Where to buy high current springs?

[Zeebit]

Anyone know where to buy high current springs that can handle at least 10A? If I could get on from China/HK that'd be great so I can save on shipping costs. I'm cheap.

 

[ryansoh3]

There's a feeler thread for beryllium copper springs on BLF, but I'm not sure if the company's responding.

Feeler thread for Beryllium Springs | BudgetLightForum.com

 

[andrewb]

I've purchased and used these before, and they've worked well.

10 pieces of Gold-plating Strong Switch Spring For High Current_Switch_Torch Components_Electronics Wholesale online

(They have others as well, just search the site for 'spring'.)

-Andy

 

[ARG]

What are you building? :eg:

 

[Zeebit]

ARG, don't get your hopes high. :na:

I'm building a battery holder for my RC. It's just a toy grade truck but it is very current hungry. I'm gonna be using four Samsung INR18650-20R/20Q in a 2S2P config.

I need springs!

 

[ryansoh3]

If you can't find anything decent, you can add copper braid to both ends to support the high current.

 

[Zeebit]

Hmm. Nice idea! I have a lot of 3mm desoldering wick here that I could use. Thanks for the tip.


I think the motor draws around 15-20A or even more. I can't really test it because my multimeter maxes out.

 

[ryansoh3]

No problem mate, good luck!

 

[Zeebit]

I'm gonna go ahead and order those ordinary springs from FT and hope it doesn't desolder itself.

 

[ryansoh3]

Here's some thicker springs:

Gold/Silver plated springs for drivers and switches (5 pcs) [Gold/Silver plated springs] - $0.99 : Led Flashlight-International Outdoor Store

Beware, untracked shipping is horrifically slow from this site.

 

[Zeebit]

Thanks for the link. I'll get the thickest spring and solder on a length of copper braid to ensure it can handke at least 10A.