Product Specification: 

Specifications:

- mini PCB board (thumb size) (diameter: 17mm / 0.668")

- 1 x AMC7135

- Resistors

- 350mAh regulated output

- Maximum 3.5V output

- N4148 batch wiring

- This board works best with LED bulb that consume less than 3.7V

- See pictures: default at 350mA

Package Content:

20 x (1 x AMC7135) circuit board (picture shows 2xAMC7135 version)

Included two 1" wire (black/red) for EACH circuit board

This graphic is for 2xAMC7135 only. 1xAMC7135 gives 70ish lumens with P4 with longer runtime.

Using a 18650 cell, powering a P4 XR-E.

Both 2xCR123A Lithum cell and 1x18650 cell gives 110-120 lumens (tested), light last about 3 hours+ for 18650 and less for 2xCR123A. The excellent AMC7135 performer provides 100ish lumens for the long and durable regulated runtime.