homemade battery sled?

[Pdizzle]

Im looking to do a dual 18650 sx350j in a hammond 1550p. Basically a very tight fit. Don't really want to wait for a 3d printed sled. What could you use to attach battery contacts to and still make the batteries removable?

 

[LobsterGoD]

measure it out and just attach the contacts with epoxy, or you can warm up a strip of plastic and press them into it.

 

[Pdizzle]

How would you support the plastic "sled" in the box so that it would hold up to the batteries being pushed in?

 

[thetrucker]

If you epoxy the plastic battery sled into the mod it should hold if enginerred rite---hahahah

 

[DaveSignal]

or you could just mount battery contacts with no sled.

 

[Pdizzle]

If I went they route what is something good to use to line the inside of the box with?

 

[batteredwombat]

Mabey krylon true seal a rubberized spray, or liquid electrical tape. Had a question along the lines of OP question, does the negative battery spring need to be insulated or can you solder directly to the metal base?

 

[VapingBad]

I use PCB board and solder a good spring (ProVari 3 last time, even a flat spring) to the -ve side, you can use sugru behind if you need to stand off from the case.

In this pic a the pcb is the width of the case with the 510 bolting straight to it under some sugru, -ve at the top as I would rather that it vented away from my face if that ever happened.

This pick shows reverse battery protection in a CHana box

 

[batteredwombat]

Nice, that is perfect.