Good Quality 1800 mAh ICR18650 3.7V Lithium-Ion Battery

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Cylindrical Li-Ion Battery, no memory effect and longer storage life than NiMH battery, lighter weight and higher energy density than any other rechargeable battery. It has a 1800mAh High Capacity, High Energy Density and Low weight compared to other rechargeable batteries Battery based on International Electro-Technical Commission (IEC) standard Testing to ensure capacity, quality, and lifespan.

Nominal Voltage 3.7V
Max Charge Voltage 4.2V
Rechargeable  Yes
Capacity 1800 mAh



Frequently Asked Questions

What does 1800mAh mean in a 1800mAh Li-ion battery?
In 1800mAh battery 1800 means that the battery can provide 1.8A (1800mA) of current for 1 hour.

How long it will take to charge a 1800mAh battery? 
If your charger is rated for 2A output current then it takes a minimum of 1 hour to completely charge a 1800mAh battery.

How long will a 1800mAh battery last on one full charge?
It totally depends on the load, if it is pulling 1A current then it should last for 1.8 hours.

Can we replace the 1800mAh battery with a 2200mAh battery?
Yes, you can replace the 1800mAh battery with a 2200mAh battery but voltages should be the same.

Can we use a 2200mAh battery instead of a 1800mAh battery?
No, You should not use a 2200mAh battery instead of a 1800mAh battery. It is not recommended to replace a higher mAh battery with a lower one.

Why are Lithium batteries 3.7 volts?
The Lithium batteries are 3.7 volts because the voltage is dependent on the materials used in the cell chemistry.

How to restore Li-ion battery?
Lithium-ion battery when completely dead cannot be revived and restored.

How to charge a 3.7 volt Lithium battery?
For charging a 3.7V Li-Ion battery use a charging module like TP4056 with a protection module to avoid over-charge and over-discharge conditions.

Where to recycle Li-ion batteries?
Li-ion batteries should be recycled at certified battery electronics recyclers that accept batteries rather than being discarded in the trash.

How to make a 12V Li-Ion battery pack?
We can make a 12V battery pack by connecting three Lithium-ion cells(3.7V) in series, the voltage will be added in series which will make it 12V.

Are Li-ion batteries dangerous?
Li-ion batteries are generally safe, but if they are mistreated or used incorrectly, they can catch fire or explode.

How to awaken a sleeping Li-ion battery?
Connect the battery to a suitable charger for a few minutes while keeping an eye on it to see if there are any indications of damage or healing. Use a charger that has a "boost" or "wake up" mode. Keep in mind that boosting a lithium-ion battery with a voltage of 1.5 or less is not suggested.

How to charge a 7.4 v Li-ion battery?
For charging a 7.4 V Li-Ion battery use a charging module like TP5100 with a protection module to avoid over-charge and over-discharge conditions.

What is "18650" in 18650 Li-ion battery?
In a Lithium-Ion battery "18650" signifies its specific measurements where 18 is the diameter of the battery, 65 is the length of the battery, and 0 at the end simply means it is cylindrical.

Why does the Li-ion battery swell?
Due to too much current inside a cell of the battery, which causes a build-up of heat and gas. This can be caused by overcharging, manufacturer defects, deep discharge, or damage to the battery.


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