Put a first quick shell together for a DNA30 powered by a 6000mAh pack. Tried to make it as small as possible but still fit the guts... There's very little unused space. Just a bit larger than a REO Grand and it powers through 9+ TGT tanks between charges so it's great for a 3 day weekend away from a charge source.
Door is secured with 12 1mmx1mm magnets.
The shell is plexiglass heated with a hairdryer to bend around a piece of wood. I was thinking about 12Ah but the shell ended up a touch shallow so it got cut down to just fit one pack.
Harbor Freight 2 part epoxy holds the ends together and was used to form a cradle to hold dna but it is strapped vs. glued into place so it can go into a better looking shell one of these days (Tibs by Bap hopefully).
Parts under $2ea: Plexiglass, Magnets, Wire, Epoxy, 1A charge board, 510 center spring pin
Parts over $2: DNA30, 6AH battery, FD 510 connector
Not a looker but it's been working great and fits a hand nicely.

Door is secured with 12 1mmx1mm magnets.

The shell is plexiglass heated with a hairdryer to bend around a piece of wood. I was thinking about 12Ah but the shell ended up a touch shallow so it got cut down to just fit one pack.

Harbor Freight 2 part epoxy holds the ends together and was used to form a cradle to hold dna but it is strapped vs. glued into place so it can go into a better looking shell one of these days (Tibs by Bap hopefully).

Parts under $2ea: Plexiglass, Magnets, Wire, Epoxy, 1A charge board, 510 center spring pin
Parts over $2: DNA30, 6AH battery, FD 510 connector
Not a looker but it's been working great and fits a hand nicely.