The 18650 battery is a cylindrical battery. It is used in a large number of portable electronic gadgets like laptops, power tools and other portable gadgets.
The 18650 battery has higher energy density. It weighs a little over an ounce and a half. Users have more power for their gadget without having to add any significant weight. These batteries don’t need long-drawn-out preparation to get it ready. All that is required to get it started is just a single charge.
The 18650 battery will explode if mishandled, or not charged or discharged properly. You should always follow the recommended charging practices when you are charging the 18650 battery and protect yourself and your surroundings from explosion.
Overall, the NiCd rechargeable battery has become very popular. It is used widely for laptop and other portable power devices. It can dominate the battery market, if the manufacturers are able to deal with the left-behind safety issues. The 18650 battery are fully protected cells that tend to simplify usage with their integrated PCB. It is perfect for your single cell application. The 18650 battery cells are not designed for pack building. Doing so will defeat the PCB protection as that is matched to the correct voltage on a single cell. In case you are building a pack choose other cells and the appropriate PCB.
The 18650 battery has an integrated PCB Protection. It has a flat top terminal. The internal PCB protection is able to prevent under-voltage at 2.5V as well as over-voltage at 4.25V. It has a unique PCB design and a lower weight than the other types of rechargeable batteries.
The battery is well tested in order to ensure capacity, quality and life time. The lighting or other devices need 3.7V power. The NiMh battery is used for building portable power device needing high energy density and low weight. It has a nominal capacity of 2600 mAh. The internal PCB protection prevents under-voltage and over-voltage.