Could a 12v LED light strip be powered by a portable power bank

i don't know the exact specifications for my LED light strip but i know a 12v 2500mah lithium battery powered it for at least 2 or 3 hours, unfortunately it was a crappy Chinese knock off battery that damn near blew itself up after repeated use and i can't find a replacement that doesn't look like exactly the same battery. with that in mind are there any small power banks with a 12v output that i could use? or is there some means of boosting a 5v output power bank which seems to be the most widely available type?

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Eric Brouwer11 months ago

What about using a 12V, 2.5Ah battery?

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ambientvoid (author)  Eric Brouwer11 months ago

i would prefer to, they're nice solid batteries but i measured it and its too thick to fit in the battery space, so far it looks like a flat pack (1 battery thick) of AA batteries is the only thing that will fit. if that doesn't work out im not sure what i'll be able to use instead.

iv worked out that i can get my samsung smart phone in the gap with very little extra space, its a shame there doesn't seem to be a hardcase battery in AA battery pack size...

thanks for the suggestion though :)

Toga_Dan11 months ago

8 cells of 1.5v each makes 12v .

ambientvoid (author)  Toga_Dan11 months ago

how high a capacity pack could I make with this method? and what type of battery (nimh, nicd, lithium etc) do I need for best performance? and is there an instructable or something for how to connect them into a pack?

google "battery holder" and battery series connection . I'm not sure of best possible chem. Capacity, to some extent depends on if you start with D cells, aaa cells, or whatever.

Toga_Dan Toga_Dan11 months ago

http://www.maxxima.com/products/product_detail/299/Battery-Pack.html#.WC8LHy5lD2w

ambientvoid (author)  Toga_Dan11 months ago

would an RC 12v nimh battery pack like this be suitable: http://www.componentshop.co.uk/12v-2600mah-flat-5x2-aa-nimh-battery-pack.html ?

Probably. BUT.. The best approach is likely to find out how much current the LED draws. If it isn't printed on it, you can get a multimeter for $0 to $20. Hook it, and the LED up to your car battery (or some other complete overkill voltage source) and find out how many milliamps it pulls. Then you can compare numbers.

ambientvoid (author)  Toga_Dan11 months ago

i don't drive so i don't have a car battery. The biggest 12v source i have is a bunch of 7ah sla batteries, would one of those be adequate for testing?

amp hours is part of the equation, but amps is another. If the battery doesn't get hot while powering the LEDS, then it's fine. If your not certain of adequate amperage, then hook batteries in parallel.

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