Protected 18650 (3.7 V) Lithium Battery Cell is a high-quality product that depending upon the application, can be used as a solo unit in any rechargeable device or can also be made into a high-capacity battery pack by combining multiple cells in a pack. We have various denominations available in 18650 – 3.7 V Lithium Cells 2500 mAh, 2500 mAh,These 3.7 V lithium cells find their use in a multitude of applications such as Torches & Flashlights, Search Lights, Solar Lights, Power Banks, Battery Packs, Battery Powered Toys, Medical Equipment, and other such rechargeable equipment, etc. These Hongli Lithium-ion rechargeable cells are fully compatible with FOS Search Lights, FOS LED Flashlights, FOS Solar Lights, Search Lights, Flashlights, and Solar Lights. Please Check the connector before ordering Excellent Battery and full backup.