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sigalas
4.99mW Green Laser Toy
Joined: 27 Jan 2006
Posts: 8
Location: greece
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 Posted: 1/27/06, 10:46 AM Post subject: |
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GUYS IS THERE ANYTHING WRONG IF I USE RECHARCHABLE BATTERIE LITHIUM??? I THINK I WILL NOT SPEND TOO MUCH MONEY IN BATTERIES
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Athoul
Wicked Lasers God
Joined: 13 Sep 2005
Posts: 7488
Location: Canada
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Xauwoo
Nexus Laser
Joined: 05 Feb 2006
Posts: 103
Location: Canada, Kelowna BC
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| Posted: 2/22/06, 1:58 PM Post subject: |
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Man where did u get this Freak Unit from haha. Wanna get my hands on one of these lol.
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Athoul
Wicked Lasers God
Joined: 13 Sep 2005
Posts: 7488
Location: Canada
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| Posted: 2/22/06, 2:49 PM Post subject: |
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I ment to update the information, as I had bought 2 packs of Lithiums 2 weeks ago. The old ones had finally died out. Anyway after using both batteries and testing I seem to only get up to 218mW with an average of ~208mW, so I'm not sure maybe the Lithiums were outputting to much or something was whacked out giving 250mW. The other thing is I'm no longer am using a FieldMaster but back to the LaserCheck meter as the FieldMaster was borrowed at the time. There is still an increase in output with Lithiums over NiMH, but not as great as the original test indicated. Generally I only use NiMH batteries anyway, as the are reusable and I can recharge them as soon as I see the slightest decease in power.
I've updated my OP to indicate the new results, the readings with NiMH are consistent and unchanged.
It could also be temperature related, it's rather cold here at the moment! I'll update again if anything changes.
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msnyder
Wicked Lasers Master
Joined: 04 Apr 2006
Posts: 746
Location: Palo Alto, California, USA
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| Posted: 4/04/06, 6:56 PM Post subject: Battery Co |
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Hey guys,
The reason your high-powered lasers put out more power with Lithium batteries
than with rechargeable Nicad or NMH batteries is not because of voltage differences.
It's because the Lithium cells can supply more current than the rechargeables can.
That's why it didn't make that much difference on the lower-powered 10mW laser --
doesn't need as much current.
That's also probably why the Spyder series were designed to use cr123 lithium cells.
Think about it -- if all you need is 3 volts, why would you use two cr123 in parallel,
instead of two alkaline "C" cells in series? It's because the lithium cells can supply
more current than the alkalines. |
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ihavea55mw
Nexus Laser
Joined: 16 Apr 2006
Posts: 100
Location: sydney, australia
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| Posted: 5/02/06, 4:42 AM Post subject: |
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Hey Athoul is your freak laser a spyder or what can u send a picture in this post plz.  
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Athoul
Wicked Lasers God
Joined: 13 Sep 2005
Posts: 7488
Location: Canada
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mathyou9
Fusion Laser
Joined: 12 Aug 2006
Posts: 262
Movie(s): 1
Location: Salt Lake City
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| Posted: 8/13/06, 8:22 PM Post subject: Re: Batter |
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| msnyder wrote: |
Hey guys,
The reason your high-powered lasers put out more power with Lithium batteries
than with rechargeable Nicad or NMH batteries is not because of voltage differences.
It's because the Lithium cells can supply more current than the rechargeables can.
That's why it didn't make that much difference on the lower-powered 10mW laser --
doesn't need as much current.
That's also probably why the Spyder series were designed to use cr123 lithium cells.
Think about it -- if all you need is 3 volts, why would you use two cr123 in parallel,
instead of two alkaline "C" cells in series? It's because the lithium cells can supply
more current than the alkalines. |
One could get like twenty lithium cells; ten in parallel and the other ten in parallel; and then connect both parallel sets in series for 3 volts, but have a hell of a lot more amps than just two lithium cells in series. Of course, that seems excessive. How much amperage can these lasers take before it's too much? |
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windstrings
Elite Laser
Joined: 25 Aug 2005
Posts: 175
Location: Granbury Texas
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| Posted: 11/30/06, 12:30 AM Post subject: |
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So we see that lithium e2's deliver more current when they are new and fresh... the next question is what happens after say 30 minutes of runtime "not constant".
The lithiums don't appear to come with an amp/hour rating per se but only to brag that they have 7 times that of alkaline....
I guess my question is.... do the Lithium e2's have more "capacity" or mah than a 1000mah NiMh?
And we saw test with all batteries fresh, but like I said, what happens when they are 1/2 depleted? Both types of batteries are known for a very flat curve until almost dead.
I guess my point may be that... it may be better to be able to always have fresh Nimh to throw in because you always have a fresh set sitting in the charger or in your pocket ready to go, than use Lithiums till thier dead?.. They are too expensive to toss, unless they are fully depleted.
If I was going to a laser shootout or something I could see the practicality, but for the superior performance over Alkalines and the warm and fuzzy of knowing how much battery I have left "because I habitually top them off" makes me feel better using Nimh. With Lithium, its hard to tell just how much battery is left since there is no meter or timer on board... I see very little difference in burn time between the two.
I'm voting to stick with rechargables.
The idea of using one Lithium ion rechargable and a dummy cell is intriging, but not if my runtime is also cut in half.
Does anyone know if the capacity of one lithium ion 3.0V overshoots the capacity of "two" 1000mah NiMh?
I know the cr123's are usually 900mah, so comparable, but I don't know about this size.
Any thoughts? |
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RoadRunner
Wicked Lasers God
Joined: 05 Nov 2006
Posts: 2958
Picture(s): 1
Location: Scotland
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| Posted: 11/30/06, 12:47 AM Post subject: |
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Och !!! Sod me sideways !! I saw the title of this thread and thought it said 'battery compartment on a lasercheck'.
I was going to say, "There IS no battery compartment on a lasercheck. The battery is integral and cannot be removed without opening the case and voiding your warrantee...."
Then when I opened the topic, I saw what it actually said...
Futtocks ! I must be real tired... I'm going to bed !!
... after another cup of tea...
The RoadRunner..
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Spyderman
Elite Laser
Joined: 06 Jan 2008
Posts: 126
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| Posted: 1/24/08, 10:09 PM Post subject: |
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Im afraid i cant afford to use lithiums, Rechargables are so much cheaper for extended use.
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Smoky
Modified 10mW Greenie
Joined: 28 Jul 2008
Posts: 10
Location: USA
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| Posted: 7/29/08, 1:05 PM Post subject: |
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Hi folks
Noob here...all I have is a tracking number so far. Been in love with lasers since I was a child though. So happy to be getting into this new hobby!
What type of lithium batteries are you guys using, specifically? Brand, etc? What do you suggest? What's being used in these tests? Very interested.
Thx! |
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SteelTigers
Nexus Laser
Joined: 30 Mar 2007
Posts: 99
Picture(s): 39
Movie(s): 2
Location: USA
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| Posted: 7/29/08, 1:53 PM Post subject: |
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Hi smoky, nice to see you. I use Energizer's e2 lithiums for my greenies, the sustained current on those e2's are pretty stable for a longer period of time. You will have peak power a lot longer using these. The chemical composition used in lithiums arent really going to change from lithium to lithium, the mAh rating is what your looking for.
Example; if you get an e2 (AAA) with a 1250 mAh rating and another brand lithium with a 900 mAh rating the 1250 will last longer and produce longer over all peek over the 900. The e2 also has a max discharge of 1.5 amps continues/ 2.0 amps pulse and will retain 90% capacity after a 10 year shelf life.
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Smoky
Modified 10mW Greenie
Joined: 28 Jul 2008
Posts: 10
Location: USA
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| Posted: 7/29/08, 2:29 PM Post subject: |
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Thx for the info. Sounds like its all the same as the r/c hobby.
I already use e2 Lith's so I'll just stick with those. Good news! Thx! |
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SteelTigers
Nexus Laser
Joined: 30 Mar 2007
Posts: 99
Picture(s): 39
Movie(s): 2
Location: USA
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| Posted: 7/29/08, 2:35 PM Post subject: |
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| Smoky wrote: |
Thx for the info. Sounds like its all the same as the r/c hobby.
I already use e2 Lith's so I'll just stick with those. Good news! Thx! |
Yip, I am a rc pilot, I have several Helo's the T-Rex 450 SE's and a 600CF and mAh rating is very important for longer flight time, however more capacity means heavier cell. So I often trade mAh over weight and find a happy medium.
Cheers
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