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Step 5Building the Power Supply
Step 5: Battery pack is made from four 18650 Li-ion cells.
Overview: LED driver and on/off switch will be placed inside water bottle with battery pack. Battery terminal leads use a Molex connector for charging and connecting to driver.
A. Parts Needed: 18650 battery pack from Battery Space with built-in poly-switch and PCB for protection, Molex wire connectors, on/off toggle switch, buck-puck LED driver with pot for dimming.
B. Assemble the wiring harness with solder and shrink tubing. Shown in the third photo is the wiring harness; clockwise from top: dimming pot, LED driver, blue and white wires to LEDs, on/off toggle switch, Molex connector to battery.
C. I used a two-pin connector between the power supply and LEDs, but any good connector will work and preferrably one that can keep out moisture and dirt.
Overview: LED driver and on/off switch will be placed inside water bottle with battery pack. Battery terminal leads use a Molex connector for charging and connecting to driver.
A. Parts Needed: 18650 battery pack from Battery Space with built-in poly-switch and PCB for protection, Molex wire connectors, on/off toggle switch, buck-puck LED driver with pot for dimming.
B. Assemble the wiring harness with solder and shrink tubing. Shown in the third photo is the wiring harness; clockwise from top: dimming pot, LED driver, blue and white wires to LEDs, on/off toggle switch, Molex connector to battery.
C. I used a two-pin connector between the power supply and LEDs, but any good connector will work and preferrably one that can keep out moisture and dirt.
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