Hello, nothing to do and make this 18650 Battery flashlights. Very easy to do about 5 to 10 minutes cost me nothing to make them. My local drug store give me the bottles for free and the 18650 battery fits perfect. Very ease to take out the battery and put another one etc. Dont like the on off switch but was the only one I have
Thanks for reading and sorry for my English
https://image.ibb.co/hkyh2y/IMG_7694.jpg
https://image.ibb.co/kRdRUd/IMG_7693.jpg
https://image.ibb.co/eqt4FJ/IMG_7723.jpg
https://image.ibb.co/gHGfpd/IMG_7722.jpg
Thanks for reading and sorry for my English
https://image.ibb.co/hkyh2y/IMG_7694.jpg
https://image.ibb.co/kRdRUd/IMG_7693.jpg
https://image.ibb.co/eqt4FJ/IMG_7723.jpg
https://image.ibb.co/gHGfpd/IMG_7722.jpg