Eagle tac Cr124

Hello, I have a Old Eagle tac,
The Eagletac P20C2 MKII Cree XM-L2 U2 LED with a maximum output of 720 LED Lumens (524 ANSI). Uses two CR123 batteries
Would two 16340 work or is I governed by two disposable, thanks Geordie

Looks like Yes

Probably much shorter run time.

Will be worth it with the 16340 easily carry spares thanks

You can also use a single 17650.