Klarus rechargeable lithium-ion batteries deliver reliable power for your tactical flashlights and headlamps. Available in multiple formats including 18650, 21700, 16340, and 14500 with capacities ranging from 700mAh to 5000mAh, our high-performance batteries ensure extended runtime and consistent output for professional and outdoor use.

Our battery lineup includes the 18GT-36 and 18GT-IMR31 models, perfectly compatible with Klarus XT11GT, XT11X, XT12S, XT12GT, 360X3, G10, and G35 tactical flashlights. The 21GT50 battery powers the high-output XT21X PRO and G15 models, while the 21GT-E50 is specifically designed for XT21C, E3, and GL4 flashlights.

All Klarus batteries feature built-in protection circuits, reliable performance in extreme temperatures, and are rechargeable for cost-effective long-term use. Perfect for law enforcement, security professionals, outdoor enthusiasts, and everyday carry applications.

Fast shipping across Canada.