rechargeable, battery-powered task light

Components & Accessories LEDs
1

Hi folks,

I’m building a rechargeable, battery-powered task light (my first electronics project). Would love help evaluating my approach. Here are the components I’m planning to use:

For the charging station:

— USB-C Wall Adapter - 5.1V, 3A

— USB 2.0 Type-C Cable - 1 Meter

— SparkFun LiPo Charger Plus

For the task light:

— Lithium Ion Battery - 2Ah

— JST Right-Angle Connector - SMD 2-Pin, wired to driver

— FemtoBuck LED Driver

— LED - 3W Aluminum PCB

— Heatsink - 13.20x12.10mm (Copper) backing the LED

— On/off switch of some kind

Let me ask:

— Does this seem like a workable approach?

— Is the 2Ah Lithium Ion battery compatible with the FemtoBuck?

— What would you recommend for an on/off switch?

— Should I wire the switch between the JST connector and the FemtoBuck, or between the FemtoBuck and the LED?

— Do you sell a board or substrate of some kind that I can assemble the various components on?

Thank you so much in advance!

Regards,

Eric

2

Mostly workable. The femto buck uses 6v-36v as input, you’d need a higher voltage battery like this’n https://www.sparkfun.com/products/11855

Those 3W LEDs can get warm, mount it away from your skin

I’m partial to silly looking switches like https://www.sparkfun.com/products/9276 but we have a few other options too https://www.sparkfun.com/search/results … b=products

Wire it between the JST and femto, or somewhere else in-line with the battery

We have a few things that might help? https://www.sparkfun.com/categories/302

3

@TS-Russell thanks for these tips–much appreciated.

I see the battery you linked is a dual cell battery pack, and that is a single-cell LiPo charger. I assume this means I’ll need a different charger.

Is <SkyRC IMAX B6 V2 Professional Balance Charger / Discharger> a good candidate? https://www.sparkfun.com/products/16793

Thanks in advance,

Eric

4

Oh wait, I see that unit is out of stock with no estimated re-stock date. If you’re able to recommend a charger, that would be helpful.

5

Good catch; yea we’re slim on options right now but you’re looking for any charger that can do “2S Lipo” in its specs :slight_smile:

6

Thank you!! I’ll look around.