Rechargeable Li-ion Battery 18500 3.7V 1100mAh REAL

18500 Battery 1100mAh – 3.7V Rechargeable Li-ion Cell

The 18500 Battery 1100mAh is a rechargeable lithium-ion cell with a nominal voltage of 3.7V and a real capacity of 1100mAh. It is designed for compatible flashlights, portable electronics, small battery packs and DIY power projects.

The name “18500” describes the cell size: about 18 mm in diameter and 50 mm in length. Therefore, it is shorter than a standard 18650 cell and fits devices and holders made for the 18500 size.

Real 1100mAh Capacity

Many cheap cells print capacities that they cannot deliver. However, this 18500 Battery 1100mAh is offered with a real capacity rating, so you can plan your project’s running time with realistic numbers.

The 1100mAh capacity at 3.7V gives approximately 4.07Wh of stored energy under suitable test conditions. Actual operating time depends on the connected load, discharge current, temperature and cutoff voltage.

18500 Battery Specifications

• Cell size: 18500 (approx. 18 x 50 mm)
• Chemistry: Lithium-ion, rechargeable
• Nominal voltage: 3.7V
• Full-charge voltage: 4.2V
• Capacity: 1100mAh (real)
• Energy: approx. 4.07Wh

Charging the 18500 Li-ion Battery

Charge the cell only with a dedicated lithium-ion charger or charging module that stops at 4.2V. Do not use a charger designed for NiMH, NiCd, lead-acid or standard AA batteries, because an incorrect charger may cause overheating, leakage or permanent cell damage.

Moreover, avoid leaving the cell fully discharged for long periods, since deep discharge shortens its life.

Suitable for Flashlights and Battery Packs

The 18500 Battery 1100mAh can be used as a single cell or combined with matching cells to build a small battery pack. When connecting cells in series or parallel, use cells of the same model, capacity and charge level.

Furthermore, every assembled pack should use an appropriate Battery Management System (BMS) that matches the number of series cells and the required current.

Compatibility Information

Check the battery compartment length before ordering, because 18500, 18650 and 18350 cells share the same diameter but have different lengths. In addition, this cell does not have a specified high-discharge rating, so it is not intended for high-current loads such as power tools or high-power motors.

Battery Safety

Never short-circuit, puncture, crush, open or reverse-connect the battery, and keep it away from fire and excessive heat. Do not use a damaged, swollen or leaking cell. Store it in a cool, dry place away from metal objects and out of the reach of children.

Most Electronics stocks the 18500 Battery 1100mAh in Cairo and ships to every governorate in Egypt, with cash on delivery available.