New guy blu ray build!!

[erinehart5001]

hey guys new to the site, thanks for the info. Just a couple of questions, my build consists of a dorcy flashlight shown below, rkcstr driver and a PHR-803t blu day diode. I've already fitted the driver in the flashlight with no problem, although it did take some time to figure out how to fit it in there because of how long it is. I did play around with the driver and diode before i did anything but i used regular alkaline batteries because im waiting on my 10440's from deals extreme. My question is that im only measuring 50ma max using 4 AA energizers. Does normal batteries just not produce enough ma to make this diode run at 100 or even 150ma? My last question is this host uses 3 AAA, from my understanding is that three 10440's will be too much power for the rkcstr driver, if this is true can i use two 10440's and a regular alkaline AAA? thanks for any info on this.

eric

 

[daguin]

hey guys new to the site, thanks for the info.   Just a couple of questions, my build consists of a dorcy flashlight shown below, rkcstr driver and a PHR-803t blu day diode.  I've already fitted the driver in the flashlight with no problem, although it did take some time to figure out how to fit it in there because of how long it is.  I did play around with the driver and diode before i did anything but i used regular alkaline batteries because im waiting on my 10440's from deals extreme.  My question is that im only measuring 50ma max using 4 AA energizers.  Does normal batteries just not produce enough ma to make this diode run at 100 or even 150ma? My last question is this host uses 3 AAA, from my understanding is that three 10440's will be too much power for the rkcstr driver, if this is true can i use two 10440's and a regular alkaline AAA?  thanks for any info on this.

eric

The four AA's is not enough voltage to get regulation from the driver. You need about 7.2V (5V for the diode and 2.2V for the driver). You cannot "mix' the battery types. However you can use two 10440's and a "dummy" in the third space. I usually just cut a bolt to the length of a battery to place in the slot as a dummy.

Peace,
dave

 

[pullbangdead]

If you're comfortable with it, you can remove one little piece from the rkcstr driver and make it ok to run with the 3x10440. The only piece limited to 12V is the reverse-protection MOSFET. The only time the MOSFET ever does anything is if you hook up the driver in reverse polarity, which is easily avoided if you're just careful. So you can take off the MOSFET, short across where it was, and as long as you never hook the driver or batteries up backwards, you can use 3x10440 and never have any trouble at all.

Or, use a jumper/dummy like Dave suggested. NEVER mix battery types like that, nothing good can coem of two alkalines in series with a rechargeable lithium battery. Also, be careful with the 10440s, they aren't protected, so make sure you never drain them too low. Easy to avoid, just something to be aware of.

 

[erinehart5001]

thanks again guys. So is it possible to mix the ultra fires with a lower voltage lithium battery like the AAA e2's?

Thanks again
Eric

 

[Glaserfan]

As a rule, do not mix any different types of battery...PERIOD . Different types of battery will discharge at different rates when used together, causing a whole slew of problems.

 

[Zom-B]

It's better to use a dummy instead of the third battery. They will drain at the same rate anyway as it is a constant current regulator (as opposed to a boost driver) Since batteries have a limited number of charge/discharge cycles, you can have more fun with two batteries.

Also never mix batteries of the same type but with different history (different number of charge/discharge cycles and different wear due to high C discharge). If you use two batteries together from the start, try to always use them together until you dispose of them. If you use them separate once, then they can get unbalanced and may eventually leak or explode in the long run (as these are unprotected cells).

 

[erinehart5001]

thanks again for the info, its really helpfull. Lol unfortunetly im not too familiar with lithium batteries and dont really understand Protected? What does that mean?

thanks again
eric

 

[Zom-B]

Protected Lithium-Ion cells have a little PCB at the rear that shuts it down when the cell voltage drops below a threshold value.