What batteries do you use with your 6v direct drive?

[Kevin1322]

Specifically, for a SF 6P style light. I have an SST-50 drop by nailbender running direct drive. It works fine on primary CR123 x2, but when the battery power dies down so does the output, not to mention primaries get expensive.

Are there other options or am I stuck with primaries for now? What do you use?

 

[^^Nova^^]

Do you have a regulated or DD module? I assume you have the 3.6 - 6v one? If so an 18650 would be your best bet (if it will fit your host). Otherwise a 17670 MAY work as long as you draw less than 3.2A from it (probably regulated module only).

Cheers,
Nova

 

[Kevin1322]

Do you have a regulated or DD module? I assume you have the 3.6 - 6v one? If so an 18650 would be your best bet (if it will fit your host). Otherwise a 17670 MAY work as long as you draw less than 3.2A from it (probably regulated module only).

Cheers,
Nova

It is running direct drive, so an 18650 or 17650 does not push it to it's potential. That's the problem; they need a full 6v, but more could fry it.

 

[fivemega]

Specifically, for a SF 6P style light. I have an SST-50 drop by nailbender running direct drive. It works fine on primary CR123 x2, but when the battery power dies down so does the output, not to mention primaries get expensive.

Are there other options or am I stuck with primaries for now? What do you use?

[size=+1]This body and 3 NiZn AA batteries.

*Rechargeable
*Low Self Discharge
*4.8 Volt Operation
*High Current Capability[/size]

 

[Kevin1322]

[SIZE=+1]This body and 3 NiZn AA batteries.[/SIZE]

[SIZE=+1]*Rechargeable[/SIZE]
[SIZE=+1]*Low Self Discharge[/SIZE]
[SIZE=+1]*4.8 Volt Operation[/SIZE]
[SIZE=+1]*High Current Capability[/SIZE]

That's interesting. I have not come across this before. Thanks. Are you saying you have used this 4.8v solution to run a 6v direct drive light before? How did the performance compare at 4.8v verses when running it at a full six volts?

BTW, you really make some great stuff, though I've only had the pleasure of seeing them online. Some day I will own one of your creations though!

 

[fivemega]

I have a Direct Drive SST-90 drop-in by nailbender which pulls about 2.8 Amps in this set up using single 26500 and 4.5 Amps using 3 NiZn AAs

 

[kito109654]

Check this thread out:
http://www.candlepowerforums.com/vb/showthread.php?t=279302

I'm a noob but I'm thinking that direct drive would really take advantage of IMR cells. I have the nailbender SST-90 and I'm also trying to figure out what's gonna work best for me. I'm working with one of oveready's bored 6P's though.

 

[Kevin1322]

fivemega, thank you for the options, but what is the performance difference in the two, or are you saying that there isn't one?

kito109654, great find. I don't really like twisties, but...

 

[fivemega]

fivemega, thank you for the options, but what is the performance difference in the two, or are you saying that there isn't one?

Increasing from 2.8 Amps to 4.5 Amps is a great performance improvement but will increase heat too.
When you dealing with high power LED like SST-50/90, most important thing is heat sinking. The larger body, better heat sinking.

 

[Kevin1322]

Increasing from 2.8 Amps to 4.5 Amps is a great performance improvement but will increase heat too.
When you dealing with high power LED like SST-50/90, most important thing is heat sinking. The larger body, better heat sinking.

Got it. Thanks. :thumbsup: