18650 battery vs aa

18650 battery vs aa

18650 batteries have rechargeable lithium-ion batteries that are slightly bigger than alkaline AA batteries, with around double the standard voltage. 18650 batteries cost more than AA batteries and require additional hardware for recharge. So, to know more about 18650 Battery vs AA read the article.

But many flashlights are designed to work with 18650 batteries since they’re more reliable, powerful, and eco-friendly.

18650 battery vs aa


If you’re looking for a durable and complete kit that comes with 18650 rechargeable lithium-ion batteries, a charging device and a flashlight for them to be placed in you should consider this Maxiaeon 18650 Tactical Light and 3.7V Rechargeable High-Capacity Batteries and Charger.

The kit includes everything you need and is available at one of the lowest prices available and making it a more appealing bargain.

The flashlight has a high-lumen output, 2,000 lux, that is visible across the entire spectrum. It comes with five modes of light which include medium, low high, strobe, and SOS, which makes it an ideal emergency light.

It can last up to 6 hours in a medium beam before needing to recharge. It’s also IP-65 certified for water resistance and is able to be used in some of the heaviest rains.

The batteries come with a 3.7-volt capacity, with a capacity of 9,900mAh that’s the greatest, and can do the job. They are fully charged in just eight hours.

Key Features

  • The kit is complete and includes flashlights as well as batteries and a charger
  • 3.7-volt capacity, 9,900mAh
  • Flashlights are equipped with 2,000 lumens of output power


  • Brand: Maxiaeon
  • Casing Colour: Black
  • Power Supply: 3.7V 18650 battery
  • Lifespan: 100000 Hours
  • Switch Type: Tail Cap
  • Zoomable: Yes


  • Excellent quality for the price.
  • Super-low cost
  • Small and light


  • Batteries require long to fully recharge
  • The charger isn’t equipped with an automatic shut-off feature Therefore, you must take the batteries off to avoid overcharging.

Why Do You Need a 18650 Battery for Your Flashlight?

18650 batteries are the most cost-effective utilization of space in the field of battery technology. While non-rechargeable AA batteries produce approximately 1.5 voltage, while rechargeable alkaline batteries emit between 1.2 to 1.6 Volts, the typical 18650 battery can produce more than 3.5 voltages from the same area. This lets your flashlight shine brighter with no substantial changes.

If the same amount of power from one Li-ion battery as you can from four AAA batteries isn’t enough an additional benefit to 18650 batteries lies in their long-life cycle.

If you have a device that has high discharge rates the 18650 battery is prone to degrade capacity slower as compared to an AA battery or any other alkaline battery, which means it will last longer before you’ll need replacement.

The 18650 batteries will pay for itself in a short time, and that includes the expense of the battery charger.

18650 lithium batteries are much safer than traditional alkaline cells. They’re far less vulnerable to leaks that could damage devices (or the hands of your children). Certain models are “protected,” and include internal circuits, making them less dangerous to short or overheat circuits.

Certain batteries also come with external protections that take the form of nickel plating that is protective. However, even “unprotected” 18650 batteries are generally more secure than alkaline batteries. Read more about 18650 Battery vs AA.


  • A much higher output of energy from a similar size cell.
  • More time to be replaced
  • Devices are protected from heat loss, leakage, and short-circuiting

What to Look for When buying a 18650 Battery for Your Flashlight

18650 batteries are relatively easy to locate as they require one thing: release enough energy to ensure that your lightbulb is bright. But, not all the 18650 batteries are alike There are some things to bear in mind when selecting the best one.

  • Protected in contrast to. Unprotected

As previously mentioned, 18650 batteries are essentially safer than their alkaline counterpart however, they don’t come with the same security measures. To be considered to be protected, it must have at least a PTC (pressure or temperature current) switch that shuts off the battery when it’s in danger of being overcharged or overheated.

The battery also includes a pressure switch that will permanently shut off the battery if its internal pressure gets excessive. Check more about 18650 Battery vs AA.

The majority of 18650 batteries that are available have these internal safety features. Protections on the outside, that aren’t as than standard, but are still very typical, typically include inhibitor plating to avoid short circuits.

If a battery sold in the market is labelled as unprotected it is less expensive and will include a note on how to use it correctly (which is a must to follow). It’s your responsibility to determine if it’s worth the risk to save some money however we suggest purchasing a protected battery. It’s not much more.

  • Capacity and Current

Capacity (measured in milliampere-hours, or the mAh), as well as the current (measured by amps, or), are two indicators of what rechargeable batteries can do to power the lightbulb or any other device it powers.

Batteries with higher capacity last longer, and more current batteries give greater power in a single.

The majority of battery design is a compromise between these two attributes. Flashlight batteries vary from powerful batteries that can lose charge rapidly to batteries with low output lasting for a longer duration.

When selecting a 18650 battery, you must first make sure that the flashlight you’re running is a particular model that has specific requirements. Find a battery that balances capacity and output.

Tips for Using 18650 Batteries for Flashlights

18650 batteries are excellent tools to get the most use out of your lightbulb. If they’re not functioning the way you’d expect you can check out this guide below for some helpful suggestions.

  • Established brands of batteries provide the weights for their entire range available on their websites. Take advantage of these weights when you weigh your 18650 batteries, to be sure that it is authentic.
  • Continuous discharge rate (CDR) is an indicator of the amount of power a battery can manage to produce. Find out how much current your flashlight needs and ensure that you’ve purchased the right battery for your needs.
  • You can prolong the lifespan of many 18650 batteries by ensuring that you charge them prior to discharge.


This is one of the top 18650 batteries for flashlights. It is a 2000-lm LED light source. The huge capacity 18650 rechargeable battery provides 36 hours of continuous lighting.

They also come with a USB charger. Test them out in your flashlight with LEDs and you won’t be disappointed by the enhanced quality. So, this concludes the topic for 18650 Battery vs AA.


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