard.
So when we say “AA size,” we’re talking about batteries that will fit any device made for standard AA cells. But lithium AA batteries sometimes weigh less, which is a bonus for portable devices.
The shape is the same—cylindrical. So you don’t need to worry about fit.
Here’s where things get interesting.
And what about capacity?
Higher voltage means more power. But always check what your device needs before switching.
Not all lithium AA batteries are created equal. Here are the main types:
So before buying, know the chemistry. It matters.
You’ll find single-cell AA lithium batteries for most consumer devices.
But for industrial or custom uses, AA-size lithium battery packs are common too. These packs combine several AA cells into a unit—usually wired in series (to increase voltage) or parallel (to increase capacity).
For example, a 4-cell pack might provide 6V total if each cell is 1.5V. Packs can also be custom-built for specific machines or electronics.
Ufine Battery, a leading lithium battery manufacturer in China, specializes in custom lithium battery packs—including AA-size lithium batteries. Whether you need higher voltage, unique connectors, or industrial-grade stability, Ufine offers tailored solutions for your specific needs.
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Let’s break down the differences.
The Difference Between Primary and Secondary Battery
Rechargeables save money long term but require compatible chargers. Use caution if your device can’t handle higher voltages.
At first glance, AA size lithium batteries and lithium-ion batteries look nearly identical. Both share the same cylindrical shape, and both measure approximately 14.5mm in diameter and 50.5mm in length. So it’s easy to assume they’re interchangeable.
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All About Lithium Rechargeable Battery
But in reality, these two battery types are fundamentally different—and using one in place of the other could damage your device.
Let’s break down the key differences:
Why it matters:
If you insert a battery into a device designed for 1.5V AA batteries, you risk overvolting the electronics, which can cause overheating or permanent damage.
Don’t recharge a regular AA lithium battery unless it’s clearly marked as rechargeable. Only cells should be placed in a lithium-ion charger.
Unfortunately, some brands market batteries as “AA lithium” because of the size similarity. But this can be misleading and dangerous. Always check:
A true battery will always say 3.6V/3.7V and typically have higher energy output but lower cycle life than standard rechargeable NiMH AAs.
Great question! Here’s how:
Don’t guess. A wrong battery could damage your device.
Yes, 100%. If you need reliable power, long life, or lightweight performance, AA size lithium batteries are a solid upgrade from regular AA batteries. They’re ideal for high-drain devices, cold environments, and industrial tools.
Just remember:
Ufine Battery can help you find or design the perfect lithium battery for your needs. They specialize in custom lithium solutions, including AA size, LiFePO4, , high-rate, and high-temperature batteries.
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Yes, if your device supports it. Lithium lasts longer and performs better in cold weather. But double-check voltage compatibility.
No. Most AA lithium batteries sold in stores (like Energizer Lithium) are non-rechargeable. Rechargeable lithium-ion AA batteries are a separate category.
Only if they’re rechargeable and the charger is designed for lithium cells. Never charge a non-rechargeable lithium battery. It can be dangerous.
They last longer, weigh less, and work in harsh conditions. That added performance comes at a higher upfront cost—but they save money over time.
Ufine Battery offers high-quality custom lithium battery solutions, including AA-size cells and packs. You can request custom voltages, capacities, and more.
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