[sdiy] New portable power solution from Befaco

rsdio at audiobanshee.com rsdio at audiobanshee.com
Mon May 28 22:59:54 CEST 2018

Most commodity USB battery packs average 15W, and some are as low as 12W. That’s a lot less than the recommended 45W supply for the LunchBus. The LunchBus can output as much as 16.75W and it’s not 100% efficient, so that means it’s pulling in a lot more Wattage than it’s outputting. I’d say it pulls at least 20W, minimum, and the 45W recommendation allows for headroom and startup current.

You’re better off with a nominal 12V system instead of a 5V system. That falls right in the middle of the 9..15V range. Since many car battery systems actually peak at 13.8V, it’s good that the LunchBus handles up to 15V.


On May 28, 2018, at 10:59 AM, john slee <indigoid at oldcorollas.org> wrote:
> I was really hoping this would have 5v input so I could use a commodity USB battery pack, but alas... what are you using for the 9–15V supply?
> On Mon, 28 May 2018 at 05:41, Jimmy Moore <jamoore84 at gmail.com> wrote:
>> Any word on price or availability?  their website doesn't have much information at the moment
>> https://www.befaco.org/en/lunch-bus/
>> On Sun, May 27, 2018 at 9:07 AM, Quincas Moreira <quincas at gmail.com> wrote:
>>> Hey list!
>>> Been a while since I've shared a review here, but I though you might like to see this cool lunchbox PSU Befaco sent me. I used it to assemble my new travel synth, the Aquarium. Enjoy :)
>>> https://youtu.be/gBs0sSc04MU

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