18650 7.4V Lithium Battery Functions & Applications## 1. Product BasicsComposed of two 18650 cells connected in series, with a rated voltage of 7.4V. Built-in protection board ensures safety, stability, long battery life and compact size.## 2. Core Functions1. Provides stable 7.4V continuous power supply with steady voltage output.2. Built-in charge and discharge protection: overcharge, overdischarge, overcurrent, short circuit and temperature control protection.3. Support cyclic charging and discharging, reusable for energy conservation and environmental protection.4. Strong discharge performance, high load capacity and long endurance time.5. Lightweight and portable, shockproof and drop-resistant, suitable for mobile devices.## 3. Main Applications1. Lighting: High-brightness flashlights, headlamps, searchlights, outdoor camping lights, solar LED lights.2. Security Monitoring: Home cameras, wireless monitoring equipment, alarm systems.3. Small Electrical Appliances: Handheld fans, small water pumps, nebulizers, sprayers.4. Audio & Digital Products: Bluetooth speakers, megaphones, media players, outdoor audio systems.5. Tool Equipment: Small power tools, distance meters, thermometers.6. Outdoor Energy Storage: Portable power banks, small outdoor standby power supplies.7. Medical & Household Use: Massage devices, physical therapy instruments, small household charging equipment.