I was wondering if anyone tried to direct wire a 12v battery supply to the nanoflash. I am on a very limited budget and need more battery life. I see there is available a car adapter, but is it possible to strip down the wires with a hirose connector on one end and connect just the two "hot" pins to the battery, ignoring the other two? I need a battery that lasts for long hours on remote location, recording overnight in cold weather while I am not around (hence a fair-sized 12v battery). Perhaps that would not work, but I have this old useless battery lying around.....
Thanks for any help.

Yes, I have tried it but not with an 'old useless battery'. Make sure you have the correct polarity!

Thanks for the reply and I assumed it worked? Sorry for the confusion, but the old useless battery is what is providing my hirose connection and wires (that way I don't have to solder those fine little contacts).

Hi Brad,

Your assumption is correct - it works. If I have a device that comes with a dedicated power supply and lead as does the nanoFlash I usually fit the lead with a plug and socket. Having done that I can either plug the lead back into the original power source or any other suitable source fitted with the same socket. In the case of the nanoFlash this saves buying and soldering a Hirose connector.

Thanks for your help. Indeed, I splice together the wires from pins 1 & 2 and then 3 & 4 and hooked right to my battery. Works fine and now I have a huge power source available. Just wish I could do something this easy with my Ninja now.

I had a D-Tap to Hirose made up - very handy...

Hirose connectors are cheap (around $10-12) and pretty easy to solder--I'm not the best at the process but I have cables around that I made 20 years ago and they are holding up fine.

Convergent Design makes (http://www.bhphotovideo.com/c/search?atclk=Type_Cables&ci=7242&N=4028759524+4291527113+4153816866) Hirose to P-tap cables as well as Hirose to bare end cables, incidentally, at a very reasonable $70 and $50 respectively.

Just make sure you label them immediately. Remember, Sound Devices uses same connector, but with opposite polarity! Mixing them up could be seriously bad.