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Re: Where dafuq to buy batteries!! "Exclamation" "Exclamation" "Exclamation" The X-Drive does require two lithium cells. I use the same 9mm 445 diode with a boost driver ( like X-Boost) and use a single 18650 cell. LarryDFW

Re: Where dafuq to buy batteries!! "Exclamation" "Exclamation" "Exclamation" Two 18350 cells have much less capacity . . . than one 18650 cell. Two 700mah = 1400 mah x V = power vs. One 3200mah LG cell = 3200mah x V = power Each requires a driver for ~85% efficiency. LarryDFW

I have the NCR18650PF Panny cells. The LG cell is a different LG hi-output current cell with more capacity. It has a higher voltage output, at the 6 amp current draw you are looking for. And it will maintain that level longer. LarryDFW

The new leaders for high current drain #18650 cells . . . are new Nickel/Manganese chemistry. Panasonic has their 10 amp current drain cells @ true 2900mah (4.2 VDC charging) (Link Below) LG has an even better cell, but it requires a 4.35 VDC charger. I have both of these cells @ $11.95 ppd...

I have added a analyzing charger that checks cell quality for $36.95. It charges @ 1 amp per channel. The I2 is only 500 ma per channel. http://laserpointerforums.com/f67/charger-analyses-cell-quality-90462.html LarryDFW

No, the 12 VDC power is only a fraction of the 500 Watt total. The supply should have an amp rating for the 12 VDC portion. LarryDFW

I have recycled many laptop packs. Just a couple of precautions with laptop battery packs: 1. Used packs will usually be 3-4 years old before they are available. Lithium cells usually have a life of ~ 5 years with charging cycles. These older designs will usually have cell capacities of...

Looked at your instructable. Good job. Liked the HD Rack & Pinion. Glad you put a fan on it, because the smoke will end up on the laser lens if you don't. LarryDFW

New Hi-Current Cell from Panasonic . . . 10 Amps & 3200mah . . . LarryDFW

At a power level of 300mw, it is quite safe as long as you have a reasonable heat sink on the LD. My 445 LD operates @ 600mw in a direct drive configuration with a 4.35 VDC lithium cell. http://laserpointerforums.com/f65/direct-drive-445-host-52918.html LarryDFW

The spring is indeed, the positive contact for the battery ( or power supply). Negative battery is common with negative diode terminal. LarryDFW

From the resistance of the protection circuits in the cells I have seen . . . that would add ~50 milliohms to the numbers above. LarryDFW

Walt; I have had the same problem looking for a dual 18650 host. I solved it with a C8 host with extension tube. I think the C8 is an improvement for my usage. LarryDFW

Thanks for the Great work ! You have to shoot a few with the laser operating at very lowest level. It will show the actual laser emission point. It could be shot from above to protect the imager. LarryDFW

John1A; Forget the 200 mw LD. You need more power and reliability. I would look at the 9mm 445 LD from DTR (~$70) or the NDB7A75 for even higher power @ $210. With decent optics, they will be a good match. Properly designed PWM is fine for any 445 or 405nm LD. I am also looking at some...

Joed; Your welcome. How are the cells performing ? LarryDFW

If it is a good quality cell and it fits, then it should work. LarryDFW

The specs would seem to indicate a Panasonic cell. If so, @ $21, it is still too expensive for a 3400mah cell with a protection FET. LarryDFW

Just use this driver after removing two of the 4135 chips. Check the pinout, but it is for a red LD. http://laserpointerforums.com/f67/open-source-iron4d-driver-single-cell-diode-mits-driver-87677.html Be careful with the Red LD's they are sensitive to input surges. LarryDFW

Terry; It would be good to meet you. I work @ 1314 Viceroy Dr. in Dallas. It is off Hwy 183, just east of Irving. Hours are 9-5 M-F. If you wanted to pick up the 18650 cells, I would sell them for $10.95 each. Or I can ship them to you prepaid for $11.95 each @ 18650 Batteries & Chargers...