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Athoul
Wicked Lasers God

Joined: 13 Sep 2005
Posts: 7781
Location: Canada

Posted: 12/28/05, 8:37 PM Post subject: Battery Co

Ok I thought I would make a thread for this even though I also posted this in response to another persons post elsewhere. Some people asked me to check IF there was any difference bewtween NiMH batteries and Lithium E2 Batteries. I did the test and used a Lasercheck meter from Coherent. This should show you that there is a difference in the 0.5V increase, but in most cases it is NOT that much. I used three Wicked lasers for this, A 75mW Phoenix, a Freak unit and a 10mW unit. Results: Lasercheck readout. First number is the min, second is the max. In all cases I tossed out any initial burst readings. Test was done over a 30 seconds period, after a 5 second warm up. Tail of the Tape. Phoenix 75mW NiMH 73.7 - 79.8 Avg=76.75mW Lithium 78.4 - 92.6 Avg=85.5mW Freak unit NiMH 193.2 - 210.6 Avg=201.9mW Lithium 198 - 218 Avg=208mW 10mW NiMH 9.2 - 13.6 Avg=11.4mW Lithium 12.6 - 18.9 Avg=15.75mW Initial burst readings are interesting though and awnsers many quesitons as to why you see a power change. Initial burst readings: Phoenix > 119.3mW Freak > ~263mW 10mW > 23.8mW Assuming a trend for most lasers, it would be most noticable in the 35-55mW units where a few mW will mean the difference between poping a balloon or not. Or the difference for some lasers to light a match or not. _________________ Cheers, Sean. Last edited by Athoul on 2/22/06, 2:48 PM; edited 7 times in total

Niccuh
Fusion Laser

Joined: 13 Dec 2005
Posts: 411

Posted: 12/28/05, 8:45 PM Post subject: Re: Batter

Athoul wrote:

Ok I thought I would make a thread for this even though I also posted this in response to another persons post elsewhere.

Some people asked me to check IF there was any difference bewtween NiMH batteries and Lithium E2 Batteries. I did the test and used a Lasercheck meter from Coherent. This should show you that there is a difference in the 0.5V increase, but in most cases it is NOT that much. I used three Wicked lasers for this, A 75mW Phoenix, a Freak unit and a 10mW unit.
Results

Lasercheck readout. First number is the min, second is the max.
In all cases I tossed out any initial burst readings. Test was done over a 30 seconds period, after a 5 second warm up.

Tail of the Tape.

Phoenix NiMH 73.7 - 79.8 Avg=76.75mW Lithium 78.4 - 92.6 Avg=85.5mW
Freak unit NiMH 193.2 - 210.6 Avg=201.9mW Lithium 243.2 - 268.7 Avg=255.95mW
10mW NiMH 9.2 - 13.6 Avg=11.4mW Lithium 12.6 - 18.9 Avg=15.75mW

Assuming a trend for most lasers, it would be most noticable in the 35-55mW units where a few mW will mean the difference between poping a balloon or not. Or the difference for some lasers to light a match or not.

thx Athoul, that's very helpful

chargerman
Wicked Lasers God

Joined: 08 Sep 2005
Posts: 1784
Movie(s): 2
Location: Big Horn Mountains, Wyoming

Posted: 12/28/05, 8:47 PM Post subject: WOW

Nice work Athoul........thats why I always use the lithiums, they seem to make my peticular lasers brighter and more powerful. Yes.....they are $$$ but hell.......I spent a lot on my lasers, I expect the best performance I can get from them. Cheers Dale _________________ Best Regards Chargerman Great divergence calculator http://www.pseudonomen.com/lasers/calculators/

2100
Nexus Laser

Joined: 25 Nov 2005
Posts: 98

Posted: 12/28/05, 9:13 PM Post subject: Re: WOW

Nice work Sean. I think i am going for the Panasonic Oxyrides! I guess for just checking out beam visibility and effects and general usage, NiMH is still the most cost effective. That 10% or so in power variance is not going to make a visible difference. I am very jealous about your freak unit! 286mw!!

Athoul
Wicked Lasers God

Joined: 13 Sep 2005
Posts: 7781
Location: Canada

Posted: 12/28/05, 9:20 PM Post subject:

Heh thats just the initial burst... that takes place for about 1 second or so, if that. _________________ Cheers, Sean.

Athoul
Wicked Lasers God

Joined: 13 Sep 2005
Posts: 7781
Location: Canada

Posted: 12/30/05, 8:01 AM Post subject:

An update to the battery tests. This time I did a 1 minute duration on each laser. Note for this test I used both NiMH batteries and Lithium E2's. To be completely fair, I made sure the lasers were 100% cooled down by letting them rest for an hour before trying with the next type of batteries. Again all lasers were on for 5 seconds before reading started to make sure there were no initial spikes in output. To aviod any confusion there are both min and max and average ratings noted for both the first 30 seconds and the next 30 seconds of the 60 second total run time. I have to also make a slight correction to my other post, those readings were taking from a Coherent laser power meter(Fieldmax), but not a lasercheck. I don't know if it really matters, but I thought it worth mentioning. The readings below are from a Coherent LaserCheck meter. One thing to note, fluctuations in power happened throughout the time frame, for example at the end of the 1 minute period the reading wasn't necessarily the lowest recorded. In each case except for the 10mW unit the output reading was higher then the minimum at the end of the 1 minute duration. The 10mW unit however did get weaker at a steady rate by the end of the minute, so in this case I let the laser run for an additional 10 seconds but it held the minimum power for the entire 10 seconds. In all cases there was power loss during the second half of the 1 minute duration and this is most likely due to heating. In the case of the Phoenix the power change was only noticable in that I was able to light a match within the first 30 seconds, but was unable to light a match after waiting 30 seconds with NiMH batteries. However I was still able to cut tape and pop a balloon and get the match to smoke. I had not tried this with the Lithiums as I ran out of matches :/ These units get very hot after 1 minute so I did not test them further, the 10mW unit gets slightly warm after 1 minute. Phoenix 75mW NiMH Batteries first 30 seconds: 71.9 - 79.6, avg=75.75mW final 30 seconds: 46.6 - 76.6, avg=61.6mW Reading at 30 seconds: 71.9mW Reading at 1 minute: 58.7mW Overall 30 second rating: 75.75mW Overall 1 minute rating: 63.1mW Lithum Batteries first 30 seconds: 77.5 - 90.8, avg=84.15mW final 30 seconds: 60.2 - 75.9, avg=68.05mW Reading at 30 seconds: 78.2mW Reading at 1 minute: 73.9mW Overall 30 second rating: 84.15mW Overall 1 minute rating: 68.05mW Freak Unit NiMH Batteries first 30 seconds: 193 - 208, avg=200.5mW final 30 seconds: 187 - 203, avg=195mW Reading at 30 seconds: 201mW Reading at 1 minute: 192mW Overall 30 second rating: 200.5mW Overall 1 minute rating: 197.5mW Lithium Batteries first 30 seconds: 237 - 264, avg=250.5mW final 30 seconds: 232 - 258, avg=245mW Reading at 30 seconds: 249mW Reading at 1 minute: 236mW Overall 30 second rating: 250.5mW Overall 1 minute rating: 248mW 10mW unit NiMH Batteries first 30 seconds: 11.2 - 16.3, avg=13.75mW final 30 seconds: 9.3 - 10.9, avg=10.1mW Reading at 30 seconds: 11.2mW Reading at 1 minute: 9.3mW Overall 30 second rating: 13.75mW Overall 1 minute rating: 12.8mW Lithium Batteries first 30 seconds: 13.1 - 21.4, avg=17.25mW final 30 seconds: 9.8 - 12.7, avg=10.25mW Reading at 30 seconds: 13.1mW Reading at 1 minute: 9.8mW Overall 30 second rating: 17.25mW Overall 1 minute rating: 15.6mW _________________ Cheers, Sean. Last edited by Athoul on 12/31/05, 7:23 PM; edited 1 time in total

NairB
Wicked Lasers God

Joined: 11 Dec 2005
Posts: 2010
Location: Scotland

Posted: 12/30/05, 12:32 PM Post subject:

Interesting Athoul...wonder if this sizable drop in mW affects the mid range lasers only. My Nexus does the same after constant us. Then back to its full power after an hours rest!! _________________ Beam divergence formula: ((dot size in mm) - (beam diameter at aperture in mm)) / (distance in meter) = mRad of your unit. NairBs Logitech Webcam is OFF AIR AGAIN(Viewing Size 320x240).... StreetCam1 If You Want a Userbar Like The Above, Click Here & Check Out King Ks Laser Userbar Website!

Athoul
Wicked Lasers God

Joined: 13 Sep 2005
Posts: 7781
Location: Canada

Posted: 12/30/05, 4:56 PM Post subject:

It seems to affect them all, the reason the higher unit ended up only a couple mW in difference is because the numbers were larger and thus the 10-13mW drop wasn't as much of a factor. In the low powered unit(comparitivly), the difference is the largest. The 17mW to 10mW in this case is nearly a 50% average power drop even though in this case the laser is still performing perfectly because it is only rated <10mW. _________________ Cheers, Sean. Last edited by Athoul on 12/31/05, 6:45 PM; edited 1 time in total

Davidgojr
Wicked Lasers Master

Joined: 13 Oct 2005
Posts: 769
Location: USA

Posted: 12/31/05, 6:43 PM Post subject:

This is a very helpful post, it answers one of the most commonly asked questions around. I had tried something similar with the green diode test, however, I quickly found that this method was quite inaccurate. Perhaps we could make this a sticky? _________________ Click http://freewebs.com/photodavidgojr before buying to view photographs and learn about Wicked Lasers in action!

YAG_God
Nexus Laser

Joined: 25 Sep 2005
Posts: 119

Posted: 12/31/05, 6:46 PM Post subject:

Done.

Athoul
Wicked Lasers God

Joined: 13 Sep 2005
Posts: 7781
Location: Canada

Posted: 12/31/05, 6:56 PM Post subject:

If anyone wishes to add to this I can include their findings in my post...I figure the more data the better, with enough data this could be applied to a graph for a visible representation. Just an idea. _________________ Cheers, Sean.

EGP
Fusion Laser

Joined: 05 Aug 2005
Posts: 327
Picture(s): 111
Location: Denmark

Posted: 12/31/05, 8:35 PM Post subject:

Athoul, have to chime in with the others; very nice work indeed Was planning to do something like this myself once my laser power meter arrives (assuming it's working with my lasers), but you beat me to it.... Cheers - and Happy New Year! Erling _________________ Visit my photo gallery at Wicked Lasers

Athoul
Wicked Lasers God

Joined: 13 Sep 2005
Posts: 7781
Location: Canada

Posted: 1/01/06, 7:41 AM Post subject:

Thanks Please feel freee to still do your tsts if you like! I would be more then happy to include them with mine...the more data the better. _________________ Cheers, Sean.

Nexus
Wicked Lasers Master

Joined: 02 Jun 2005
Posts: 764

Posted: 1/02/06, 1:16 PM Post subject:

Interesting freak unit you got there, I'm assuming it must have been a Nexus purchased from Wicked Lasers about 6 months ago?

derratte
Wicked Lasers Master

Joined: 18 Oct 2005
Posts: 598

Posted: 1/02/06, 2:24 PM Post subject:

Yeah, I was wondering the same thing. Where did you get that freak high power laser from?

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