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Old 11-03-2011, 12:27 AM #17
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Default Re: I need help with my 1.9W 445! Please!

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Originally Posted by DTR View Post
Yes definitely get a quality cell as your current draw can go as high as 3A during the battery cycle and crapfire batteries just won't cut it. The AW's would be my first choice and Sanyo's if on a budget.

A single flexdrive set to 900mA would not need to be heatsinked but I have noticed the more you boost the hotter they get and I do recommend that you heatsink dual flexdrives set to 900mA each. This was one of my earlier builds but I am pretty sure I would have sinked the drivers at the very least back to back.
Yes I ordered a 18650 AW this afternoon

As for the heatsink unfortunately there is none currently but thats not a problem with me. How should I go about making/getting a heatsink this dual flex setup?


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Old 11-03-2011, 09:10 AM #18
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Default Re: I need help with my 1.9W 445! Please!

Seems that I was wrong about my theory Sorry everyone!

Well, now that we know it's the battery causing the issue, you do not need to make the heatsinks for the drivers. However, if you want to, it'll be a nice upgrade if you want to prolong the duty cycle of the laser.

What exactly is the cell you are using now? It looks alike those red cells I am using, which were pulled from laptop batteries.
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Old 11-03-2011, 10:45 AM #19
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Default Re: I need help with my 1.9W 445! Please!

Since im a nice guy and I have some nice links i'l share em' with a few nice people

You can get cheap AW cells from here: AW Li-Ion & IMR Batteries Sales Thread *USA* & international.

And Sanyo's from here:
Sanyo Genuine 3.7V 2600mAh 18650 battery_Battery_Battery&Charger_Electronics Wholesale online

Cheers

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Old 11-03-2011, 02:38 PM #20
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Default Re: I need help with my 1.9W 445! Please!

Quote:
Originally Posted by Eudaimonium View Post
Well, now that we know it's the battery causing the issue, you do not need to make the heatsinks for the drivers. However, if you want to, it'll be a nice upgrade if you want to prolong the duty cycle of the laser.

What exactly is the cell you are using now? It looks alike those red cells I am using, which were pulled from laptop batteries.
That is along the same line I suggested. If he was happy with the units performance before the battery issue why fix what is not broken and any time you disassemble something that is working there is a chance that it may not work when you get it back together.

He is using a Sanyo 2600mAh battery which I assume it may have been allowed to drain to low damaging it. They are great cells but since they are unprotected you have to be careful as they will not have a low voltage cutoff.
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Old 11-09-2011, 02:05 AM #21
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Default Re: I need help with my 1.9W 445! Please!

Thank you all for being so generous and helpful!

The wait continues... I ordered 4 of the 18650's so I have backups. Plus when it will be nice not to have to get more 18650's for future builds
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2 AAA pen style 405nm 75mW
Dan Efex MiniSabre V2 445nm 2.706W *9mm diode*
Aurora C6 445nm 1.8W
Aurora C6 445nm *yobresal* 1.05W
Ehgemus Grooved Alien Host 445nm 1.9W (Not quite working anymore?)

Star Trek Phaser *yobresal* 532nm 40mW
SKYLaser 532nm 300mW
CNI GLP 532nm 100mW
DIY Ehgemus Alien host 532nm 100mW
RHD Ehgemus Hexagon 635nm 602mw

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Nikon D5000
Nikon D700


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