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Old 02-14-2009, 11:50 PM #1
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Default Do batteries have to be round?

Hi all,

What a great new hobby! First ever surface-mount soldering was a success, (driver kit C/O Stonetek. Thank you!). Blown up a few PHR-803Ts, (China!), and a x16 Sony diode, (again, C/O Stonetek.), seen some cool stuff and seem to be getting on okay... Now, it's my first post so I'll get to the point!!

I'm aiming at building compact stuff so have been looking at mobile phone batteries. These seem to be a similar rating to the more common cylindrical type. I've now got an Ericsson with a reliable burning laser on the back and both seem to run quite happily together, (I've got photos if anyone's interested). There seem to be several advantages to this piggy-back approach but can anyone suggest why this would be a bad avenue to continue down? I've got lots to learn so any advice would be welcomed.

Loads of thanks,

Morgan



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Old 02-15-2009, 12:19 AM #2
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Default Re: Do batteries have to be round?

Yes -- *Batteries have to be round. *As the electrons circulate in the corriolus effect of our earth's magnetic field, they can clump in the corners causing cellular constipation. *When these electrons break loose in a gigantic fart, your LD is toast. *;D * *No POOP

Sorry -- I couldn't resist.........

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Old 02-15-2009, 12:25 AM #3
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Default Re: Do batteries have to be round?

Hehe... right, that must be it

Seriously though, it doesnt matter. Most lasers use round batteries because those are the easiest to use in pointer/flashlight formfactor housings, but there is no other reason.
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Old 02-15-2009, 12:28 AM #4
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Default Re: Do batteries have to be round?

Quote:
Originally Posted by Hemlock Mike
Yes -- *Batteries have to be round. *As the electrons circulate in the corriolus effect of our earth's magnetic field, they can clump in the corners causing cellular constipation. *When these electrons break loose in a gigantic fart, your LD is toast. *;D * *No POOP

Sorry -- I couldn't resist.........

Mike
I think hes trying to say no, it's fine. ;D

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Old 02-15-2009, 12:31 AM #5
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Default Re: Do batteries have to be round?

I see, so theoretically a spherical battery would solve all our problems? Where would the contacts go? :-/

I couldn't resist either...

Thanks Mike, it was more of a rhetorical question. Did I upset or bring a smile? It was a smile right? ;D

(Man, I hope Mike was joking or I just looked like a real idiot!!! Hey, I'm new, don't pick on me yet!)

Morgan
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Old 02-15-2009, 12:34 AM #6
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Default Re: Do batteries have to be round?

Sarcasim ??? * NOOOOOOO *that was to be funny in a scientific way *;D

No slam against the question -- scientific questions sometimes need a funny answer. * By the way -- open a 9 volt battery -- the cells have curved corners *

Seriously now -- When I make a pointer or portable, my lathe makes round holes for cells. It is much more difficult to machine square or rectangular housings. Note also that the housings, Aixiz etc, are also round. Labbies are different and flat surfaces are best.

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Old 02-15-2009, 12:44 AM #7
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Default Re: Do batteries have to be round?

Thanks all,

I'm gonna have to be on my guard with you lot, eh! ;D

This was kinda serious. I like the packaging of the batteries and I'm working on building a spirograph projector, (inspired by Roger's mini projector), to hook up with an MP3 player or mobile phone. The end game is mini-mobile disco phone. The box should be a tidy 60x35x15mm.

The advantages, as I see them, are that you can charge your laser when you charge the phone; you have a handy power reading on the phone so you'd know if your diode is unwell or battery is dead; and you could call someone when you've inadvertently scorched your retina! ;D

Bingo-bango, the disco or Eye-Phone, as I like to call it!

Morgan.
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Old 02-15-2009, 02:25 AM #8
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Default Re: Do batteries have to be round?

In general, batteries come in cylindrical containers. You can also get polymer lithium batteries which are flat.
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Old 02-15-2009, 09:50 PM #9
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Default Re: Do batteries have to be round?

Thanks 691175002. Most of the mobile-phone batteries I've been looking at, (we've all got old mobiles knocking about somewhere), have been the polymer Li-ion type so I thought they were a good scavenge. Most seem, "rated", at 3.6-3.7 volts, 900-950maH. Did some digging... , found vids of catastrophic failures due to overcharging and thought, the phone charges them fine, I'm not using it... Why not hack it? I just wanted to make sure I wasn't gonna do damage, (to myself or my precious!). Will post my Ericsson piggy-back when I'm allowed.

Love, peace and cheese,

M
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" ... Lasing on a sunny afternoon." The Kinks.

"Lasing on a Sunday Afternoon." Queen.

" Lase-y Sunday afternoon, I've got no mind to worry... " Small Faces.

"... Yes. It died during the night... So I cooked it! It was very nice." My Dad

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Old 02-17-2009, 10:32 PM #10
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Default Re: Do batteries have to be round?

No, when I open a (the right) 9V Battery, I get cells for my first ever Laser Pointer, which has something like 680nm/5mW and costed more than 70,- in 1990 or 1992. This thing uses AAAA battereis, which are found in some alkaline 9V.
For the sarcasm: Its good, much better then in laserfreak.net, where some guy canceled his account because of a quarrel about a nice joke :-( They are just too serious - where stays the fun?
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Old 02-18-2009, 04:24 PM #11
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Default Re: Do batteries have to be round?

Quote:
Originally Posted by Morgan
I see, so theoretically a spherical battery would solve all our problems? Where would the contacts go? :-/
On the inside, obviously! ;D
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Old 02-25-2009, 09:28 AM #12
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Default Re: Do batteries have to be round?

it could be possible for the use of an adapter...
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