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Old 06-28-2012, 03:44 AM #1
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Default Double battery holder help!

Hey y'all I am curious if a standard 2 "AA" battery holder would be fine to hold 2 18650 3.7V li-ion 300mAh batteries or would i need a different battery pack? Would there be a problem with using a standard pack from like radioshack or should i get somthing different? I saw these 2 on ebay.

1) 1 x 1S2P 3.7V 18650 Holder Case Battery w/ Li-ion PCM Protection Circuit Module | eBay

2) 1 x 2S1P 7.4V 18650 Holder with Battery Build-in PCM Protection Circuit Module | eBay

If my laser need 2 3.7V li-ion batteries then would i get the double pack that says 3.7V or 7.4V??? Kind of confused me.

Let me know guys!

Thanks!

-Brandon


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Old 06-29-2012, 03:52 AM #2
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Default Re: Double battery holder help!

Depends on the host, do a little research and reading. And no a AA holder won't work.
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Old 06-29-2012, 04:40 AM #3
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Default Re: Double battery holder help!

Well I just found out the hard way. An 18650 battery is huge compared to a AA. A special battery hold just for the 18650 will be needed. I have a thread going right now that show the size different between AA and 18650.
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Old 07-07-2012, 05:58 PM #4
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Default Re: Double battery holder help!

Ah okay! Yeah I just got my batteries in! And I don't have a holder for these big boys lol!
Thanks man

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Old 07-07-2012, 08:47 PM #5
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Default Re: Double battery holder help!

Do a search on Ebay, very cheap holder for couple bucks

Black Plastic Battery Storage Case Box Holder for 2 x 18650 with 6" Wire Leads | eBay
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Old 07-08-2012, 04:22 AM #6
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Default Re: Double battery holder help!

^Not good for high current applications. I've bought similar. They use 28awg wire and steel spring. Anything over half-amp or so and the voltage drop will be unacceptable. Get a more expensive one.
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