18650 Lithium-Ion Rechargeable Battery 3.7V 4200mAh - Red

• High-capacity 4200mAh 18650 Lithium-Ion battery provides extended power for compatible devices. • Standard 3.7V voltage output suitable for various electronics like flashlights and power banks. • Rechargeable design offers an eco-friendly and cost-effective alternative to disposable batteries. • Requires an external charger for safe and efficient recharging; charger not included. • Ideal for devices specifically designed to use the 18650 battery form factor. • Red casing for easy identification.