Parallel Battery Adapter Holder 3x 18650

[gandymarsh]

Just curious to know if anyone has made a mod using this type of battery holder. Also any warnings and or pitfalls of using this type of holder.

I happen to have 4 aluminum tubes that are exactly 42mm ID.X 90mm long inside. They only have 1 end cap so I would need to find a way to cap off one end. An 1 1/2" PVC cap fits perfectly on the outside of the tube but looks kinda ugly. An 1 1/2 copper end cap is too small to fit on the tube.

Black Parallel Battery Adapter Holder 3X 18650 3 7V Case Box F Flashlight Torch | eBay

 

[JohnnyDill]

This is begging for somebody to make it into a mega-mod! I would update those marginal batt springs, though!

 

[gandymarsh]

Yeah, the springs look wimpy but could be changed out.

 

[gandymarsh]

Just thought I'd update this post in case anyone cares. I bought two of these battery holders off Ebay for about $12 total. I modified the connectors on one with .01 brass sheet. I think it came out fairly good.

 

[gandymarsh]

Well, after several setbacks and some rethinking, I finally got this one done. I'll post pics of the internals if anyone wants to see them.

 

[bjseggerman]

I would. Would be sweet to remove one battery and put in a squonk er. Where did you find the pipes and end caps?

 

[gandymarsh]

OK, here's a few pics.



Earlier in this thread I posted a pic of the modified battery holder. I decided that the bottom brass connectors were too thin to hold the batteries tight so I rebuilt them with thicker brass.

The switch is made from a telescoping antenna, some brass strip, 1/4" CPVC feed tubing and motherboard standoffs.

Oh yeah, the tube came from some speakers I got with a "multimedia computer" that never really worked very well. There were two caps on those but I lost one somehow. The one cap I have was used for the top. The speakers had a wide base that had an outer ring. I cut the outer ring off and sanded it smooth.