The modification method is as follows:
1. Open the screws at four corners of the battery, carefully open the top cover, and use a soldering iron to remove the battery wire.
2. After removing all the old batteries, insert the lithium battery.
3. Connect the battery terminals and wrap them with electrical tape.
Generally speaking, the brightness of the flashlight does not change significantly. The driving voltage of a 3W LED is generally around 3.6V. In fact, the key to determining the brightness is the size of the driving current, which depends on whether the flashlight's driving circuit has this function.
Generally, nickel-metal hydride batteries have larger power capacity than ordinary AA batteries, and higher-quality nickel-metal hydride batteries also have advantages in discharge current, heThere is therefore generally no difference in brightness.
I am a manufacturer of titanium lighting for flashlights, can I share with you. ?It is the brightest model among 3 AA batteries. It is equipped with an American CREE R5 LED of 350 lumens. It is compatible with 3 AA batteries or 1 rechargeable 18650 lithium battery. It is only 12 cm long and has good brightness and battery life.