How to make POWER BANK using D-Size Battery

How to make a Power Bank using a single 1.5v D-Size Battery.

Things required:
1) DC-DC Boost Converter
[Input: 1v-5v, Output: 5v]
2) D size Battery(1.5v)
3) Rubber Wristband
4) Wire, et cetera.
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Most of this type of boost converter module has a low output current so charging time will be comparatively more but this handy charger can be a lifesaver in some emergency as 1.5v batteries are easily available in most of the stores all over the globe.
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This charger will work on any 1.5v to 5v battery e.g. AA, AAA, D etc but AA and AAA batteries will have very less juice as compared to D size battery.
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MUSIC
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Chipper Doodle - Electronic Light by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100854
Artist: http://incompetech.com/
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Видео How to make POWER BANK using D-Size Battery канала SNNY Hack & Sci.