18650 Cylindrical 3500mAh Lithium Ion Battery For Toys Power Tools

Lithium primary battery is a high-energy chemical primary battery, commonly known as lithium battery. Metal lithium is used as the negative electrode, solid salts or salts dissolved in organic solvents are used as the electrolyte, and metal oxides or other solid and liquid oxidants are used as the positive active material. General-purpose circular lithium manganese dioxide batteries and lithium fluoride carbon batteries are represented by the letters CR and BR, respectively, and the subsequent numbers represent the model of the battery. Lithium primary battery is a general term for this type of chemical power supply series using metallic lithium as the negative electrode material.
Lithium primary batteries have various structures such as button type, rolled cylindrical shape and rectangular shape. Lithium primary batteries have the advantages of high specific energy, long life, and resistance to leakage. Common structural forms of lithium batteries are cylindrical carbon pack type, square stacked type, cylindrical stacked type, cylindrical winding type, square winding type, etc.

FQA:

1. Can A 18650 battery be 5000mAh?
Battery Type: 18650 Rechargeable Battery. Voltage: 3.7v. Capacity: 5000mAh.

2. How many 18650 batteries do I need for 12V?
Connections for 12V Battery Pack with BMS. Every 18650 cell can be charged up to 4.2V; we need three cells in series to make a 12.6V battery pack. In the figure above, the connections are indicated. The BMS is to be mounted as indicated above.

3. Do laptops use 18650 battery?
In a typical laptop battery, there are 6pcs of 18650 lithium-ion cells. An 18650 cell is just a cylindrical cell with a diameter of 18mm and height of 65mm (approximately).

4. Can a single 18650 charge a phone?
Lithium 18650 cells are 3.7V, which is too low to charge modern phones. They require a 5V supply. You could use a suitable boost convertor. A battery of 2 cells in series would supply 7.4V, too high for a standard USB connection.