Everything you need to know about 1.5V rechargeable li-ion batteries

Have You Bought Electronic Devices in the Last 10 Years and Needed a Power Source?

You may have faced the problem that devices such as drones, RC cars, trail cameras, etc., no longer use 1.2V batteries but generally require 1.5V ones. This leaves you with two options: either buy 1.5V alkaline batteries and dispose of them after use (which is not only economically inefficient but also harmful to the environment), or use 1.2V rechargeable batteries, which, when fully charged, are 1.4V and can theoretically be used down to 0.9V. However, at around 1.1V, they no longer operate 1.5V devices, so practically, you can only get about 1000mAh out of a factory-rated 2000mAh battery.

Neither option is ideal, but there is a solution! The 1.5V rechargeable Li-ion battery! But what exactly is this battery, and what do you need to know about it?

What Makes 1.5V Rechargeable Li-ion Batteries Special?

These batteries do not differ chemically from traditional Li-ion batteries; they are the same 3.6V batteries. The difference is that they include a special voltage regulator that monitors the battery's condition, preventing overcharging and over-discharging, and converts the battery voltage to 1.5 volts. Brilliant, isn't it?

Why Choose 1.5V Rechargeable Li-ion Batteries?

Because this solution combines the low voltage of Ni-MH batteries without their negative characteristics with the good properties of Li-ion batteries:

• Rechargeable: They can be reused, making them cost-effective in the long run, with up to 1200 charge cycles (though after 800 charges, capacity may decrease, but this is true for all batteries).
• Less Waste: They generate less waste compared to disposable batteries.
• Higher Capacity and Low Self-Discharge Rate
• No Memory Effect
• Fast Charging: Ni-MH batteries can only be charged at 0.25A, whereas Li-ion batteries can be charged at up to 1A.
• Stable Voltage: The battery either provides 1.5V or is empty, avoiding continuous voltage drops (some models have an LED indicator to show when the battery is low).

Disadvantages

• Higher Initial Cost: They may cost more upfront than disposable batteries (but after about 5 charges, they pay off) or Ni-MH batteries (after 2 charges, they are more cost-effective), but they are worth it in the long run.
• Special Charger Required: They cannot be charged with any charger (but there are chargers available that can charge 1.2V, 1.5V, and 3.6V batteries, reducing costs).
• Complex Internal Circuits: Due to the new technology, more complex internal circuits are needed for voltage regulation (though this is more of a concern for manufacturers).

Why Haven't Everyone Switched to 1.5V Li-ion Batteries?

Good question. Most people have gotten used to Ni-MH batteries, have many of them, and are reluctant to switch. However, for regularly used devices, 1.5V Li-ion batteries pay off the purchase price in a few months. For devices used less frequently, the memory effect of Ni-MH batteries can be problematic as they tend to degrade if not used for months, whereas Li-ion batteries do not.

Is It Worth Getting Built-in Charger 1.5V Batteries?

Yes, especially if you need only 1 or 2 batteries. If you need more, it’s more cost-effective to buy the batteries and a charger. For more than four batteries at a time, there are compatible chargers available.

Which is the Best 1.5V Battery?

We recommend Xtar, Vapcell, or Keeppower batteries, all of which are of excellent quality. If you're looking for the highest capacity, the 4150mWh Xtar battery is the largest for AA size, and the Xtar 1620mWh battery is the largest for AAA size.