Getting back to the pics in the OP, I love the idea, but the holder appears to be overkill to this jackleg mechanic, engineer wannabe. [
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Suggestion for review & feedback:
00) Start with three inexpensive
plain old alkaline batteries, IIRC, these have a longer shelf life and longer low current duty cycle than the expensive
pink bunny variety . . .
01) use electrical tape to bind them together in the same config . . .
02) use electrical tape to "pressure wrap" the short inter-battery connections and long, color coded, leads in place . . . test . . .
03) wrap leads around pack for strain relief and secure with electrical tape so that the (twisted pair) leads project straight up from the side of the "top" battery as illustrated above . . . test . . .
04) wrap entire assembly in electrical tape to simplify the convoluted shape, maximizing volume/minimizing overall surface area . . .
05) do final testing . . .
06) hold the assembly by the leads and dip it into a can of "liquid rubber" tool grip or "liquid rubber" wire insulation to a depth of about an inch or so up the leads . . .
. . . either insulation material should be readily available at your local home improvement store, but the tool grip comes in pretty colors . . . [
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07) crimp connect the assembly leads to the connector's leads . . .
08) secure assembly however and wherever you choose with the leads (the assembly's Achilles' heel in terms of leakage) pointing straight up.
Doing it this way is
probably the least expensive way to do "leak-proof" insulated container battery packs for entire collections. Varying the battery combinations to suit each voltage requirement would be necessary, of course. The packs would be disposable, about as eco-friendly as I can imagine. Just cut 'em open to harvest the wires for re-cycling into another pack at the end of the alkaline cell's useful life.
No lead-free or any other kind of solder or soldering required!
If one of the cells fail/leak/burst/whatever, the elastic properties and the spare volume inherent in the "containment" design
should come into play and save the day.
Whatcha think? :?: