The 21700 rechargeable lithium ion battery is the perfect power source for this Jetbeam TH20 Guardian. It's also easier to use. Main button will activate the last used brightness mode. While on, double click either paddle for Turbo. Really cool User Interface! Long runtime with the 21700 battery. The light itself is USB-C rechargeable, and can even be used as a powerbank! Amazing technology!

Also, the service from Battery Junction is superb. Even though I pre-ordered it over Memorial Day to take advantage of the storewide sale, this brand-new light was shipped quickly to me the very next day they received it in stock. I was kept aware of the date for expected shipping, the actual date, and sure enough Battery Junction shipped it on that date.

I highly recommend purchasing your latest and greatest rechargeable flashlight from Battery Junction. They are very dependable and reliable.

The Jetbeam TH20 is now my ride along light. It sits in the console of my SUV. The beam is great. Turbo is accessible from the tail along with an amazing strobe if you're into that. I'm a light hound with several hundred lights, and this is one I trust to do vehicle duty. I highly recommend.

The Jetbeam TH20 Guardian is a basic bright tactical flashlight controlled by a tail switch. It is noticeably brighter than previous TH20 and has convenient USB-C charging port on board. High capacity 5100 MAH 21700 battery is included for longer run time. Check it out.