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Old 01-17-2011, 05:25 PM #1
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Default does someone use 1.6volt POWERGENIX NiZn aa/aaa batteries?

hello boys....
i noticed that there are rechargeable batteries that can have 1.6 volt..... and that should be PERFEFT for those wnat to use the laser pointer without to loose power from 1.5v to 1.2 volt...

i think that the laser can handle MAX power for so much time with these batteries.... does someone use them?

if i will buy an optotronics 150 pen ... i would surely buy these batteries.. i don't want to loose power from my purchase.....


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Old 01-17-2011, 06:03 PM #2
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Default Re: does someone use 1.6volt POWERGENIX NiZn aa/aaa batteries?

I don't know that batteries but.. interesting... how much mAh they provide, and where you bought they?
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Old 01-17-2011, 06:14 PM #3
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Default Re: does someone use 1.6volt POWERGENIX NiZn aa/aaa batteries?

Amazon.com: PowerGenix ZR-PGX1HRAA-4B 1 Hour Quick Charger with 4 AA 1.6v NiZn Rechargeable Batteries: Electronics

Those are AAs

Charger will charge 1,2,3,or 4 AA NiZN batteries or 1 or 2 AAA NiZN batteries independently

Seems to sound good

Last edited by joeyss; 01-17-2011 at 06:15 PM. Reason: info on charger
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Old 01-17-2011, 06:16 PM #4
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Default Re: does someone use 1.6volt POWERGENIX NiZn aa/aaa batteries?

hmmm.. I still have my doubts. why I see "PowerGenix ZRPGX-AA8 AA 1.6v 2500 mWh ZiNc High-Voltage Rechargeable Batteries -8 Pack (Green)"? mili-watt-hour? Don't blame me, but I'm skeptic. Damn I can buy from amazon
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Old 01-17-2011, 06:20 PM #5
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Default Re: does someone use 1.6volt POWERGENIX NiZn aa/aaa batteries?

Man I was just looking at the reviews a bit more and well it seems they have rapid discharge issues stemming from quality control. See for yourself

Amazon.com: Customer Reviews: PowerGenix ZR-PGX1HRAA-4B 1 Hour Quick Charger with 4 AA 1.6v NiZn Rechargeable Batteries


That COULD be bad for a laser diode. I'd stick to buying packs of 1.5 non rechargeables if you want more power.
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Old 01-17-2011, 06:22 PM #6
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Default Re: does someone use 1.6volt POWERGENIX NiZn aa/aaa batteries?

Quote:
1.6v 2500 mWh ..... mili-watt-hour? Don't blame me, but I'm skeptic.
You can always do mWh/V to get mAh...
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Old 01-17-2011, 06:26 PM #7
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Default Re: does someone use 1.6volt POWERGENIX NiZn aa/aaa batteries?

well thats not the matter now..

I've seen someone that solved the 1.5v to 1.2v problem..
the procedure was:

test your laser with a thermometer and 1.5v batt output (eg 100mW unfiltered @ 25ºc)
open it and turn all the pot down (to 0 current flow)
turn it on @ 2.4v (two 1.2v batt) and turn the pot up until the output is equal to the first step test (eg 100mW unfiltered @ 25ºc).

after this, you just can't insert 1.5v batts that you will fry the laser. I've read this somewhere but didn't tested as I don't have an LPM, but it could work



@anselm
1600mAh for a AA battery? that what I'm talking about. I have china brand AAA batteries that can handle 500mA draw for 100~108 minutes.
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Old 01-17-2011, 06:29 PM #8
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Default Re: does someone use 1.6volt POWERGENIX NiZn aa/aaa batteries?

Don't do it the current will shorten diode life drastically . You can use one 3.0 volt like I do in my AA 50mw green laser. it gives it a max peak of 3.5 volts. Just find the right battery size and use copper wire. Make sure it's 3.0 and not 3.7 unless you know your laser can handle more.

EDIT: for example something that uses 2 AAs at 3.0V

should work with one CR2 3V

Last edited by joeyss; 01-17-2011 at 06:32 PM. Reason: Added info
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Old 01-17-2011, 08:02 PM #9
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Default Re: does someone use 1.6volt POWERGENIX NiZn aa/aaa batteries?

^Alkaline AAs start out at 1.6V anyway, sir. The driver supplies constant current.
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Old 01-17-2011, 08:05 PM #10
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Default Re: does someone use 1.6volt POWERGENIX NiZn aa/aaa batteries?

I'm aware of that. Also those 1.6 zinc batteries start at 1.85V. Seems like they'd be ideal for lasers , but they have horrible quality issues and a very short life.
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Old 01-18-2011, 12:00 PM #11
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Default Re: does someone use 1.6volt POWERGENIX NiZn aa/aaa batteries?

If you're so concerned about voltage levels, why don't you just use 10440s? 4.2-3.6V in a AAA package. If you're concerned about losing voltage from 1.5V, just use Alkalines, as they maintain most of their voltage through their entire life except at the very end.
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Old 01-18-2011, 03:22 PM #12
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Default Re: does someone use 1.6volt POWERGENIX NiZn aa/aaa batteries?

^You have alkalines confused with NiMH. Alkalines' voltage drops quite a bit with use.
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Old 01-18-2011, 04:23 PM #13
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Default Re: does someone use 1.6volt POWERGENIX NiZn aa/aaa batteries?

cyparagon is TRUE. alkalines batteries keep high voltage just initially... until 70% i think... then rapidly drops at voltage similar to a nimh...

i poned this thread because if someone would buy an high powered PEN laser.... using 2 nimh yo uare losing maybe 20/30% of power..... and you know that ALL online shop test the lasers with brand new alkalines. so if you buy a 150mw pen.. tested 158mw.... with nimh you could have only 140...130mw....
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Old 01-18-2011, 05:11 PM #14
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Default Re: does someone use 1.6volt POWERGENIX NiZn aa/aaa batteries?

Just use the appropriate lithium battery size and only one. It's good fix and you get more power since my laser seems brighter at 3.5v compared to fresh alkalines that give it 3v.
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Old 01-19-2011, 11:58 PM #15
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Default Re: does someone use 1.6volt POWERGENIX NiZn aa/aaa batteries?

Alkaline batteries really have shitty discharge curves. They do start out at 1.5 volts, but drop to 1.0 after discharing less than half their capacity at a bit of current (the few 100 mA laser pointers take count as a more than fair bit of current for AAA's).

As far as NiZn batteries go: the idea is a century old, but practical problems have always hindered their real world application. There seems to have been some recent development on that, but i won't say anything definitive until i use some myself. Predictions are that discharge curves would be fairly straight, like those of NiCD/NiMH cells.
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Old 11-30-2011, 01:56 AM #16
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Default Re: does someone use 1.6volt POWERGENIX NiZn aa/aaa batteries?

I saw these about a year ago and finally saw some in stores not too long after. Specifically, Big Lots discount store had 4 packs for around $5 so I bought three of them. They are rated as more mah than the equivalent NiMh AA's at 1.2v and my experiences with them seem to be consistent with that. They do drop off fast though once their juice is used up.
However, one thing that I have noticed, especially with digital devices, is that NiMh and NiCd batteries - due to their 1.2v power - will tend to 'fail' to power a digital device long before they are fully discharged as the voltage tends to drop off a bit in my experience as they discharge and some digital devices will not work below a given minimum. A minimum that is already closely approached due to the lower voltage of those cells.
NiZn are pushing .1 volt more so I haven't even bothered testing to see if their voltage drops off - they last FAR longer in my digital stuff and tend to give far more umph to the analog devices such as flashlights or anything with an audio speaker or transmitter.
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