battery holder parts where to find

mctrivia

I want to make my own battery holder. Anyone know where I can get the metal parts cheap.

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Unknown

For what kind of battery?

I found some cheap battery holders and I'm starting to think:

http://www.parts-express.com/wizards/searchResults.cfm?srchExt=CAT&srchCat=64&utm_source=google&utm_medium=cpc&utm_campaign=G+-+RKG+Keywords+10-01-07+(Search)&utm_group=30749305:+Hobby/Project+WC&utm_term=battery+holders

You should probably buy a mess of these, Mctrivia and sell them at a profit like all of the other sites do.

mctrivia

AA bateries. I could buy pre made packs like that and rip the metal out of I have to but I would prefer to buy just the metal if I can. I want to manufacture a project box with the battery compartment built in.

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Phil Pilgrim (PhiPi)

Search for "Keystone" on DigiKey, then look under "Battery Accessories".

-Phil

mctrivia

Thanks that is exactly what I was looking for.

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Unknown

Phil,

While we are talking about battery parts, do you know where I can find this 9V battery holder with switch & 2.1mm plug instead of having to pay $4 to one vender:

http://www.adafruit.com/index.php?main_page=product_info&cPath=17_22&products_id=67

Thanks,

Chuck

mctrivia

I could make the case but $4 is a good price.

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lardom

@Mctrivia, I need your expertise. I want·combine 4 AA's· and a ULN2803 in a single enclosure. I attached a picture. The controller·connects to a stepper through a rj-11 jack. I will trim the perf board to make things as compact as possible.

@Phil Pilgrim, as you can see I've got the black oxide machine screws. I had to order the terminal blocks from Gadget Gangster.



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Post Edited (lardom) : 6/21/2010 3:51:55 PM GMT

mctrivia

i think you forgot the pic.

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lardom

I didn't notice that I had exceeded the file size before I submitted it. I edited my previous reply.

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mctrivia

If all you need is a box that will contain the batteries and that pcb I can make you one. If you don't need the plastic look up the pcb mount battery terminals.

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lardom

Thank you. I know you do custom stuff. I've visited your website several times which I will do again for the details. I hope it's a repeatable solution. I·want to make a number of these machines for other people.

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mctrivia

i do not yet have the custom plastic parts service up on my site. I will provide free quotes to anyone that asks.

For large quantities it is cheapest to find a company that will do injection molding. You will pay a large setup fee for the molds but a very low cost per unit.

I charge no setup fee but it takes a fairly long time for me to build stuff(the custom boxs for rays LCD screens take 3.5 hours) so the cost per unit is higher. Depending on accuracy needed and size my cost per unit starts at $10 each. I could build you device box with built in battery box for $15. You may be able to find an off the shelf box that may do for less.

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WBA Consulting

If you are looking for anything of volume, I have ~5k of each of these sitting in my garage. I haven't done anything with them yet due to the cost of molding plastics, plus not having a specific design that can make use of them to justify the molding. I do have some sample cases

Positive Pole w/Tab Battery Contact
search.digikey.com/scripts/DkSearch/dksus.dll?Cat=393339&k=5226K-ND

Negative with Coil&Tab Battery Contact
search.digikey.com/scripts/DkSearch/dksus.dll?Cat=393339&k=5204K-ND

Third pic is of the case they were used in

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Andrew Williams
WBA Consulting
PowerTwig Dual Output Power Supply Module
My Prop projects: Reverse Geo-Cache Box, Custom Metronome, Micro Plunge Logger

mctrivia

WBA can I get some of those off you? Those are the parts I was planning to buy off digikey. might as well give you the money if you don't need.

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Lots of propeller based products in stock at affordable prices.

WBA Consulting

Sure, sending you a PM.

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Andrew Williams
WBA Consulting
PowerTwig Dual Output Power Supply Module
My Prop projects: Reverse Geo-Cache Box, Custom Metronome, Micro Plunge Logger

lardom

I attached a pic of the BS2 version of my machine. The Prop version will be a lot more compact but placement of a small enclosure for the ULN2803, batteries and an RJ11 connector will be the same. BTW I also made the foam-filled case for which my wife deserves a lot of credit. Anyway, what you don't see is that I have to unscrew the project box from the bottom of the linear slider to replace the 9V cell...a total of·four screws and two bolts.·The motor·is powered by a 12V lead acid battery which I will eliminate for·the propeller·version. I'm looking forward to a Mctrivia solution!

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mctrivia

how much space does your board and connectors take up? where do you have the battery located? can you give me a sketch(either 2d in paint or scanned paper or 3d in something like google sketchup)? of what you need?

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mctrivia

Will this do? quiet a few variables(A to J). Lid is H thick. screws in over electronics and has snap in battery lid. All values need to be in mm(Inches * 25.4). There is a 2x4mm cut going between the battery compartment and the electronics.

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Post Edited (mctrivia) : 6/22/2010 10:51:35 PM GMT

lardom

That is what I had in mind! I have to go to work but I will figure my requirement for 'A' and 'G' and reply before the day is over.

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mctrivia

use these diagrams instead. they are less ambiguous.




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Post Edited (mctrivia) : 6/22/2010 10:51:14 PM GMT

mctrivia

b&f are same value. I will have to edit one of them out.

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lardom

A=31mm

B=66mm

G=30mm

E=30mm

'A' looks like the battery compartment. The perf board and the RJ11 connector will fit easily inside "E". I don't even need the standoffs indicated @ "K" and "L".

· I would leave the configuration of the battery compartment up to you. Your expertise would be better than what I could come up with. I especially like the idea of a battery lid. I will order two if the set-up for the second box is easier. (One is fine) I can complete my prototype with what I've seen and I've started ordering supplies for two machines.

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mctrivia

ok so J=0 to remove standoffs

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lardom

·J=0. I'm learning.

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mctrivia

lardom said...
I would leave the configuration of the battery compartment up to you. Your expertise would be better than what I could come up with.

this box was designed with a 9v battery in mind where you have a connector on the end of a wire

search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=BS12I-HD-24AWG-ND

no special config needed. AA batteries require chambers for the individual batteries with connectors screwed to the walls.

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