18650 Li-Ion batteries are generally used in professional high-grade flashlights as they offer maximal capacity for most energy-consuming products. 

A protected Li-Ion battery integrates a special electronic circuit which secures it from full discharge, short circuit and overcharge. Protected 18650 Li-Ion batteries provide safe and effective operation for powerful flashlights that work at high amperage.

• Made in Japan high-grade ICs. They are notable for low power requirement and high reliability. It means you get more advanced device performance.
• Possibility to work even under heavy loading. You will appreciate high battery discharge rate – up to 7.5 Amperes.
• The best chemistry in the world
• Triple protection against short, over-discharge, over-charge.
• 304 Stainless steel plate reinforced bottom. This unique structural design provides better impact-resistance.
• Safety vent with thermal cut-off protection. You get reliable protection of your device from overheating.