Klarus 18GT-40 18650 Lithium Battery | 4000mAh

4000mAh is the highest capacity in this range, meaning longer runtime per charge in any compatible torch or headlamp before needing to swap cells mid-shift or mid-trip.

Protection is built in against overcharging, over-discharging and short circuits, which suits flashlights that don't manage that themselves, most consumer and mid-range lights fall into that category rather than having their own protection circuitry built into the light.

Specifications

• 4000mAh capacity, highest in this range
• Overcharge, over-discharge and short-circuit protection
• Protected cell, standard flashlight compatibility

A solid pick for tactical flashlights, camping lights, security work and emergency backup lighting where runtime matters more than shaving off a few grams. For a higher discharge rating at slightly lower capacity, the Klarus 18GT-36 elsewhere in this range is the better fit for higher-drain Turbo modes.