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Discussion Starter · #1 · (Edited)
I'm working on a little hobby project.
essentially I want to power a set of LED lights that are typically run off a 12v DC (automotive), to be run off a much smaller portable battery instead.
Id considered a 9v battery hookup but I'm not sure that will have very much power to run the lights for very long. Are the lights likely to be about 25% dimmer running on 9v than 12v as well?

the other idea I have is, to run them off one of those little rechargeable cell phone battery boosters you can buy now for about $5. but I'm not sure how to wire that up to power the lights due to the USB or mini usb port connection. any thoughts?
something like this, but I'm flexible
https://www.walmart.com/ip/2600mAh-...kup-Blue/42556861?variantFieldId=actual_color
the setup has to be pretty durable as well as resistant to heat.
I guess the other question should be, will this provide more power than a 9v batt as I'm just assuming it does?
Edit: the portable batt pack may not be feasible as it appears to be running closer to 3.7v....so back to the 9v batt I guess
 

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Discussion Starter · #9 ·
Thanks guys.
I did a test of the lights with the 9v batt...it does seem to work normally. I'll have to do a side by side beside a 12v to see if theres a drop in brightness.
I'll have to dig up some info on power consumption of the lights. their just cheap led strip lights from ebay (china).
 
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