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ok thanks. i found out the lense i use now is a 3 element one. nice beam but probably a lot of losses along the way out.

well i finally got both my driver and my NDB7A75 in. This laser is very bright. even looking at the beam indirectly is very bright(that is why i wear glasses) My initial housing had a G2 lense which indeed produces a bar around 1.25 inch. i also got a new lense(i think it is a G8) in from...

now that's good info. i rather buy a diode which can take a hit then one which can be killed easilly

you attached the wrong info i think. anyway, looking at those specs i notics that the 7A75 specifies 3.6 watts with an If of 2.3, at 3Amps it is probably doing more than 3.6 watts

question regarding wattage the NDB7A75 does 3.5 watts with 3amps and voltage around 4.7 the GH04C05B9G does 5 watts with 3.5amps and voltage around 4.8 even if the voltages are not 100% correct things do not add up can we say the sharp diode is more efficient(and thus creates less heat/amp)

according to the info it needs at least 2x 18650 to operate (5.8-12 volts input) they also advice not to use 3x 18650 because the driver can get out of control if one of the 18650's has a high resistance for portable usage i better go with 2x 18650's protected

thanks. those look like the sames ones but a lot cheaper. amazinly that i searched ebay but did not find those. thanks again for the help

ok. clear. so if i use a driver which can do 4.5 amps it will probably try to get that (and fry the diode) this is the driver i am talking about i need to buy my stuff from china since all the stuff from the usa has very high shipping rates can not post a link to aliexpress but if you search...

thanks but my worries are more on the voltage levels i did not measure but does a 5v buck driver give out exactly 5v. i have heared these drivers blow up when there is no load connected so i am a bit reluctant to measure it

Hello, i have a 5v buck driver(4.5amps max) for the NDB7A75, can it also power the GH04C05B9G i noticed the NDB7A75 uses around 4.3-4.7 volt to operate and the GH04C05B9G needs 4.8-5.6 volts i figur that the NDB7A75 is probably a bit overdriven bij the driver while the GH04C05B9G stays in...