16340 battery question

[offroadfreak8582]

Hey guys,

A quick question, i build a 16340 445nM and i have 8 ultrafire batts and one brandless battery so i am in kind of a dilemma..

Only the brandless and 1 of the 8 ultrafire batts work with the laser? Really weird i dont have a clue the 445 is running of 1 flexdrive i even put the current on the driver down to see is maybe a protection board from the batts kick in but still only those two work.. Also all contact points are good that is not the problem :thinking:

If you have a clue tell me

Should i get some AW batteries?

Greetings,,

 

[Blord]

Did you measure the internal resistance of the batteries ? I will give an indication how good the batteries are.

http://laserpointerforums.com/f67/h...es-how-measure-internal-resistance-57576.html

 

[offroadfreak8582]

Did you measure the internal resistance of the batteries ? I will give an indication how good the batteries are.

http://laserpointerforums.com/f67/h...es-how-measure-internal-resistance-57576.html

Nope didn't do that.. But there all new but maybe their quality is bad or something?

Would this problem be fixed with AW's? And what effect does internal resistance have on the driver?

Thanks blord!

Greetings,,

 

[Blord]

If the internal resistance is too high, the voltage of the battery will sag under load. So much that it failed to deliver the needed voltage to the driver.

Ultrafire batteries are "famous" for the bad quality. Some of them are even repacked USED batteries. Even you bought it new they aren't new in the factory.

I think the 16340 hasn't enough juice to power a 445nm with a Flexdrive.