Ultra-Bright LED Light
The most important feature of a flashlight for self-defense is an ultra-bright LED light. A very bright light shined directly in the eyes of a would-be assailant is extremely disorienting and can prevent many bad outcomes in a bad situation.
BATON LENGTH (AT LEAST 9 INCHES)
A tiny, short flashlight won’t do you much good if you have to use it in a self-defense encounter. You need a flashlight long and heavy enough to be used in the event of an attack.
You might drop your flashlight, hit it against a wall or car, or have it knocked out of your hand. A good flashlight for self protection can withstand significant force and impact. Ideally, you want one made out of aircraft-grade aluminum.
If you become incapacitated or need to signal to others, you want a flashlight that with a blinking SOS mode. An extremely bright flashlight, capable of reaching at least 700 feet in the dark, blinking can catch the attention of others far away in case of an emergency.
Rechargeable, Long-Lasting Batteries
You never know when you might need your self-defense flashlight. It must have good, long-lasting batteries. While not essential, rechargeable batteries can save you money in the long run and allow you to easily recharge your flashlight when you can’t run to the store to buy new one-time use batteries.