LED Flashlight

This flashlight I have been using about 3 months ago, I was quite happy with the result although a little difficult to install components. The idea comes from here: http://www.instructables.com/id/LED-Torch-2, there are some components that I replace it with what I have.

Electronic components that I use is:

1. 8 mm straw hat LED
2. 6.8Ohm Resistor 5%
3. Diode IN 4007
4. Push Button Switch(http://www.ebay.com/itm/10x-Red-Push-Button-Switch-6-Pins-Latching-DPDT-Tact-Tactile-Self-locking-DPDT-/380810457498)
5.DC power jack (http://www.p-wholesale.com/upimg/5/121a2/dc-power-jack-570.jpg)
6. Battery 4V 1200mA
7. 3mm allen socket bolt with 10mm long, 2 pieces.
8. 3mm hex screw nut, 2 pieces.

I also attach a new diagram, this flashlight can light up more than 8 hours. Charging the battery using an adapter 5V 1A for 1.5 hours.