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HKN 100% Actual 2200 MAH Capacity Battery 3.7v 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 Capacities available in 18650 – 3.7v Lithium Cells as 2200mAh. These 3.7v 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 rechargeable equipment, etc. These HKN Lithium-ion rechargeable batteries are fully compatible with FOS Search Lights, FOS LED Flashlights, FOS Solar Lights, Search Lights, Flashlights, and Solar Lights. The lithium-ion rechargeable batteries are widely used in GPS, DVD, Tablet PC, MP4 Player, Power Bank, Mobile Backup Power Supply, Bluetooth Speaker, IoT, and industrial applications. FEATURES: Pack over-voltage Protection Pack under-voltage Protection Overvoltage Protection, CELL Under-voltage Protection, CELL Over Load Protection Overcurrent Protection Short circuit protection Reverse Polarity Protection